Precision Digital Corporation Helios PD2-6310 User manual

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
PRECISION DIGITAL CORPORATION
233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]
www.predig.com
•Large Display NEMA 4X, IP65 Wall Mounted Batch Controller
•Pulse, Open Collector, NPN, PNP, TTL, Switch Contact, Sine Wave (Coil), Square Wave Inputs
•Large Dual-Line 6-Digit Display, 1.8" (46 mm) Digits Readable up to 100 Feet (30 Meters) Away
•Isolated 5, 10 or 24 VDC Flowmeter Power Supply
•4 Relays with Interlocking Capability + Isolated 4-20 mA Output Options
•Free PC-Based, On-Board, MeterView Pro USB Programming Software
•SunBright Display Standard Feature; Great for Outdoor Applications
•K-Factor, Internal Scaling, or External Calibration
•Gate Function for Rate Display of Slow Pulse Rates
•Start / Pause / Stop, Change Batch Remote Capabilities
•Display Batch Total, Rate, Grand Total, Count or Preset
•Single or Multi-Stage Batch Control (Up to 8 Relays)
•Automatic Overrun Correction
•Automatic or Manual Batch Control
•Low or High Flow Alarms while Batching
•9 Digit Grand Total with Overflow Feature
•Count Up or Down, Independent for Batch & Grand Total
•Operating Temperature Range: -40 to 65°C (-40 to 149°F)
•Conformal Coated PCBs for Dust and Humidity Protection
•UL & C-UL Listed. E160849; 508 Industrial Control Equipment
•Input Power Options: 85-265 VAC / 90-265 VDC or 12-24 VDC / 12-24 VAC
•Programmable Display, Function Keys & Digital Input
•On-Board USB & RS-485 Serial Communications
•Modbus RTU Communication Protocol Standard
•5 Digital Inputs & 4 Digital Outputs Standard
•Password Protection
•Light / Horn & Button Accessory
•Control Station Accessory for Remote Operation
•3-Year Warranty
MeterView Pro
USB Install

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
2
Disclaimer
The information contained in this document is
subject to change without notice. Precision Digital
makes no representations or warranties with
respect to the contents hereof and specifically
disclaims any implied warranties of
merchantability or fitness for a particular purpose.
See Warranty Information and Terms &
Conditions on www.predig.com for complete
details.
•Read complete instructions prior to installation
and operation of the controller.
•Risk of electric shock or personal injury.
•This product is not recommended for life support
applications or applications where malfunctioning
could result in personal injury or property loss.
Anyone using this product for such applications
does so at his/her own risk. Precision Digital
Corporation shall not be held liable for damages
resulting from such improper use.
WARNING
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Limited Warranty
Precision Digital Corporation warrants this
product against defects in material or
workmanship for the specified period under
“Specifications” from the date of shipment from
the factory. Precision Digital’s liability under this
limited warranty shall not exceed the purchase
value, repair, or replacement of the defective unit.
See Warranty Information and Terms &
Conditions on www.predig.com for complete
details.
Registered Trademarks
All trademarks mentioned in this document are
the property of their respective owners.
© 2021 Precision Digital Corporation.
All rights reserved.
FREE MeterView Pro
Programming Software
The controller can be powered from the USB connection. When
using the USB connection, DO NOT apply AC or DC power to
the controller.
The easiest and quickest way to program your Helios
batch controller is to use the FREE MeterView Pro
programming software. This software is loaded into
the controller and connects and installs directly to
your PC with a USB cable. We recommend that the
first thing you do after taking the controller out of the
box is connect the Helios to your PC with the provided
USB cable –do not use a different cable. DO NOT
apply AC or DC power to the controller while your PC
is connected to the controller as it will disrupt the USB
connection. You don’t even have to apply an input
signal.
MeterView Pro programming software is intuitive, and
most customers can get their controller programmed
as they like without even looking in the manual.
Watch MeterView Pro Software Video at
www.predig.com/meterviewpro
In addition to programming, the software may be used
to perform many useful tasks:
•Start, Pause, Stop the batch
•Change preset & pre-close settings
•Reset total & grand total
•Test the relays functionality
•Monitor the batch process
•Datalogging using your PC
•Generate & save program files for later use
Once your controller is programmed the way you want
it, you can wire it up for your application per the
instructions in this manual and install it. If you find that
you need to make adjustments to the programming
after the controller is installed, you can use the
programming buttons and the instructions in this
manual to do so.

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
3
Table of Contents
Introduction..........................................................................................................6
Ordering Information...........................................................................................6
Specifications.......................................................................................................8
General.............................................................................................................8
Batch Controller Rate/Totalizer Display........................................................9
Pulse Input.....................................................................................................10
Relays.............................................................................................................10
USB Connection............................................................................................10
Isolated 4-20 mA Transmitter Output ..........................................................11
RS-485 Serial Communications ...................................................................11
Modbus®RTU Serial Communications........................................................11
Digital Input (F4)............................................................................................11
Digital Inputs & Outputs ...............................................................................11
MeterView Pro Software................................................................................11
Compliance Information....................................................................................12
Safety..............................................................................................................12
Safety Information .............................................................................................12
Installation..........................................................................................................12
Unpacking......................................................................................................12
Wall Mounting Instructions ..........................................................................13
Mounting Dimensions..................................................................................13
Conduit Holes Location...............................................................................13
Pipe Mounting Instructions ..........................................................................14
Installation Overview.....................................................................................15
MeterView Pro Software................................................................................15
MeterView Pro Installation...........................................................................15
Flowmeter Supply Voltage Selection (P+, P-).............................................16
Connections...................................................................................................17
Connectors Labeling ...................................................................................17
Power Connections.....................................................................................18
Pulse Signal Connections ...........................................................................18
Relay Connections......................................................................................18
Switching Inductive Loads...........................................................................19
RS-485 Connections...................................................................................19
RS-485 Multi-Drop Connection ...................................................................19
RS-485 Serial Converters ...........................................................................19
Digital I/O Connections................................................................................20
F4 Digital Input Connections.......................................................................21
4-20 mA Output Connections......................................................................21
Analog Output Transmitter Power Supply...................................................21
Remote Operation of Controller ..................................................................21
Interlock Relay Feature...............................................................................21
Setup and Programming...................................................................................22
Overview.........................................................................................................22
LED Status Indicators...................................................................................22
Programming Buttons...................................................................................23
Display Functions and Messages................................................................24
Main Menu......................................................................................................26
Setting Numeric Values ................................................................................26
Setting Up the Batch Controller (setup)......................................................27
Setting the Input Signal (Input)..................................................................28
Setting the Totalizer & Batch Control Features (total)..............................28
Setting the Input Units or Custom Tags (units).........................................28
Setting the Decimal Point (dEc pt).............................................................29
Programming the Batch Controller (prog)...................................................29
Setting the Display Parameter & Intensity (dsplay) ...................................32
Display Intensity (d-Inty)...........................................................................32

