Precision Digital Corporation ProtEX PD6830X User manual

PD6830X Explosion-Proof Modbus®Scanners
Instruction Manual
PRECISION DIGITAL CORPORATION
233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]
www.predig.com
•Fully-Approved Explosion-Proof Modbus Scanners
•Modbus Master, Slave, or Snooper Mode
•0.4" (10.2 mm) 7 Alphanumeric Characters Lower Display for Process Variables, Custom Units, and Tags
•5-Digit Decimal Display (ProtEX-MS2) or Feet & Inches Display (ProtEX-MFI)
•Display Mountable at 0°, 90°, 180°, & 270°
•SafeTouch Through-Glass Button Programming
•Scan up to 16 Modbus Process Variables
•Independent Scaling, Tag, and Unit for Each PV
•Backlight Standard on All Models
•Isolated 4-20 mA Output Option
•Two Isolated Pulse Outputs Standard, Up to 5 kHz
•Operating Temperature Range: -40 to 75°C (-40 to 167°F)
•FM Approved as Explosion-Proof / Dust-Ignition Proof / Flame-Proof
•CSA Certified as Explosion-Proof / Dust-Ignition Proof / Flame-Proof
•ATEX and IECEx Certified as Flame-Proof and Protection by Enclosure
•Conformal Coated PCBs for Dust and Humidity Protection
•Password Protection
•Data Logging Functions and Modbus Accessible Data
•Free ScanView EX Programming Software
•On-Board Three-Wire Isolated RS-485 with Modbus RTU
•Wide Viewing Angle
•Flanges for Wall or Pipe Mounting
•Explosion-Proof, IP68, NEMA 4X Enclosure
•Three 3/4" NPT Threaded Conduit Openings (One Plug Installed)
•2" U-Bolt Kits Available
•Stainless Steel Tag Available
•3-Year Warranty

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
2
Disclaimer
The information contained in this document is
subject to change without notice. Precision
Digital Corporation 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.
•Read complete instructions prior to installation
and operation of the scanner.
•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.
•Failure to follow installation guidelines could
result in death or serious injury. Make sure only
qualified personnel perform the installation.
•Never remove the scanner cover in explosive
environments when the circuit is live.
•Cover must be fully engaged to meet
flameproof/explosion-proof requirements.
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.
© 2021 Precision Digital Corporation.
All rights reserved.
Introduction
The explosion-proof ProtEX-MS2 and ProtEX-MFI
Super Snoopers are serial input RS-485 Modbus®
RTU scanners. These Modbus devices are ideal for
hazardous areas or safe areas in need of a rugged
solution. The ProtEX-MS2 has a two-line decimal
display. The ProtEX-MFI top line displays level in feet
and inches up to 399 ft, 11 and 15/16 inches. It
includes a 20 segment tank level indicator.
Each scanner can accept up to 16 Modbus process
variables (PVs), from up to 16 devices. The scanners
automatically cycle through the PVs, with the ability to
manually cycle PVs or pause scanning.
Up to four math channels (CV1-CV4) may be used to
perform math functions on any of the input variables.
Math functions include sum, difference, weighted
average, ratio and more. Nested math functions may
be used in these math equations, allowing for
complex math functions.
The display is programmable to show any input, math
channel, units, or tags, on a variety of display
combinations between the top and bottom displays.
Standard features include SafeTouch through-glass
buttons for operating the scanner without removing
the cover, a backlight that makes the display mode
visible in any lighting condition, 511 points of input
data logging, and two open collector pulse or alarm
outputs. A 4-20 mA output is available as an option.
The enclosure is provided with three threaded conduit
holes and integrated pipe or wall mounting flanges.
One conduit plug is installed, and included in the
explosion-proof approvals.
Free, PC-based, ScanView EX software that connects
to the scanner via the PDA8068, PDA7485-I,or the
PDA8485-I is available for programming and setup of
the instrument.
The instrument can also be programmed using the
four SafeTouch through-glass buttons, without
removing the cover, or with four internal push-buttons.
The PD6830X includes on-board data logging of up to
511 points.

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
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Ordering Information
Model Description
PD6830-AX0-I-2 Modbus RS-485 RTU scanner,
9-30 VDC power.
PD6830-AXA-I-2 Modbus RS-485 RTU scanner,
isolated 4-20 mA output,
9-30 VDC power.
PD6830-AX0-I-L Modbus RS-485 RTU scanner,
feet & inches display,
9-30 VDC power.
PD6830-AXA-I-L Modbus RS-485 RTU scanner,
feet & inches display,
isolated 4-20 mA output,
9-30 VDC power.
Accessories
Model Description
PDAPLUG75 3/4" Metal Conduit/Stopping Plug
PDA0001 3/4" M-NPT to F-M20 Reducer
PDA0002 3/4" M-NPT to 1/2" F-NPT Reducer
PDA1024-01 24 VDC Power Supply for DIN Rail
PDA8068 USB Serial Adapter for Programming
PDA7485-I PDA7485 RS-232 to RS-485 Converter
PDA8485-I USB to RS-485 Isolated Converter
PDA6846
Steel 2" U-Bolt Kit. All Material: Zinc
Plated Steel; (1) U-Bolt for 2" Pipe with
(2 each) Washers, Lock Washers, and
Nuts.
PDA6846-SS
Stainless Steel 2" U-Bolt Kit. All
Material: Stainless Steel; (1) U-Bolt for
2" Pipe with (2 each) Washers, Lock
Washers, and Nuts.
PDA-SSTAG Custom Stainless Steel Tag (see
website for convenient ordering form)
PDA1024-01 24 VDC Power Supply
The PDA1024-01 is a DIN rail mounted 1.5 A,
24 VDC power supply that can be used to power
the PD6830X.
PDA8068 USB Serial Adapter
The PDA8068 USB serial adapter is used to connect
the PD6830X directly to a computer via USB. It is
intended to be used for programming only. No live
monitoring is possible with this module.
PDA6846 2"U-Bolt Kits
The PDA6846 U-Bolt Kits provide a convenient way to
mount the PD6830X to 1.5" or 2" pipes. They are
available in steel and stainless steel.
PDA-SSTAG Stainless Steel Tag
The PDA-SSTAG is a laser etched stainless steel tag
that can be customized with three lines of text. Each
tag comes with a stainless steel wire and lead seal for
easy mounting wherever you need.

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
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Table of Contents
Introduction......................................................................................................... 2
Ordering Information.......................................................................................... 3
Specifications ..................................................................................................... 7
General............................................................................................................ 7
Modbus Operating Modes ............................................................................. 8
Serial Communications ................................................................................. 8
Modbus Scanner Process Variables............................................................. 8
Math Channels................................................................................................ 9
4-20 mA Transmitter Output.......................................................................... 9
Open Collector Outputs................................................................................. 9
ScanView EX Programming Software ........................................................ 10
Product Ratings and Approvals.................................................................. 11
Electromagnetic Compatibility.................................................................... 11
Safety Information........................................................................................ 11
Installation......................................................................................................... 12
Unpacking..................................................................................................... 12
Pre-Installed Conduit Plug .......................................................................... 12
Mounting ....................................................................................................... 12
Dimensions................................................................................................... 12
Cover Jam Screw ......................................................................................... 13
Connections ................................................................................................. 13
Wiring Diagrams........................................................................................... 14
DC Power Connection ............................................................................... 14
4-20 mA Transmitter Output Connections.................................................. 14
RS-485 Signal Connections....................................................................... 14
Open Collector Output Connections .......................................................... 14
Setup and Programming.................................................................................. 15
Overview ....................................................................................................... 15
ScanView EX Programming Software ........................................................ 15
SafeTouch Buttons ...................................................................................... 15
SafeTouch Button Tips and Troubleshooting............................................. 16
Buttons and Display..................................................................................... 17
Setting Numeric Values ............................................................................... 18
Setting Alphanumeric Labels (LABEL)......................................................... 18
Main Menu......................................................................................................... 19
Display Functions & Messages................................................................... 19
Main Menu Programming ............................................................................ 21
Select Operating Mode (MODE) ..................................................................... 21
Master Mode (MASTER) .................................................................................. 22
PV Number Configuration (PV NUM) ........................................................... 22
Poll Time (T POLL)..................................................................................... 23
Response Timeout (TIMEOUT).................................................................... 23
Retries Before Error (RETRIES) .................................................................. 23
Slave Mode (SLAVE) ...................................................................................... 24
PV Number Configuration (PV NUM) ........................................................... 24
Slave Response Timeout (TIMEOUT).......................................................... 24
Snooper Mode (SNOOPER) ............................................................................. 25
Snooper Mode PV Configuration (PV NUM) ................................................ 25
Snooper Mode Response Time (T RESP) .................................................. 25
Setup the Display (SETUP) ............................................................................ 26

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
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Setting Up the Display (DISPLAY) ................................................................ 26
Top Display (TOPDSP)................................................................................. 27
Bottom Display (BOTDSP)............................................................................ 27
PV Display Setup (PVSETUP) ...................................................................... 28
Math Channel Display Setup (MATH) .......................................................... 31
Tank Size Indicator (TANKSZ) ..................................................................... 33
Tag Display Time (T-TAG).......................................................................... 33
Units Display Time (T-UNITS) .................................................................... 33
Scan Time (T-SCAN)................................................................................... 33
Serial Communications Settings (COMM) ..................................................... 34
Scanner Modbus ID (SCAN ID) .................................................................. 34
Baud Rate (BAUD)....................................................................................... 34
Transmit Delay Time (TXDELAY)................................................................. 34
Parity (PARTIY)........................................................................................... 34
Advanced Menu ................................................................................................ 35
Display Functions & Messages................................................................... 35
Advanced Menu Programming (ADVANCE) .................................................. 37
Open Collector Outputs (OUTPUT) .............................................................. 38
Scaling the 4-20 mA Analog Output (Aout)................................................ 40
Selecting the Analog Output Source .......................................................... 40
Enter Display and Output Values ............................................................... 41
Math Channel (CV1 to CV4) Programming (MATH)..................................... 41
Setting Up Passwords (PASSWRD)............................................................... 43
Custom (CUSTOM) ....................................................................................... 44
System (SYSTEM)........................................................................................ 45
Operation........................................................................................................... 49
Front Panel Buttons Operation ................................................................... 49
Pause/Start Automatic Scanning................................................................ 50
Manual Scanning.......................................................................................... 50
Reset Scanner to Factory Defaults............................................................. 50
Factory Defaults & User Settings................................................................ 51
Application Examples ...................................................................................... 55
Example 1: Master Polling Multivariable Level Transmitters ................... 55
Example 2: Snooper Displaying Flow Rate from Modbus Flow Meters... 59
Troubleshooting ............................................................................................... 61
Troubleshooting Tips................................................................................... 61
Quick User Interface Reference ...................................................................... 62
EU Declaration of Conformity.......................................................................... 63

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
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Table of Figures
Figure 1. Enclosure Dimensions – Front View................................................... 12
Figure 2. Enclosure Dimensions – Side Cross Section View ........................... 12
Figure 3. Connector Board Mounted in Base of Enclosure .............................. 13
Figure 4. Connectors & Switches on Rear of Display Module.......................... 13
Figure 5. DC Power Connections ........................................................................ 14
Figure 6. 4-20 mA Output Connections .............................................................. 14
Figure 7. RS-485 3-Wire Serial Connections ...................................................... 14
Figure 8. RS-485 5-Wire Serial Connections ...................................................... 14
Figure 9. Open Collector Output Connections................................................... 14
Figure 10. Real Time Clock Display Example – Decimal Model........................ 45
Figure 11. Real Time Clock Display Example – Feet & Inches Model .............. 45