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
4
Setting the Relay Operation (relay)............................................................33
Relay Assignment (Assign)........................................................................34
Setting the Relay Action..............................................................................35
Setting Batch Control Relays ......................................................................35
Programming Alarm Set and Reset Points..................................................35
Setting Fail-Safe Operation.........................................................................35
Programming Time Delay............................................................................35
Automatic Batch Control Operation.............................................................36
Relay and Alarm Operation Diagrams.........................................................37
High Alarm Operation (Set >Reset)................................................................37
Low Alarm Operation (Set < Reset)............................................................37
High Alarm with Fail-Safe Operation (Set > Reset).....................................37
Low Alarm with Fail-Safe Operation (Set < Reset) .....................................37
Time Delay Operation .................................................................................38
Total Relay Sampling Operation .................................................................38
Relay Operation Details................................................................................39
Overview .....................................................................................................39
Relays Initialization......................................................................................39
Fail-Safe Operation.....................................................................................39
Front Panel LEDs........................................................................................39
Automatic Reset (Auto)...............................................................................39
Pump Alternation Control............................................................................39
Sample Relay Operation.............................................................................40
Setting Up the Interlock Relay (Force On) Feature.....................................40
Scaling the 4-20 mA Analog Output (Aout).................................................41
Reset Menu (reset).......................................................................................41
Manual Control Menu (Contrl).....................................................................41
Setting Up the Password (pass)...................................................................42
Protecting or Locking the Controller............................................................42
Grand Total Reset Password & Non-Resettable Total................................42
Making Changes to a Password Protected Controller.................................42
Disabling Password Protection....................................................................42
Controller Operation..........................................................................................43
Default Batch Control Operation..................................................................43
Batch Control Operation Example...............................................................43
Manual Batch Control ...................................................................................44
Manual Batch Control Operation.................................................................44
Additional Features .....................................................................................45
Automatic Batch Control..............................................................................45
Setup for Automatic Batch Control..............................................................45
Automatic Batch Control Operation.............................................................46
Setup with MeterView Pro.............................................................................47
Operate with MeterView Pro.........................................................................47
Advanced Setup & Programming.....................................................................48
Advanced Features Menu.............................................................................48
Advanced Features Menu & Display Messages..........................................48
Function Keys Operation.............................................................................49
Digital Inputs Operation...............................................................................49
Advanced Setup and Calibration.................................................................50
Maximum/Minimum Readings.....................................................................50
Rounding Feature (round)..........................................................................50
Modbus RTU Serial Communications (serial)..........................................50
Select Menu (SElEct).................................................................................51
Programmable Function Keys User Menu (user).......................................53
Troubleshooting.................................................................................................54
Diagnostics Menu (diag) ............................................................................54
Testing the Display LEDs............................................................................54
Determining Software Version.....................................................................54
Reset Controller to Factory Defaults...........................................................54
Factory Defaults & User Settings................................................................55
Troubleshooting Tips....................................................................................57

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
5
Table of Figures
Figure 1. Controller Mounting Holes Location................................................13
Figure 2. Controller Mounting Holes Dimensions ..........................................13
Figure 3. Controller Dimensions –Side View..................................................13
Figure 4. Controller Dimensions - Front View.................................................13
Figure 5. Conduit Holes Location –Bottom View...........................................13
Figure 6. Vertical Pipe Mount Assembly..........................................................14
Figure 7. Horizontal Pipe Mount Assembly.....................................................14
Figure 8. Flowmeter Supply Voltage Selection...............................................16
Figure 9. PD2-6310-6H2 / 7H2 Connectors Label............................................17
Figure 10. PD2-6310-6H7 / 7H7 Connectors Label..........................................17
Figure 11. Power Connections .........................................................................18
Figure 12. Flowmeter Powered by Internal Power Supply.............................18
Figure 13. Flowmeter Powered by External Supply........................................18
Figure 14. Self-Powered Magnetic Pickup Coil Flowmeter............................18
Figure 15. NPN open Collector Input ...............................................................18
Figure 16. PNP Sensor Powered by Internal Supply......................................18
Figure 17. Switch Input Connections...............................................................18
Figure 18. Relay Connections...........................................................................18
Figure 19. AC and DC Loads Protection..........................................................19
Figure 20. Low Voltage DC Loads Protection.................................................19
Figure 21. RS-485 Connection..........................................................................19
Figure 22. Five-Wire RS-485 Connections.......................................................20
Figure 23. Three-Wire RS-485 Multi-Drop Connections.................................20
Figure 24. Connections for RS-485 Connector to Serial Converter..............20
Figure 25. Three-Wire RS-485 Connection......................................................20
Figure 26. Digital Input and Output Connections...........................................20
Figure 27. F4 Digital Input Connections..........................................................21
Figure 28. 4-20 mA Output Connections .........................................................21
Figure 29. Analog Output Supply Powering Other Devices...........................21
Figure 30. Controller to PDA2364-MSBS Control Station Connection .........21
Figure 31. Interlock Connection.......................................................................21