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
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Specifications
Except where noted all specifications apply to operation at +25°C.
General
Display
Top Display
Five digits (0 to 99999),
0.7" (17.8 mm) high,
7-segment,
automatic lead zero blanking.
Bottom
Display
Seven alphanumeric
characters,
0.4" (10.2 mm) high,
14-segment,
automatic lead zero blanking.
Symbols
High alarm, low alarm,
SafeTouch button sleep
mode/disable, password lock
Feet & Inches
Display
(-L Models)
Top Display
Feet & Inches,
0.60" (15.2 mm) high,
0 to 399FT 1115/16 IN
7-segment, programmable
1/16 or 1/8 fraction display
Bottom
Display
Seven Characters,
0.4" (10.2 mm) high,
14-segment, 7-digits
Tank Level
Indicator
20-segments, F (Full)
and E (Empty)
Alarm
Indication
High and low alarm
Backlight
White
Display
Assignment
Top and Bottom Display*: Process
Variables (PV); Alternating PV and Units,
Tag and PV, or Tag, PV, and Units.
Bottom Display: All Top Display Options
or Off
Units and tag independent for each PV.
* On feet and inches display models, top
display used only for level Modbus process
variables or math channels.
Backlight
White; it can be disabled/enabled in the
Advanced - System menu. The backlight is
automatically turned off below -20°C.
Alarm
Indication
Flashing display plus HI/LO indicators
Scan and
Update Rate
Ambient > -20°C: Modbus PV scan rate
programmable from 2 to 99 seconds per
PV. Tag and units programmable for 1 to 5
second alternation.
Ambient < -20°C: All Modbus scan, alter-
nating units and tags 1 update/10 seconds
minimum.
Underrange
Upper Display: Decimal display flashes
-9999
Level display flashes to 399FT 1115/16 IN
Lower Display: Flashes -
999999
Overrrange
Upper Display: Decimal display flashes
99999
Level display flashes to 399FT 1115/16 IN
Lower Display: Flashes
999999
Programming
Method
Four SafeTouch through-glass buttons
when cover is installed. Four internal
pushbuttons when cover is removed.
Free ScanView EX software.
Password
Restricts modifications of programmed
settings to require re-entering the
password to make changes.
Input Power
9-30 VDC, 2.2 W
Data Logging
Up to 511 records, recorded 4/day at spe-
cific times or at defined time intervals.
Record contains first eight enabled Mod-
bus PVs; C1-4 if enabled; date; time, and
log number.
Isolation
All Models:
500 V power-to-RS-485
serial communications
-AXA Models:
500 V power-to-analog
output
Environmental
Operating temperature range: -40 to 75°C
Storage temperature range: -40 to 75°C
Backlight deactivated below
temperatures ≈-20°C
Relative humidity: 0 to 90% non-condensing
Printed circuit boards are conformally coated.
Non-Volatile
Memory
All programmed settings are stored in non-
volatile memory for a minimum of ten years
if power is lost.
Connections
Screw terminals accept 12 to 22 AWG wire
Enclosure
Explosion-proof die-cast aluminum with
glass window, corrosion resistant epoxy
coating, copper-free (0.3%)
Color: blue.
NEMA 4X, 7, & 9, IP68.
Conduit connections:
Three ¾" NPT threaded conduit openings.
One ¾" NPT metal plug with 12 mm hex
key fitting installed. Additional conduit
opening configurations and plugs may be
available; verify quantity and sizes on
specific device labeling during installation.
Mounting
May be mounted directly to conduit. Two
slotted flanges for wall mounting or NPS
1½" to 2½" or DN 40 to 65 mm pipe
mounting. See Dimensions on page 12.
Display
Orientation
Display may be mounted at 90° increments
up to 270° from default orientation.
Overall
Dimensions
5.67" x 5.24" x 4.88" (W x H x D)
(144 mm x 133 mm x 124 mm)
Weight
5.00 lbs (80 oz, 2.27 kg)
Warranty
3 years parts and labor. See Warranty
Information and Terms & Conditions on
www.predig.com for complete details.

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
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Modbus Operating Modes
Master
Processes and displays data read from
Modbus RTU slave devices. Up to 16
process variables (PVs) from up to 16 slave
devices. Each PV programmed individually.
Slave
Processes data sent to it from a
Modbus RTU master device.
Note: Refer to Modbus Register Tables at
https://www.predig.com for details.
Snooper
Listens to the Modbus traffic and picks up a
specific register or registers being polled by
a Master device from a specific slave
device and processes the data being read.
Up to 16 process variables (PVs) from up to
16 devices.
If multiple
registers are polled by the master
with one command, only the first returned
value will be read.
Master Poll
Time
0.1 to 99.9 sec. Time between read-
commands.
Master
Timeout
0.1 to 99.9 seconds. Time elapsed after a
poll request is made before the scanner
considers that request to have failed.
Number of
Retries
1-99. The number of retries the scanner will
make when requesting data before
reporting an error condition on the PV.
Snooper
Response
Time
0.1 to 99.9 seconds. Time since the last PV
update the before being considered an
error.
Slave Timeout
0.0 to 99.9 seconds. Time elapsed after the
last data received from a master before the
scanner considers the data to be out of
date. Programming 0 disables the timeout,
and PV data will be displayed indefinitely
despite not being updated regularly.
Serial Communications
Protocol
Modbus® RTU
Scanner Id
1 – 247. Specifies the address of the
PD6830X.
Baud Rate
1,200; 4,800; 9,600; 19,200; 38,400;
57,600; or 115,200 bps
Transmit Time
Delay
Programmable between 0 and 199 ms
Parity/Stop Bit
Even, odd, none with 1 stop bit, or none
with 2 stop bits
Byte-to-Byte
Timeout
Max of 1.5 character times or 750 μs
Note: Refer to Modbus Register Tables at www.predig.com for details.
Modbus Scanner Process
Variables
PV Inputs
Up to 16 independently programmed
Modbus process variables (PVs) may
be scanned (Master mode) or detected
(Snooper mode). Each of the 16
Modbus PVs may be enabled or
disabled.
Slave Id
Specifies which device on the bus to
monitor. Valid for Master and Snooper
modes only.
Assign the slave ID or address (1-247)
of each of the devices containing the
process variables to be displayed
(Slave ID for PV1-16).
Register Number
Specifies which register(s) to read in
the devices on the bus.
5 Digit Function 03: 40001–49999;
04: 30001–39999; or 65: 1–9999.
6 Digit Function 03: 400001–465535 or
04: 300001–365535; or 65: 1–65535.
Range is dependent on Function Code
selection (03, 04, or 65)
Will read 2 registers for Long integer
and Floating point data types; the
register entered and the next
consecutive register number.
Valid for Master and Snooper modes
only.
Function Code
03, 04, and 65 (used to read 32 bit
registers). Master & Snooper modes
only.
Data Type
Select the data format of the PVs.
Select between short integer (2 byte),
long integer (4 byte), or floating point
(4 byte). Slave mode uses floating point
only.
Byte Order
Integer data programmable as binary or
BCD, and signed or unsigned. Byte
order selectable as big-endian (1234),
little-endian (4321), byte swap big-
endian (2143), or byte swap little-
endian
(3412). Byte swap unavailable for short.

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
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Math Channels
Math Result
Chanels
Four math channels CV1-CV4.
Each math channel may be
programmed for a math function.
Math Functions
Parameter 1 (PAR1), parameter 2
(PAR2), and parameter 3 (PAR3)
independently programmable for each
math channel C1-C4.
Math Function
Function
Setting
Addition
PAR1 + PAR2
SUM
Difference
PAR1 - PAR2
DIF
Multiplication
PAR1 * PAR2
MULTI
Division
PAR1 / PAR2
DIVIDE
Absolute diff.
Abs(PAR1 - PAR2)
DIFABS
Weighted avg.
((PAR1 – PAR2)*PAR3) +PAR2
WAVG
Draw
((PAR1 / PAR2) – 1) * PAR3
DRAW
Ratio
(PAR1 / PAR2) * PAR3
RATIO
Concentration
PAR1 / (PAR1 + PAR2) * PAR3
CONCEN
Constant
Constant
CONST
Long Integer
Constant
LONG
Floating Pt.
Constant
FLOAT
None Disable NONE
Absolute Value
Abs(PAR1)
ABS
Square Root
√(PAR1)
SQrt
Parameter
Selection
Parameter 1 (PAR1), parameter 2
(PAR2), and parameter 3 (PAR3)
selectable as: Modbus PV1-16, math
channel CV1-4 or any math function.
Parameter
Nested Math
Defining parameter 1 or 2 as a math
function will prompt for level 2
parameter 1 (L2P1), level 2 parameter
2 (L2P2), and/or level 2 parameter
3 (L2P3). Level 2 parameters function
identically as parameter 1 and 2 for
nested math functions.
4-20 mA Transmitter Output
Output Source
Modbus PV 1-16, math channel 1-4, or
disabled
Scaling Range
4.000 to 20.000 mA for any display range.
Disable
If disabled, the output will output 3.2 mA
Calibration
Factory Calibrated:
0.0 to 1000.0 = 4-20 mA output
Underrange
Output Underrange: 3.8 mA
Overrange
Display Overrange: 20.5 mA
Output Overrange: 20.5 mA
Accuracy
± 0.05% span ± 0.004 mA
Temperature
Drift
0.08 µA/°C max from -40 to 75°C ambient
External Loop
Power Supply
30 VDC maximum
Output Loop
Resistance
Power supply
Minimum
Maximum
24 VDC
10 Ω
750 Ω
30 VDC
100 Ω
1100 Ω
Open Collector Outputs
Output
Assignment
Two open collector pulse outputs.
Individually programmable for Modbus PV,
math channel, constant timed pulse output;
quadrature outputs (requires Out 1 and
Out 2), or off.
Rating
Isolated open collector, sinking NPN,
30 VDC @ 150 mA max.
Alarm Output
Assign to Modbus PV 1-16 or math channel
1-4, for high or low alarm trip point.
Alarm Deadband
0-100% FS, user selectable
Alarm
Acknowledge
Front panel ACK button resets output and
screen indication.
Pulse Output
Count
The pulse output count (
COUNT
) is
programmable from 0.000001 to 9999999.
PV and math channels generate a frequency
equal to the PV or math value divided by the
Count value.
Pulse Output
Pulse Width
Unless otherwise stated, pulses are 50%
duty cycle for required frequency.
Pulse Output
Maximum
Frequency
5 kHz, pulse width at 50% duty cycle.
If the outputs exceed 5 kHz, the scanner
will display
pUlse OVERRNG
Quadrature
Output
Output set to quadrature will lag the other
pulse output by 90° (1/4 duty cycle) at
output frequency. Minimum 1 Hz
Timer Output
Programmable on and off time, repeating
cycle. Minimum period 0.1 second,
maximum 100,000 seconds.
Minimum pulse time 0.01 second,
maximum 10,000 seconds.