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
6
Introduction
The Helios PD2-6310 is a multi-purpose, easy to use,
large-display pulse input batch controller ideal for
simplifying independent batch control operations
where local control is preferred to expensive plant
operation systems. It features large 1.8 inch
superluminous LED digits, which can be read in
sunlight from up to 100 feet away. It is housed in a
water-resistant, field mountable NEMA 4X/IP65 rated
enclosure for convenient indoor and outdoor
installation.
The batch operation buttons are located behind the
lower panel door and are not generally accessible
during operation. For that reason, we recommend the
use of the PDA2364-MSBS remote control station
which has four buttons to mimic the buttons behind
the panel.
The controller comes programmed for easy start,
pause, stop, and batch size (preset) changes. Display
line two can be programmed to display rate, grand
total, batch count, or preset by cycling the Stop (F3)
button. Digital inputs come standard.
Single and multi-stage batching is possible with up to
four on-board relays. Each batch control relay may
have a unique preclose amount when used for multi-
stage batching. Manual start batching is default, but
automatic batching with a restart after a programmed
time delay from the completion of the last batch is
also possible.
Overrun correction adjusts the closing of the batch
control relays to adjust for inaccuracies from batch to
batch. This increases accuracy over time as systems
wear out. The overrun correction feature is capable
of compensating for inaccuracies of up to 10% of the
programmed preset value.
The controller accepts pulse (e.g. ±40 mV to ±8 V),
square wave (0-5 V, 0-12 V, or 0-24 V), open
collector, NPN, PNP, TTL or switch contact signals.
Three of the programming buttons can be set for
custom operation.
A fully loaded PD2-6310 batch controller comes with
four SPDT relays, a 4 20 mA output, two 24 VDC
power supplies, five digital inputs and four digital
outputs, and RS-485 serial communications, making it
an excellent addition to any system.
Ordering Information
85-265 VAC Models
Model
Standard
Features
Options
Installed
PD2-6310-6H2
5 Digital Inputs,
4 Digital Outputs,
RS-485
Communications
2 relays
PD2-6310-6H7
4 relays
4-20 mA output
12-24 VDC Models
Model
Standard
Features
Options
Installed
PD2-6310-7H2
5 Digital Inputs,
4 Digital Outputs,
RS-485
Communications
2 relays
PD2-6310-7H7
4 relays
4-20 mA output
Accessories
Model
Description
PDA0004
Cable Gland
PDA7485-I
RS-232 to RS-485 isolated converter
PDA8485-I
USB to RS-485 isolated converter
PDAPLUG2
Plastic Conduit Plug
PDX6901
Snubber: 0.01 μF/470 Ω, 250 VAC
PDA2364 Control Station
Model
Description
PDA2364-MSBS
Menu, Start, Batch, and Stop
Buttons
Note: Control stations can be connected directly to the Helios
controller’s on-board digital inputs. See Remote Operation of
Controller on page 21 for details.

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
7
Light / Horn Accessories
Helios Controller Shown with MOD-PD2LHRB1 Red
Light / Horn and Button. Controller Sold Separately.
Model
Description
MOD-PD2LHRB1
Red Light / Horn and Button
Mounted and Wired to Helios(1)
MOD-PD2LHGB1
Green Light / Horn and Button
Mounted and Wired to Helios(1)
MOD-PD2LHYB1
Yellow Light / Horn and Button
Mounted and Wired to Helios(1)
MOD-PD2LHBB1
Blue Light / Horn and Button
Mounted and Wired to Helios(1)
MOD-PD2LHWB1
White Light / Horn and Button
Mounted and Wired to Helios(1)
MOD-PD2LH5CB1
Light / Horn with User Choice of
Red, Green, Yellow, Blue or White
Light, Button, Mounted and Wired
to Helios(1)
MOD-
PD2LH3CB1-RYG
Light / Horn with Red, Yellow,
Green Light Layers, Button,
Mounted and Wired to Helios(1)
Note:
1. Specify MOD-PD2LH model as a separate item on the order for the
Helios to order the Light / Horn & Button accessory installed and
wired. Controller is sold separately.
9 labels are provided for the button.
Pipe Mounting Kit
Helios Controller Shown mounted to pipe using
PDA6260 pipe mounting kit. See Pipe Mounting
Instructions on page 14 for details.
Model
Description
PDA6260
2" Pipe Mounting Kit for PD2
Signal Splitter & Conditioner Accessories
Model
Description
PD659-1MA-1MA
Signal Isolator with One 4-20 mA
Input and One 4-20 mA Output
PD659-1MA-2MA
Signal Splitter with One 4-20 mA
Input and Two 4-20 mA Outputs
PD659-1MA-1V
Signal Conditioner with One
4-20 mA Input and One 0-10 VDC
Output

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
8
Specifications
Except where noted all specifications apply to
operation at +25°C.
General
Display
Dual-line: 1.8" (46 mm) high, red LEDs
6 digits per line (-99999 to 999999), with
lead zero blanking
Display
Intensity
Eight user selectable intensity levels.
Default is six.
Display
Update Rate
5/second (200 ms)
LED Status
Indicators
See LED Status Indicators on page 22 for
details.
Overrange
Display flashes 999999
Underrange
Display flashes -99999
Default
Display
Assignment
Line 1 displays batch total. Line 2 displays
batch preset, and can be switched to show
grand total, or batch count with the STOP
key.
Custom
Display
Assignment
Display lines 1 and 2 may be assigned to
rate, total, grand total, batch count, preset,
set points, units (lower display only),
alternating R & T, R & GT, preset & rate,
max & min, or a Modbus display register.
Any rate/total/grand total display may be
programmed to alternate with a custom unit
or tag.
Alternating
Display
Displays alternate every 10 seconds when
display is selected, or the batch is paused.
Programming
Methods
Four programming buttons, digital inputs,
PC and MeterView Pro software, or
Modbus registers.
Recalibration
All ranges are calibrated at the factory.
Recalibration is recommended at least
every 12 months.
Max/Min
Display
Max/min readings reached by the process
are stored until reset by the user or until
power to the controller is cycled.
Rounding
Select 1, 2, 5, 10, 20, 50, or 100
(e.g. rounding = 10, value = 123.45,
display = 123.50).
Password
Three programmable passwords restrict
modification of programmed settings and
two prevent resetting the totals.
Pass 1: Allows use of function keys and
digital inputs
Pass 2: Allows use of function keys, digital
inputs and editing set/reset points
Pass 3: Restricts all programming, function
keys, and digital inputs.
Total Password: Prevents resetting the total
manually
Gtotal Password: Prevents resetting the
grand total manually
Non-Volatile
Memory
All programmed settings are stored in non-
volatile memory for a minimum of ten years
if power is lost.
Power
Options
85-265VAC50/60Hz;90-265VDC,20Wmax;
12-24 VDC, 12-24 VAC, 15 W max.
Powered over USB for configuration only.
Fuse
Required external fuse: UL Recognized,
5 A max, slow blow; up to 6 controllers may
share one 5 A fuse
Normal Mode
Rejection
Greater than 60 dB at 50/60 Hz
Isolation
4 kV input/output-to-power line
500 V input-to-output or output-to-P+ supply
Overvoltage
Category
Installation Overvoltage Category II:
Local level with smaller transient
overvoltages than Installation Overvoltage
Category III.
Environmental
Operating temperature range:
-40 to 65°C (-40 to 149°F)
Storage temperature range:
-40 to 85°C (-40 to 185°F)
Relative humidity:
0 to 90% non-condensing
Note: Printed circuit boards are conformally
coated.
Connections
Power, signal, relays, mA out: Removable
screw terminal blocks accept 12 to 22
AWG wire.
RS-485: Removable screw terminal block
accepts 16 to 30 AWG wire.
Digital I/O: Non-removable screw terminal
blocks accept 16 to 30 AWG wire.
Enclosure
UL Type 4X, IP65 rated. Polycarbonate &
glass blended plastic case, color: gray.
Includes four PG11 through-hole conduit
openings, with two factory installed PG11,
IP68, black nylon threaded hole plugs with
backing nuts.
Mounting
Wall Mounting:
Four (4) mounting holes provided for
mounting controller to wall. See Wall
Mounting Instructions on page 13 for
additional details.
Pipe Mounting:
Optional pipe mounting kit (PDA6260)
allows for pipe mounting. Sold separately.
See Pipe Mounting Instructions on page 14
for additional details.
Tightening
Torque
Power, signal, relays, mA out terminals:
5 lb-in (0.56 Nm)
Digital I/O and RS-485:
2.2 lb-in (0.25 Nm)
Overall
Dimensions
10.63" x 12.59" x 4.77"
(270 mm x 319.7 mm x 121.2 mm)
(W x H x D)
Weight
6.10 lbs (2.76 kg)
Warranty
3 years parts & labor. See Warranty
Information and Terms & Conditions on
www.predig.com for complete details.