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
10
ScanView EX Programming
Software
System
Requirements
Windows® 7/8/10 (Windows 32-bit or
64-bit operating systems)
Communications
PDA8068 Meter-to-USB Adapter for
programming,
PDA7485-I RS-232 to RS-
485 Isolated
Converter (Cable not included),
PDA8485-I USB to RS-485 Isolated
Converter (Cable not included).
Protocol
Modbus RTU
Scanner Address
1-247
Baud Rate
1200 bps to 115,200 bps
Configuration
Configure one scanner at a time.
File format: Saved as “.mve".
Printing: Configuration can be printed.
Monitor file format: Saved as ".mcf".
Data Logging
Report
Saved as “.csv” file format.
The Monitor window is used for monitoring up to 16 process
variables; each is programmed individually to display information
in selected engineering units with custom tags.
The Display window is used for programming the upper
display, lower display, dwell times, PV display setup, math
display setup, and tank size indicator.
The Mode/PV Setup window is used for selecting master,
slave, or snooper modes and setting up from 1-16 PVs.
The Data Logging window is used to set the computer and
meter time/date, set the on-board data log set time or time
interval method, set PC data log intervals and time units, and
manual control of PC data log with start/stop buttons.
For detailed programming software instructions or to download
ScanView EX software, visit predig.com/scanview-ex.

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
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Product Ratings and Approvals
FM
Explosion-proof for use in:
Class I, Division 1, Groups B, C and D
Dust-ignition proof for use in:
Class II/III, Division 1, Groups E, F and G; T6
Flame-proof for use in:
Class I, Zone 1, AEx d Group IIC; T6
Protection by Enclosure:
Zone 21, AEx tb IIIC; T85°C
Ta = -40 to 75°C.
Enclosure: Type 4X, IP66.
Certificate number: 3040391
CSA
Explosion-proof for use in:
Class I, Division 1, Groups B, C and D
Dust-ignition proof for use in:
Class II/III, Division 1, Groups E, F and G; T6
Flame-proof for use in:
Zone 1, Ex d IIC T6
Ta = -40 to 75°C.
Enclosure: Type 4X & IP66/IP68.
Certificate number: 2325749
ATEX
II 2 G D. Flame-proof for use in:
Zone 1, Ex d IIC T6 Gb
Protection by Enclosure for use in:
Dust Atmospheres (Zone 21)
Ex tb IIIC T85°C Db IP68.
Ta = -40°C to +75°C
Certificate number: Sira 10ATEX1116X
IECEx
Flame-proof for use in:
Zone 1, Ex d IIC T6 Gb
Protection by Enclosure for use in:
Dust Atmospheres (Zone 21)
Ex tb IIIC T85°C Db IP68.
Ta = -40°C to +75°C
Certificate number: IECEx SIR 10.0056X
Special Conditions for Safe Use:
Use suitably certified and dimensioned cable entry
device and/or plug. The equipment shall be installed
such that the supply cable is protected from mechani-
cal damage. The cable shall not be subjected to ten-
sion or torque. If the cable is to be terminated within an
explosive atmosphere, then appropriate protection of
the free end of the cable shall be provided.
Year of Construction:
This information is contained within the serial number
with the first four digits representing the year and
month in the YYMM format.
For European Community:
The PD6830X must be installed in accordance with
the ATEX directive 2014/34/EU, and the product cer-
tificate Sira 10ATEX1116X.
Electromagnetic Compatibility
Emissions
EN 61326-1
Safety requirements for measure-
ment, control, and laboratory use –
Industrial Group 1 Class A ISM
emissions requirements
EN55022
Class A ITE emissions requirements
EN61000-6-4
Emissions for heavy industrial
environments - Generic
Radiated
Emissions
Class A
Immunity EN 61326-1 Measurement, control,
and laboratory use – Industrial
EN61000-6-2 Immunity for heavy
environments - Generic
ESD ±4 kV contact, ±8 kV air
RFI –
Amplitude
Modulated
80-1000 MHz @ 10 V/m,
1.4-2.0 GHz @ 3 V/m,
2.0-2.7 GHz @ 1 V/m,
80% AM (1 kHz)
EFT ±2 kV DC mains, ±1 kV other
Telco Surge ±1 kV
CRFI 3 V, 0.15-80 MHz, 1 kHz 80% AM
Power Frequency
Magnetic Field
30 A/m 70% V for 0.5 period
Safety Information
•Read complete instructions prior to installation and
operation of the scanner.
•Installation and service should be performed only
by trained service personnel. Service requiring
replacement of internal components must be
performed at the factory.
•Disconnect from supply before opening enclosure.
Keep cover tight while circuits are alive. Conduit
seals must be installed within 18" (450mm) of the
enclosure.
•Verify that the operating atmosphere of the meter
is consistent with the appropriate hazardous
locations certifications.
•If the scanner is installed in a high voltage
environment and a fault or installation error occurs,
high voltage may be present on any lead.

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
12
Installation
For Installation in USA:The PD6830X must be in-
stalled in accordance with the National Electrical
Code (NEC) NFPA 70.
For Installation in Canada:The PD6830X must be
installed in accordance with the Canadian Electrical
Code CSA 22.1.
For European Community: The PD6830X must be
installed in accordance with the ATEX directive
2014/34/EU and the product certificate Sira
10ATEX1116X.
•Installation and service should be performed only
by trained service personnel. Service requiring
replacement of internal components must be
performed at the factory.
•Disconnect from supply before opening
enclosure. Keep cover tight while circuits are
alive. Conduit seals must be installed within
18" (450mm) of the enclosure.
Wiring connectors are accessed by opening the
enclosure. To access electrical connectors, remove
the 2 captive screws, then disconnect the ribbon
cable from the display module and set the display
module aside.
Unpacking
Remove the scanner from box. Inspect the packaging
and contents for damage. Report damages, if any, to
the carrier.
If any part is missing or the scanner malfunctions,
please contact your supplier or the factory for
assistance.
Pre-Installed Conduit Plug
The PD6830X typically includes three ¾" NPT
threaded conduit openings and one ¾" NPT metal
conduit plug with 12 mm hex key fitting installed. Ad-
ditional conduit opening configurations and plugs may
be available; verify quantity and sizes on specific de-
vice labeling during installation. The pre-installed plug
and its installation are included in the hazardous area
approvals.
The conduit/stopping plug included in a typical
PD6830X has an internal 12 mm hexagonal socket
recess for removal.
•In hazardous areas, conduit and conduit/stopping
plugs require the application of non-setting
(solvent free) thread sealant. It is critical that all
relevant hazardous area guidelines be followed for
the installation or replacement of conduit or plugs.
Mounting
The PD6830X has two slotted mounting flanges that
may be used for pipe mounting or wall mounting.
Alternatively, the unit may be supported by the
conduit using the conduit holes provided.
Refer to Figure 1.
•Do not attempt to loosen or remove flange bolts
while the scanner is in service.
Dimensions
All units: Inches (mm)
Figure 1. Enclosure Dimensions – Front View
Figure 2. Enclosure Dimensions –
Side Cross Section View
3.35 (85.1)
2.25 (57.1)
(8.2)
5.25 (133.4)
(143.5)
5.65
0.32
3.35 (85.0)
4.15 (105.5)
3.22 (81.9) (123.5)
4.86

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
13
Cover Jam Screw
The cover jam screw should be properly installed
once the scanner has been wired and tested in a safe
environment. The cover jam screw is intended to
prevent the removal of the scanner cover in a
flameproof environment without the use of tools.
Using a M2 hex wrench, turn the screw clockwise until
the screw contacts the scanner. Turn the screw an
additional ¼ to ½ turn to secure the cover.
•Excess torque may damage the threads and/or
wrench.
Connections
To access the connectors, loosen the cover jam
screw (if tightened) with an M2 hex wrench, remove
the enclosure cover and unscrew the two captive
screws that fasten the display module into the enclo-
sure. Disconnect the ribbon cable and remove the
display module. RS-485 serial connections are made
to a removable terminal block on the back of the dis-
play module. Power and signal connections are made
to a barrier terminal connector in the base of the en-
closure. Grounding connections are made to the two
ground screws provided on the base – one internal
and one external. Use proper grounding techniques
for explosion-proof areas and observe all local and
national electric codes.
D+
RS-485 data B (non-inverting) connection
D-
RS-485 data A (inverting) connection
G
RS-485 shield ground connection
P+
DC Power positive terminal connection
COM
DC power supply input return/negative,
reset contact closure common
RST
Contact closure reset pull-up to 1.8 VDC
S+
Pulse input signal positive terminal
connection (Refer to LIM6830XPulse
for instructions).
S-
Pulse input signal negative terminal
connection (Refer to LIM6830XPulse
for instructions).
OC1+ Open collector output 1 positive terminal
OC1- Open collector output 1 negative terminal
OC2+
Open collector output 2 positive terminal
OC2- Open collector output 2 negative terminal
LP+
4-20 mA transmitter output DC power
positive terminal connection.
LP- 4-20 mA transmitter output DC power
negative terminal connection.
Refer to Figure 3and Figure 4for terminal positions.
•Observe all safety regulations. Electrical wiring
should be performed in accordance with all
agency requirements and applicable national,
state, and local codes to prevent damage to the
scanner and ensure personnel safety.
•Static electricity can damage sensitive
components.
•Observe safe handling precautions for
static-sensitive components.
•Use proper grounding procedures/codes.
•If the scanner is installed in a high voltage
environment and a fault or installation error
occurs, high voltage may be present on any lead
or terminal.
Figure 3. Connector Board Mounted in Base of
Enclosure
Figure 4. Connectors & Switches on Rear of Display
Module

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
14
Wiring Diagrams
DC Power Connection
DC power is wired to terminals P+ and COM as shown
in Figure 5. To maintain input isolation, a separate
power supply must be used to power the isolated
4-20 mA transmitter as shown in Figure 6.
Figure 5. DC Power Connections
4-20 mA Transmitter Output
Connections
Output connections are made to two terminals labeled
LP+ and LP-. Connect to an input device such as a
remote display or chart recorder as shown in Figure 6.
Figure 6. 4-20 mA Output Connections
RS-485 Signal Connections
The scanner includes a 3-wire RS-485 serial connec-
tion. The cabling used for an RS-485 serial communi-
cations network should always be a high quality cable
such as Belden 8162 or Alpha 6203C. A 3-wire sys-
tem requires two twisted pairs (the extra twisted pair
is needed for the signal ground).
Figure 7. RS-485 3-Wire Serial Connections
Figure 8. RS-485 5-Wire Serial Connections
Open Collector Output Connections
Open collector output 1 and 2 connections are made to
terminals labeled OC1+ and OC1-, and OC2+ and
OC2-. Connect the alarm or pulse input device as
shown in Figure 9.
Figure 9. Open Collector Output Connections
Power
Supply
COM RST
P+ S+ S-
LP- LP+
Power
Supply
4-20 mA Input
Device
ProtEX RS-485 DEVICE
D+
D-
G
DATA
DATA
GND
ProtEX
DO
DO
DI
DI
GND
RS-485 DEVICE
D+
D-
G
+
Alarm Indicator/
Pulse Counter
(e.g. PD6300)
-
5-30 VDC
150 mA MAX
P+ COM RST S+ S- OC1+ OC1- OC2+ OC2-
LP+LP-