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
9
Batch Controller Rate/Totalizer
Display
Rate Display
Indication
-99999 to 999999, lead zero blanking.
“R” LED illuminates while displaying rate.
Batch Total &
Grand Total
Display
0 to 999,999; automatic lead zero blanking.
“T” LED is illuminated while displaying batch
total. “GT” LEDs are illuminated while
displaying grand total. Up to 999,999 for
batch total/preset. Up to 999,999,999 with
grand total-overflow feature. “oF” is
displayed to the left of grand total overflow
and ▲ LED is illuminated.
Batch Total
Decimal Point
Up to five decimal places or none:
d.ddddd, d.dddd, d.ddd, d.dd, d.d, or dddddd
Total decimal point is independent of rate
decimal point.
Totalizer
Calculates total based on rate and field
programmable multiplier to display total in
engineering units. Time base must be
selected according to the time units in
which the rate is displayed.
Time Base
Second, minute, hour, or day
Batch Control
Mode
Automatic or manual batch control
Manual
Batch
The operator must press the START button
every time a new batch is started.
Press STOP to pause the batch and either
press START to resume or STOP to stop
the incomplete batch.
Automatic
Batch
Once the START button is pressed, the
batches will run automatically until the
STOP button is pressed twice. The time
delay between batches is entered during
the setup.
Batch Time
Delay
Programmable up to 999.9 seconds
This is the time delay between batches for
automatic batch control. Allow sufficient
time to put in place an empty container.
Batch Preset
The F2 key is assigned to the preset.
The preset value is the total volume to be
batched in each cycle.
Batch
Pre-Close
The pre-close value is equal to the volume
amount before reaching the preset value
(batch size).
Single or
Multi-Stage
Single Stage: Only relay 1 is used
Multi-Stage: Two or more relays are used
to control the batch with more precision;
this is done using multiple presets or using
the pre-close feature.
Multiple
Presets
Each relay de-energizes at its own preset
value.
Remote
Operation
Start / Stop / Batch Size buttons may be
operated remotely using the
PDA2364-MSBS control station
Start
The F1 key is assigned to START batch.
Press START to start a new batch in
manual mode or a set of batches in
automatic mode.
Pause / Stop
The F3 key is assigned to PAUSE / STOP.
Press F3 once to pause and press it again
to stop the batch process.
Automatic
Overrun
Correction
Adjusts the closing of the batch control
relays to compensate for inaccuracies from
batch to batch. The overrun correction
feature is capable of compensating for
inaccuracies of up to 1% of the
programmed preset value.
To achieve an accurate batch, the flow rate
must be slowed down, such that the total
most-right digit increments at a rate of less
than 10 counts/second. The use of a dual-
stage batch control is recommended.
Count Up or
Count Down
Batch total and grand total can set to count
up or count down, independently.
Start / Stop
Batch
The F4 digital input is assigned to start &
stop the batch, it is located on the input
signal connector.
An external push-button can be connected
between terminal F4 and COM. Press the
button once to start the batch and press it
again to stop the batch.
High or Low
Flow Alarm
The user may program any alarm for high
or low trip point. The alarm detection is
active only while the batch is running.
Unused alarm LEDs and relays may be
disabled (turned off).
Grand
Totalizer
Rollover
Grand totalizer rolls over when display
exceeds 999,999,999. Relay status reflects
display.
Grand Total
Overflow
The grand total can display up to
999,999,999 using the overflow feature.
After the value exceeds 999,999 a 3-digit
value with the prefix “oF” toggles every 10
seconds. The overflow feature can be
disabled by setting a grand total alarm that
automatically resets the grand total when
999,999 is reached.
Grand Total
Alarms
Up to three, user selectable under setup
menu. Any set point can be assigned to
grand total and may be programmed
anywhere in the range of the controller for
grand total alarm indication. Relay 1 should
always be assigned to batch.
Programmable
Delay on
Release
0.1 and 999.9 seconds; applied to the first
relay assigned to total or grand total.
If the controller is programmed to reset total
to zero automatically when the preset is
reached, then a delay will occur before the
total is reset.
Grand Total
Reset
Via front panel button, external contact
closure on digital inputs, automatically via
user selectable preset value and time
delay, or through serial communications.
Grand Total
Reset
Password
Grand total passwords may be entered to
prevent resetting the grand total from the
front panel.
Non-
Resettable
Grand Total
The grand total can be programmed as a
non-resettable total by entering the
password “050873”.
•Once the Grand Total has been
programmed as “non-resettable” the feature
CANNOT be disabled.

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
10
Pulse Input
Inputs
Field selectable: Pulse or square wave
0-5 V, 0-12 V, or 0-24 V @ 30 kHz; TTL;
open collector 4.7 kpull-up to 5 V @
30 kHz; NPN or PNP transistor, switch
contact 4.7 kpull-up to 5 V @ 40 Hz;
Modbus PV (Slave)
Isolated
Flowmeter
Power Supply
Terminals P+ & P-: 24 VDC 10%.
All models selectable for 24, 10, or 5 VDC
supply (Switch labeled P+/P-). 85-265 VAC
models rated @ 200 mA max, 12-24 VDC
powered models rated @ 100 mA max.
5 & 10 VDCsupply rated @ 50 mAmax. Refer
to Figure 8. Flowmeter Supply Voltage
Selection on page 16 for details.
When the Light / Horn is powered by the
flowmeter power supply, see MOD-PD2LH
Light / Horn's transmitter power supply
specification in MOD-PD2LH manual for
additional details. Light / Horn power not
available for 5 or 10 VDC supplies.
Low Voltage
Mag Pickup
(Isolated)
Sensitivity: 40 mVp-p to 8 Vp-p
Minimum Input
Frequency
0.001 Hz
Minimum frequency is dependent on high
gate setting.
Maximum
Input
Frequency
30,000 Hz
(10,000 for low voltage mag pickup)
Input
Impedance
Pulse input: Greater than 300 k@ 1 kHz.
Open collector/switch input: 4.7 kpull-up
to 5 V.
Input
Threshold
Low
High
1.6 V
3.3 V
Accuracy
±0.03% of calibrated span ±1 count
Temperature
Drift
Rate display is not affected by changes in
temperature.
Multi-Point
Linearization
2 to 32 points
Low-Flow
Cutoff
0.1 to 999,999 (0 disables cutoff function).
Point below at which display always shows
zero.
Decimal Point
Up to five decimal places or none:
d.ddddd, d.dddd, d.ddd, d.dd, d.d, or dddddd
Calibration
May be calibrated using K-factor, internal
calibration, or by applying an external
calibration signal.
K-Factor
Field programmable K-factor converts input
pulses to rate in engineering units. May be
programmed from 0.00001 to 999,999
pulses/unit.
Calibration
Range
Input 1 signal may be set anywhere in the
range of the controller; input 2 signal may be
set anywhere above or below input 1 setting.
Minimum input span between any two inputs
is 10 Hz.
An error message will appear if the input 1
and input 2 signals are too close together.
Filter
Programmable contact de-bounce filter:
40 to 999 Hz maximum input frequency
allowed with low speed filter.
Gate
Low gate: 0.1-99.9 seconds
High gate: 2.0-999.9 seconds
Relays
Rating
2 or 4 SPDT (Form C) internal rated 3 A
@ 30 VDC and 125/250 VAC resistive load;
1/14 HP (≈50 W) @ 125/250 VAC for
inductive loads
Noise
Suppression
Noise suppression is recommended for
each relay contact switching inductive
loads; see Switching Inductive Loads on
page 19 for details.
Relay
Assignment
Relays may be assigned to batch control
total, sampling, rate, or grand total alarms.
Pre-Close
0-100% of batch size, individually user
programmable for each additional batch
control relay beyond the first.
Alarm
Deadband
0-100% of span, user programmable
High or Low
Flow Alarm
User may program any alarm for high or
low trip point. The alarm detection is active
only while the batch is running. Unused
alarm LEDs and relays may be disabled
(turn off).
Relay
Operation
•Manual or automatic batch control
•Automatic (non-latching)1 and/or manual
alarm reset (acknowledge)
•Latching (requires manual
acknowledge) with or without clear
•Pump alternation control (N/A to batch)
•Sampling (based on set point and time)
•Off (disable unused relays and enable
Interlock feature)
•Manual on/off control mode
Relay Reset
(Acknowledge)
User selectable via programming buttons,
F4 digital input, external contact closure on
digital inputs, automatically via user
selectable preset value and time delay, or
through serial communications.
Alarm Time
Delay
0 to 999.9 seconds, on & off relay time
delays. Programmable and independent for
each relay.
Fail-Safe
Operation
Programmable and independent for each
relay.
Note: Relay coil is energized in non-alarm
condition. In case of power failure, relay will
go to alarm state.
Alarm Auto
Initialization
When power is applied to the controller,
relays will reflect the state of the input to
the controller.1
1. Alarms are active only when the batch is running.
USB Connection
Function
Programming only
Compatibility
USB 2.0 Standard, Compliant
Connector
Type
Type B receptacle
Cable
USB Type A-B cable
Driver
Microsoft®Windows®XP/Vista/7/8/10
Power
USB port provides power to the controller
for configuration only.
DO NOT apply AC or DC power to the
controller while the USB port is in use.
3.3 V
1.6 V
0 V