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
15
Setup and Programming
Overview
Setup and programming is done through the infrared
through-window SafeTouch buttons, using the me-
chanical buttons when uncovered, or with ScanView
EX programming software. There are two slide
switches located on the display module. One switch is
used to lock or unlock the SafeTouch Buttons. The
other switch is used to configure the pulse input
(Refer to LIM6830XPulse for instructions).
ScanView EX Programming
Software
The fastest and easiest way to program the meter is using
the free ScanView EX programming software. This soft-
ware greatly simplifies the programming process and al-
lows the user to save configuration files for later use.
The ScanView EX software requires one of several
options to connect to a PC depending on the PC’s
hardware; The PDA8068 USB serial adapter,
PDA7485-I RS-232 to RS-485 converter, or the
PDA8485-I USB to RS-485 Isolated Converter to
connect the PC to the meter.
To download the ScanView EX programming
software, visit predig.com/scanview-ex.
SafeTouch Buttons
The PD6830X is equipped with four sensors that op-
erate as through-glass buttons so that it can be pro-
grammed and operated without removing the cover
(and exposing the electronics) in a hazardous area.
These buttons can be disabled for security by using
the THRU-GLASS BUTTONS switch and selecting
the OFF setting. This switch is located on the back of
the removable electronics module.
SafeTouch Button Operation
To actuate a button, press and remove one finger
to the glass directly over the marked button area.
Remove finger to at least 4 inches away from the
window in between button activations. SafeTouch
and mechanical buttons may be held to cycle through
menus or digits in place of repeatedly pushing a
button.
SafeTouch Power Save Mode
(Symbol shown on -2 decimal models only)
SafeTouch buttons enter a power saving mode
after three minutes of inactivity. This mode is
indicated by a power symbol ( ) appearing in the
lower right of the display. Only the MENU button is
monitored in this mode. To activate the SafeTouch
buttons, press and hold the menu button for up to
five seconds. The display will read AWAKE, and the
SafeTouch buttons will be fully enabled.
SafeTouch Disabled Mode
When the cover is removed, the four mechanical
buttons located next to the sensors may be used.
The sensors are disabled when a mechanical
button is pressed and will automatically be re-
enabled after 60 seconds of inactivity. The
SafeTouch power symbol ( ) will blink in the lower
right of the display if the buttons are disabled due
to a mechanical pushbutton being pressed.
SafeTouch Button Equalize Delay
The SafeTouch buttons are designed to constantly
recalibrate for ambient conditions. When the cover
position is changed, the cover is removed, or an
object is removed that was placed over the front
window, it may take a moment for the SafeTouch
buttons to recalibrate to the change in conditions.
Allow up to 2 minutes for the SafeTouch
buttons to recalibrate to new conditions in
these cases where the cover position was
changed, or the front window is being
unblocked.
•SafeTouch will not work if two or more buttons
are detected as being pressed simultaneously.
Be careful to avoid triggering multiple buttons or
reaching across one button location to press
another.

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
16
SafeTouch Button Tips and
Troubleshooting
The SafeTouch Buttons are designed to filter normal
levels of ambient interference and to protect against
false triggering, however it is recommended that the
SafeTouch Buttons be turned off (slide THRU-GLASS
BUTTONS switch to OFF) if there is an infrared inter-
ference source in line-of-sight to the display or if the
buttons are not needed.
SafeTouch Button Tips:
•To the extent possible, install the display facing
away from sunlight, windows, reflective
objects, and any sources of infrared
interference.
•Keep the glass window clean.
•Tighten the cover securely.
•Use a password to prevent tampering.
•If the cover has not been installed and secured
tightly, it may take a moment for the SafeTouch
buttons to properly self-calibrate when the
cover is tightened.
After all connections have been completed and veri-
fied, connect the ribbon cable to the display module,
fasten the display module to the base, install enclo-
sure cover, and then apply power.
SafeTouch Button Equalize Delay
The SafeTouch buttons are designed to constantly
recalibrate for ambient conditions. When the cover
position is changed, the cover is removed, or an
object is removed that was placed over the front
window, it may take a moment for the SafeTouch
buttons to recalibrate to the change in conditions.
Allow up to 2 minutes for the SafeTouch buttons to
recalibrate to new conditions in these cases where
the cover position was changed, or the front
window is being unblocked.

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
17
Buttons and Display
Decimal Display Model
Feet & Inches Display Model
Button Symbol Description
Menu / SafeTouch Awake
Previous PV or Right Arrow
Up Arrow or Next PV
Enter or Start / Pause Scanning
Decimal Display
Symbols (-2 Models) Description
HI
High Alarm
LO
Low Alarm
Settings Lockout Password
Enabled
SafeTouch Power
Save/Disable
Flashing: Temporarily
Disabled Due to Mechanical
Button
Feet & Inches Display
Symbols (-L Models) Description
FT
Feet
IN
Inches and Fractional Inches
F
Tank Full Indicator
E
Tank Empty Indicator
HI
High Alarm
LO
Low Alarm
Menu Button
•Hold the Menu SafeTouch button when in
power save mode (display will show ) to
awaken SafeTouch buttons.
•Press the Menu button to enter Programming
Mode.
•Press the Menu button during Programming
Mode to return to the previous menu
selections.
•Hold the Menu button for 1.5 seconds at any
time to exit Programming Mode and return to
Run Mode.
•Press and hold the Menu button for 3 seconds
to access the Advanced Features of the
scanner.
Right / Previous Button
•Press Previous to manually display the
previous PV or input display.
•Press the Right arrow button in programming
mode to move to the next digit or decimal
position.
•Press the Right arrow button in programming
mode to go backward through most selection
menus.
Up / Next Button
•Press Next to manually display the next PV or
input display.
•Press the Up arrow button in programming
mode to scroll forward through the menus,
decimal point, or to increment the value of a
digit.
Enter / Scan Button
•Press Scan to pause automatic scanning.
•Press Scan to resume automatic scanning
when paused.
•Press the Enter button in programming mode
to access a menu or to accept a setting.
MENU
SCAN
NEXT
PREV

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
18
Setting Numeric Values
The numeric values are set using the Right and Up
arrow buttons. Press Right arrow to select next digit
and Up arrow to increment digit.
The digit being changed blinks.
Press the Enter button, at any time, to accept a set-
ting or Menu button to exit without saving changes.
The decimal point is set using the Right or Up arrow
button in the Setup, Decimal Point menu.
Setting Alphanumeric Labels
(LABEL)
Fully alphanumeric values are set using the Right
button to select the digit, the Up and Right arrow but-
tons to select the digit reading, and the Enter button
to confirm and select the next digit.
Menus using this entering method include tags and
custom units. After selecting the digit, and using the
Up and Right arrows to modify the digit, the display
will read CHAR.
Press Enter to confirm the new digit and proceed to
the next digit.
The digit being changed blinks.
Press the Menu button to exit without saving changes.

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
19
Main Menu
Display Functions & Messages
The scanner displays various functions and messag-
es during setup, programming, and operation. The
following table shows the main menu MODE, SETUP,
and COMM menu functions and messages in the order
they appear in the menu. Functions and messages
that appear in the Advanced menu can be found in
the Advanced Menu section on page 35.
Display
Parameter
Action/Setting
MODE Mode Enter Mode menu
MASTER Master Mode Select Master mode
PV NUM PV Number Enter the Modbus PV
configuration menu
PV 1 PV 1 – PV 16 Enter PV1 to PV16
configuration menus
ENABLE Enable Enable the Modbus
PV
SLAVEID Slave ID Enter the slave
Modbus ID
FUNCODE Function Code Set the Modbus
function code
REG NUM Register
Number
Enter the slave
register number
DATATYP Data Type Set the data type
FLOAT Float Float data type
SHORT Short Short integer data
type
LONG Long Long integer data
type
BINARY
Binary Binary integer type
BCD BCD Binary coded
decimal integer type
UNSIGND
Unsigned Unsigned integer
type
SIGNED
Signed Signed integer type
BYTE Byte Select the byte
format
1234 1243 Big endian
4321 4321 Little endian
2143 2143 Big endian with byte
swap
3412 3412 Little endian with
byte swap
DISABLE Disable Disable the Modbus
PV
T POLL Poll Time Set the Modbus PV
poll time
Display Parameter Action/Setting
TIMEOUT Response
Timeout
Set Modbus
communication
response timeout
RETRIES Retries Set number of retires
before display a PV
communication error
SLAVE Slave Select Slave mode
PV NUM PV Number Enter the Modbus PV
configuration menu
PV 1 PV 1 – PV 16 Enter PV1 to PV16
configuration menus
ENABLE Enable Enable the Modbus
PV
DISABLE Disable Disable the Modbus
PV
TIMEOUT Response
Timeout
Set Modbus
response error time
SNOOPER Snooper Mode Select Snooper
mode
PV NUM PV Number Enter the Modbus PV
configuration menu
T RESP Response Time Set Modbus
response error time
SETUP Setup Menu Enter Setup menu
DISPLAY Display Enter the Display
menu
TOPDSP Top Display Set the function of
the top display
PV PV Display Modbus PV
PV-U PV & Units Display Modbus PV
and units
TAG-PV Tag & PV Display tag and
Modbus PV
TG-PV-U Tag, PV, & Units Display tag, Modbus
PV, and units
BOTDSP Bottom Display Set the function of
the bottom display
TAG Tag Display tags
TAG-U Tag & Units Display tags and
units
UNITS Units Display units
PV PV Display Modbus PV
TG-PV-U Tag, PV, & Units Display tag, Modbus
PV, and units
OFF Off Turn off display
PVSETUP PV Setup Enter the PV Setup
menu
PV-1 PV-1 to PV-16 Select PV1 to PV16
FORMAT Format Enter PV display
format

PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
20
Display Parameter Action/Setting
TAG Tag Enter to edit PV tag
UNITS Units Enter to edit PV units
DISP.DP Display Decimal
Point
Set the PV display
decimal point
Note: Not available
on Ft-In models.
FLOAT.DP Float Decimal
Point
Set the float decimal
point location (if PV
is float data type
only)
Note: Not available
on Ft-In models.
SCALE Scale Select the PV display
scaling: factor, linear
2-point, or multi-point
FACTOR Conversion
factor
Conversion factor
scaling
LINEAR Linear Linear scaling
MP-SCAL Multipoint
Scaling
Multipoint scaling for
PV1
MATH Math Enter Math menu
(Will only appear if at
least one math
channel is enabled)
CV 1 CV1 to CV4 Select math channel
to configure CV 1 to
CV4
FORMAT Format Enter CV display
format
TAG Tag Enter the CV tag
UNITS Units Enter the CV units
Disp.DP Display Decimal
Point
Set the CV display
decimal point
TANKSZ Tank Size Enter tank level
indicator full value (in
feet for Ft & In
version only)
T-TAG Tag Time Enter tag display
time
T-UNITS Units Time Enter unit display
time
T-SCAN Scan Time Enter scan cycle time
(e.g. PV dwell time)
PULSE.IN Input Refer to pulse input
manual
COMM Communications Enter the
Communications
menu
SCAN ID Scanner ID Enter the scanner’s
Modbus ID (used if
setup as a slave)
BAUD Baud Rate Select baud rate
Display Parameter Action/Setting
TXDELAY Transmit Delay Enter the transmit
delay
PARITY Parity Select parity mode
EVEN Even Even parity
ODD Odd Odd parity
NONE 1 None, 1 Stop Bit No parity, 1 stop bit
NONE2 None, 2 Stop
Bits
No parity, 2 stop bits