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
11
Isolated 4-20 mA Transmitter
Output
Output
Source
Rate/process, total, grand total, max, min,
set points 1-4, Modbus register, or manual
control mode
Scaling Range
1.000 to 23.000 mA for any display range.
Calibration
Factory calibrated:
4.000 to 20.000 = 4-20 mA output
Analog Out
Programming
23.000 mA maximum for all parameters:
Overrange, underrange, max, min, and
break
Accuracy
± 0.1% FS ± 0.004 mA
Temperature
Drift
0.4 µA/C max from 0 to 65C ambient,
0.8 µA/C max from -40 to 0C ambient
Note: Analog output drift is separate from
input drift.
Isolated
Transmitter
Power Supply
Terminals I+ & R: 24 VDC 10%. May be
used to power the 4-20 mA output or other
devices.
All modelsrated @ 40mAmax.
External Loop
Power Supply
35 VDC maximum
Output Loop
Resistance
Power supply
Minimum
Maximum
24 VDC
10 
700 
35 VDC
(external)
100 
1200 
Additional
4-20 mA
Outputs
The PD659-1MA-2MA can split the optional
4-20 mA output into two isolated 4-20 mA
outputs
0-10 VDC
Output
The PD659-1MA-1V can convert the
optional 4-20 mA output to a 0-10 VDC
output
RS-485 Serial Communications
Compatibility
EIA-485
Connectors
Removable screw terminal connector
Max Distance
3,937' (1,200 m) max
Status
Indication
Separate LEDs for Power (P), Transmit
(TX), and Receive (RX)
Modbus®RTU Serial
Communications
Slave Id
1 –247 (Controller address)
Baud Rate
300 –19,200 bps
Transmit
Time Delay
Programmable between 0 and 199 ms
Data
8 bit (1 start bit, 1 or 2 stop bits)
Parity
Even, Odd, or None with 1 or 2 stop bits
Byte-To-Byte
Timeout
0.01 –2.54 second
Turn Around
Delay
Less than 2 ms (fixed)
Note: Refer to the Helios Modbus Register Tables located
at www.predig.com for details.
Digital Input (F4)
Function
Start/Stop batch, remote operation of front-
panel buttons, acknowledge/reset relays,
reset max/min values. See Function Keys &
Digital I/O Available Settings on page 53 for
a complete list of capabilities.
Contacts
3.3 VDC on contact. Connect normally
open contacts across F4 to COM
Logic Levels
Logic High: 3 to 5 VDC
Logic Low: 0 to 1.25 VDC
Digital Inputs & Outputs
Function
Terminals provided for remote operation of
all four programming / operation buttons
(use PDA2364-MSBS control station).
Other uses include acknowledge/reset
relays and reset max/min values. See
Function Keys & Digital I/O Available
Settings on page 53 for a complete list of
capabilities.
Channels
4 digital inputs & 4 digital outputs
Digital Input
Logic High
3 to 5 VDC
Digital Input
Logic Low
0 to 1.25 VDC
Digital Output
Logic High
3.1 to 3.3 VDC
Digital Output
Logic Low
0 to 0.4 VDC
Source
Current
10 mA maximum output current
Sink Current
1.5 mA minimum input current
+5 V Terminal
To be used as pull-up for digital inputs only.
Connect normally open push buttons
across +5 V & DI 1-4.
•DO NOT use +5 V terminal to power external
devices.
MeterView Pro Software
Availability
Download directly from controller or from
www.predig.com/download_software
System
Requirements
Microsoft®Windows®XP/Vista/7/8/10
Communications
USB 2.0 (for programming only)
(Standard USB A to USB Type B)
RS-485 to USB converter
(programming, monitoring, batch
control, and data logging)
Configuration
Configure controllers one at a time
Power
USB port provides power to the
controller for configuration only.
DO NOT apply AC or DC power to the
controller while the USB port is in use.
Batch Control
Use MeterView Pro to control the
batch, change the preset, reset totals,
and test the relays.
Data Logging
Use MeterView Pro for data logging of
the batch process.

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
12
Compliance Information
Safety
UL & C-UL
Listed
USA & Canada
UL 508 Industrial Control Equipment
(USA)
C22.2 No. 142 (Canadian National
Standard)
UL File Number
E160849
Enclosure
UL Type 4X, NEMA 4X, IP65
Low Voltage
Directive
EN 61010-1
Safety requirements for measurement,
control, and laboratory use
Safety Information
•Read complete instructions prior to installation
and operation of the controller.
•Risk of electric shock or personal injury.
•Hazardous voltages exist within enclosure.
Installation and service should be performed only
by trained service personnel.
Installation
There is no need to open the clear plastic front
cover in order to complete the installation, wiring,
and setup of the meter. All programming is done
using MeterView Pro software or through the
buttons and switches located under the lower
door panel and are accessible by removing the
single securing screw. Wires should be run
through the knockout holes located on the bottom
of the meter, see Figure 5. Conduit Holes
Location –Bottom View on page 13 for details.
There are a total of four pre-drilled conduit entry
holes located at the bottom of the controller. If the
need to drill additional holes arises, make sure
you will have the clearance necessary for conduit
mounting hardware.
Do not disconnect the RJ45 connector found on
the right side of the controller wiring board. Doing
so will disable the on-board digital I/O, RS-485
serial communications, and M-Link functionality.
Instructions are provided for changing the
flowmeter power supply to output 5 or 10 VDC
instead of 24 VDC, see Figure 8. Flowmeter
Supply Voltage Selection on page 16.
Unpacking
Remove the controller from box. Inspect the
packaging and contents for damage. Report
damages, if any, to the carrier.
If any part is missing or the controller
malfunctions, please contact your supplier or the
factory for assistance.

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
13
Wall Mounting Instructions
The controller can be mounted to any wall using the
four provided mounting holes. Note that the bottom
mounting holes are located underneath the lower door
panel. To mount the controller to a wall, follow these
instructions
•Prepare a section of wall approximately 11" x 13"
(280 mm x 330 mm) for controller mounting by
marking with a pencil the mounting holes (shown
in Figure 1) on the wall.
•Select the appropriate mounting screws for the
mounting surface to be used. The mounting holes
diameter is shown on Figure 2.
Note: Mounting screws are not included.
•Using a drill bit slightly smaller than the girth of
the mounting screws, pre-drill holes at the
mounting locations previously marked.
•Insert mounting screws into the four mounting
holes and screw them into the pre-drilled holes.
DO NOT overtighten the mounting screws as it is
possible that the enclosure could crack and
become damaged.
Figure 1. Controller Mounting Holes Location
Figure 2. Controller Mounting Holes Dimensions
Mounting Dimensions
Figure 3. Controller Dimensions –Side View
Figure 4. Controller Dimensions - Front View
Conduit Holes Location
Figure 5. Conduit Holes Location –Bottom View
Mounting Hole
Mounting Hole
Mounting Hole
Mounting Hole
Lower
Door
Panel
10.43" (265 mm)
9.8" (249 mm)
11.14" (283 mm)
Dia. 0.2"
(5.5 mm)
Dia. 0.2"
(5.5 mm)
2.63" (67 mm)
4.77"
(121.2 mm)
10.63" (270 mm)
12.59" (319.7 mm)
Mounting HoleMounting Hole
Lower
Door
Panel
Plugged
Holes Unplugged Holes
1.1"
(27.9 mm)
1.99"
(50.5 mm)
0.9"
(23 mm) Ø0.74" (18.9 mm) Drill or Punch-Out Holes

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
14
Pipe Mounting Instructions
The controller can also be mounted to a pipe using
the optional pipe mounting kit (PDA6260). This kit
includes two mounting plates, two U-bolts, and the
necessary nuts and bolts. To mount the controller to a
pipe using the pipe mounting kit accessory, follow
these instructions.
•Secure the mounting plates to the top and bottom
(for vertical pipes) or left and right (for horizontal
pipes) of the reverse side of the controller
enclosure using the provided fasteners.
DO NOT overtighten the fasteners as it could
cause damage to the enclosure.
•Using the provided nuts and U-bolts, secure the
mounting plates to the pipe applying enough
torque such that the controller cannot be moved
up or down (or side to side).
Figure 6. Vertical Pipe Mount Assembly
Figure 7. Horizontal Pipe Mount Assembly
Mounting Plate U-Bolt
Pipe
U-Bolt
Back of
Meter
Mounting Plate
Mounting
Plate Mounting
Plate
Pipe
Back of
Meter U-BoltU-Bolt

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
15
Installation Overview
We recommend the following sequence for getting the
controller into service:
1. DO NOT apply AC or DC power to the controller.
2. Connect the controller to the PC with the USB
cable provided. DO NOT use a different USB
cable.
3. If MeterView Pro (MVPro) is already installed in
your computer, then the program will launch
automatically in most systems. If the program
does not start automatically, double-click on the
MVPro icon.
4. If MVPro is not installed, follow the instructions
provided below.
5. Use MVPro to configure the controller for your
application.
6. Disconnect the USB cable from the controller.
7. Apply power and signal and check operation of
the controller.
8. Install the controller and put into service.
9. Make any programming adjustments using the
programming buttons.
MeterView Pro Software
The easiest and quickest way to program your Helios
controller is to use the FREE MeterView Pro
programming software. This software is loaded into
the controller and connects and installs directly to
your PC with the USB cable provided. DO NOT use a
different USB cable. We recommend that the first
thing you do after taking the controller out of the box
is connect the Helios to your PC with the provided
USB cable. DO NOT apply AC or DC power to the
controller while your PC is connected to the controller
as it will disrupt the USB connection. It is not
necessary to apply an input signal.
MeterView Pro programming software is intuitive, and
most customers can get their controller programmed
as they like without even looking in the manual.
Watch Meterview Pro Software Video at
www.predig.com/meterviewpro
MeterView Pro Installation
1. Connect one end of the provided USB cable
to the controller and the other end to the
computer. The computer will automatically
install the driver software it needs to talk to
the controller. Follow the on-screen
instructions and allow sufficient time for the
process to complete. This can take a few
minutes. If the process is interrupted, then it
could leave the system in an unstable
condition.
•Only one controller may be connected at a time.
Attaching multiple controllers will cause a conflict
with the controller software.
•DO NOT apply AC or DC power to the controller
when using the USB connection.
2. Once the driver is installed, an AutoPlay
dialog should appear for the drive
“MAINSTAL.” Click “Open folder to view
files.”
If the computer does not display an AutoPlay
dialog for the drive “MAINSTAL,” you should
open My Computer and double-click on the
drive labeled “MAINSTAL.”
3. Double-click on the file named “MAStart.”
The program will open a few windows and
install two programs on your computer.
Simply follow the on-screen instructions until
you see one of the dialogs below. If you
receive a “User Account Control” warning,
click “Yes.”
4. If there is an update available, click the
“Update” button to install the new version.
Otherwise, click “Configure” to begin
programming your controller.
Note: If you decide to update your MeterView Pro
software, once the installation has completed, you
will be asked if you want to update the setup files
located on the controller itself. This way, you will
always have the most current version on the
controller for future installs.
•DO NOT unplug the controller while the new
installation files are being written to it. The
controller will display uwrite during the process
and you will receive an on-screen notification
once the process is complete.

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
16
Flowmeter Supply Voltage
Selection (P+, P-)
All controllers, including models equipped with
the 12-24 VDC power option, are shipped from
the factory configured to provide 24 VDC power
for the flowmeter or sensor.
If the flowmeter requires 5 or 10 VDC excitation,
the switch labeled P+/P- must be configured
accordingly.
To access the voltage selection switch:
1. Turn off the power to the controller.
2. Unscrew and open the lower door panel.
3. Locate the P+/P- switch located in the
center of the connections board (see
diagram below).
4. Flip this switch into the appropriate
position for the required flowmeter
excitation.
Figure 8. Flowmeter Supply Voltage Selection
P+/P-
24V 10V 5V
MENU RIGHT UP ACK
MENU START
F1
BATCH
F2
STOP
F3

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
17
Connections
All connections are made to screw terminal connectors located under the lower door panel. Remove the single
securing screw in order to access the wiring terminals.
•Use copper wire with 60°C or 60/75°C insulation for all line voltage connections. Observe all safety regulations.
Electrical wiring should be performed in accordance with all applicable national, state, and local codes to prevent
damage to the controller and ensure personnel safety.
Connectors Labeling
The connectors’ label, affixed to the inside of the lower door panel, shows the location of all connectors available with
the ordered configuration.
•DO NOT connect any equipment to the RJ45 M-LINK connector. Otherwise damage will occur to the
equipment and the controller.
•DO NOT disconnect the RJ45 connector located to the left of the power terminal block. Doing so will disable
the on-board digital I/O, and the RS-485 serial communications.
Figure 9. PD2-6310-6H2 / 7H2 Connectors Label
Figure 10. PD2-6310-6H7 / 7H7 Connectors Label
RI-I+
+-
NONC
C
21
1
2
3
4
5
6
7
8
P+/P-
24V 10V 5V
RS-485
DIGITAL I/O
M-LINK
USB
MENU RIGHT UP ACK
POWER
PWR TX RX
DI DI DO DO
O1 O2 O3 O4 G
I1I2I3I4
+5
__ __
NONCCNONCCNONCC
MA OUT
21 3 43 6521 RELAY4RELAY3 43 6521
RELAY2RELAY1
P- COMP+ S+ S-
3412 5
F4
6
mV PNP NPN
SWITCH
SIGNAL
MENU START
F1
BATCH
F2
STOP
F3

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
18
Power Connections
Power connections are made to a two-terminal
connector labeled POWER. The controller will operate
regardless of DC polarity connection. The + and -
symbols are only a suggested wiring convention. There
are separate models for low voltage and high voltage
power. See Ordering Information on page 6for
details.
Figure 11. Power Connections
Pulse Signal Connections
Signal connections are made to a six-terminal
connector labeled SIGNAL. The COM (common)
terminal is the return for the input signals.
The following figures show examples of signal
connections. Setup and programming is performed
through the programming buttons or MeterView Pro
software.
Figure 12. Flowmeter Powered by Internal Power
Supply
Figure 13. Flowmeter Powered by External Supply
Figure 14. Self-Powered Magnetic Pickup Coil
Flowmeter
Figure 15. NPN open Collector Input
Figure 16. PNP Sensor Powered by Internal
Supply
Figure 17. Switch Input Connections
Relay Connections
Relay connections are made to two six-terminal
connectors labeled RELAY1 –RELAY4. Each relay’s
C terminal is common only to the normally open (NO)
and normally closed (NC) contacts of the
corresponding relay. The relays’ C terminals should
not be confused with the COM (common) terminal of
the INPUT SIGNAL connector.
Figure 18. Relay Connections
AC or DC
POWER
Required External Fuse:
5 A max, 250 V Slow Blow
POWER
+-
NPN
SENSOR
4.7 k-ohm
Internal pull-up
+5 V
P- COMP+ S+ S-
3412 5
F4
6
INPUT SIGNAL
mV PNP NPN
SWITCH
SWITCH
INPUT
4.7 k-ohm
Internal pull-up
+5 V
P- COMP+ S+ S-
3412 5
F4
6
INPUT SIGNAL
mV PNP NPN
SWITCH
CNONO NC NC C
RELAY4 RELAY3
4 36 5 2 1
CNONO NC NC C
RELAY2 RELAY1
4 36 5 2 1

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
19
Switching Inductive Loads
The use of suppressors (snubbers) is strongly
recommended when switching inductive loads to
prevent disrupting the microprocessor’s operation.
The suppressors also prolong the life of the relay
contacts. Suppression can be obtained with resistor-
capacitor (RC) networks assembled by the user or
purchased as complete assemblies. Refer to the
following circuits for RC network assembly and
installation:
Figure 19. AC and DC Loads Protection
Choose R and C as follows:
R: 0.5 to 1 for each volt across the contacts
C: 0.5 to 1 µF for each amp through closed contacts
Notes:
1. Use capacitors rated for 250 VAC.
2. RC networks may affect load release time of
solenoid loads. Check to confirm proper
operation.
3. Install the RC network at the controller's relay
screw terminals. An RC network may also be
installed across the load. Experiment for best
results.
Use a diode with a reverse breakdown voltage two to three
times the circuit voltage and forward current at least as large
as the load current.
Figure 20. Low Voltage DC Loads Protection
RC Networks Available from
Precision Digital
RC networks are available from Precision Digital and
should be applied to each relay contact switching an
inductive load. Part number: PDX6901.
Note: Relays are de-rated to 1/14th HP (50 watts)
with an inductive load.
RS-485 Connections
The RS-485 connections are made to a five terminal
connector used for Modbus®RTU serial
communications. The RS-485 terminals include
Transmit Data (DO) and (/DO), Receive Data (DI) and
(/DI), and Signal Ground. See Modbus RTU Serial
Communications (serial) on page 50 for more
information.
There are three diagnostic LEDs: Power (PWR)
Transmit Data (TX), and Receive Data (RX) to show
when the controller is transmitting and receiving data
from other devices.
Figure 21. RS-485 Connection
RS-485 Multi-Drop Connection
When using more than one controller in a multi-drop
mode, each controller must be provided with its own
unique address. The controller address (Slave ID) can
be programmed between 1 and 247. The transmit
delay can be set between 0 and 199 ms. The parity
can be set to even, odd, or none with 1 or 2 stop bits.
To change the controller address:
1. Press and hold the Menu button for three
seconds to access Advanced Features menu of
the controller.
2. Press Up arrow until Serial (SEriaL) menu is
displayed and press Enter, Addres is displayed.
3. Press Enter to change controller address using
Right and Up arrow buttons. Press Enter to
accept.
4. Press Menu button to exit and return to Run
Mode.
RS-485 Serial Converters
To convert the RS-485 to RS-232, use the PDA7485-I
converter. To convert the RS-485 to USB, use the
PDA8485-I converter. See Ordering Information on
page 6for additional information.
C
R
C
R
RS-485
PWR TX RX
DI DI DO DO
__ __

Helios PD2-6310 Pulse Input Batch Controller
Instruction Manual
20
RS-485 Connection Examples
Figure 22. Five-Wire RS-485 Connections
Figure 23. Three-Wire RS-485 Multi-Drop
Connections
Notes:
1. Termination resistors are optional, and values
depend on the cable length and characteristic
impedance. Consult the cable manufacturer for
recommendations.
2. Refer to RS-232 to RS-485 Converter
documentation for further details.
3. Use shielded cable, twisted-pair plus ground.
Connect ground shield only at one location
RS-485 Converter Connections
Figure 24 below details the wiring connections from
the RS-485 connector to an RS-485 serial converter
(such as the PDA7485-I or PDA8485-I) for a five-wire
network.
RS-485 Connector to RS-485
Serial Converter Connections
RS-485 Connector
RS-485 to USB or
RS-232 Converter
DO
DI
DO
DI
DI
DO
DI
DO
Figure 24. Connections for RS-485 Connector to
Serial Converter
Three-Wire Connection
In order to wire the five pins for use as a three-wire
half-duplex RS-485 connection, it is necessary to
create a jumper connection between DI to DO and /DI
to /DO- as shown below.
Figure 25. Three-Wire RS-485 Connection
Digital I/O Connections
Digital inputs and outputs are provided in order to
expand the functionality of the controller. Digital input
connections are made via a push button or switch to
the appropriate digital input terminal and the +5 VDC
terminal. Digital output connections are made by
wiring from the appropriate digital output terminal to
the ground terminal.
Figure 26. Digital Input and Output Connections
Shield
RS-232 Serial
Connection
to PC
R
R
Twisted-Pair
R
DI DI DO DO
__ __
RS-232 to RS-485
Converter
DI
DIDO DO
R
Shield
Twisted-Pair
R
Meter #1
DI DI DO DO
__ __ DI DI DO DO
__ __
Last Meter
RS-232 Serial
Connection
to PC
R
RS-232 to RS-485
Converter
DI
DIDO DO
__ __
DI DI DO DO
O1 O2 O3 O4 G
I1I2I3I4+5
Ground
5 VDC