YOKOGAWA 800 plus Use and care manual

Modbus Protocol
COMMUNICATIONS MANUAL
800Plus
Universal Digital Panel Meters, Counters,
Timers and Transmitters, Series 2
No ith Ethernet
2 Dart Rd, Ne nan, GA 30265, USA
Phone: [phone], Fax: [phone]
http:// .yca.com

- 2
-
1. TABLE OF CONTENTS
1. TABLE OF CONTENTS ....................................................................................................... 2
2. INTRODUCTION, MODBUS PROTOCOL ............................................................................ 3
3. MODBUS CONNECTION EXAMPLES ................................................................................. 4
4. JUMPER SETTINGS & FIELD WIRING .............................................................................. 5
5. PROGRAMMING YOUR MODBUS DEVICE ........................................................................
6. MODBUS PROTOCOL IMPLEMENTATION ........................................................................ 10
1. General .................................................................................................................. 10
2. Framing .................................................................................................................. 10
3. Electrical Interface ................................................................................................. 11
4. Parameters Selectable via Instrument Setup (IS) Software ................................... 11
5. Parameters Selectable via Front Panel Meter Setup ............................................... 11
6. Supported Function Codes .................................................................................... 11
7. Register Numbers vs. Meter Addresses ................................................................. 11
8. Supported Exception Response Codes .................................................................. 14
. Message Formatting .............................................................................................. 14
10. Message Examples for Device Address= 01, No Parity .......................................... 15
11. Data Types Internal Registers ................................................................................ 16
12. DPM & Analog Input Transmitter Internal Register Addresses ............................. 17
13. Counter / Timer Internal Register Addresses ......................................................... 23
7. WARRANTY ...................................................................................................................... 32

- 3
-
2. INTRODUCTION, MODBUS PROTOCOL
The Modbus Protocol is an industry-standard communications protocol that is selectable with all
our serial communications signal options: Ethernet, USB, RS485 and RS232. It is implemented by
the microcomputer on the main board and is compliant with Modbus RTU or ASCII transmission
modes (software selectable), as specified in Modbus over Serial Line Specification V1.0 (2002).
Digital panel meters, counters and timers require a plug-in option board for Modbus communi-
cations. This board can be any of the following:
• RS232 board
• RS485 board with dual RJ11 jacks.
• RS485 Modbus board with dual RJ45 jacks
• USB board
• USB-to-RS485 converter board
• Ethernet board
• Ethernet-to-RS485 converter board
Our RS485 and Modbus RS485 boards are both Modbus compliant, but the RS485 board uses
RJ11 jacks while the Modbus board uses RJ45 jacks as recommended in the Modbus Specifi-
cation. With either board, the two jacks are wired in parallel to allow daisy chaining of meters with
no need for a hub.
Our USB to RS485 and Ethernet to RS485 converter boards allow the host meter to function as a
normal meter, be connected to a host computer or Ethernet local area network (LAN), and also act
as the device server for an RS485 network with up to 31 other meters equipped with an RS485
board. These meters can then be daisy-chained using readily available, straight-through 6-wire
data cables (not 4-wire telephone cables or crossover cables). Use repeaters to increase the
number of addressable meters.
Our DIN rail transmitters come with a user-selectable Ethernet or RS232/RS485 I/O port in addi-
tion to a scalable 4-20 mA output, which is standard.
Our DIN rail Ethernet to RS485 device server provides an RJ45 jack for connection to the
Ethernet, an RJ11 jack to support an RS485 network of meters, plus screw terminals to support
an RS485 network of DIN-rail transmitters via a set of 3 or 5 parallel wires (half- or full-duplex).
The Modbus TCP
The Modbus TCPThe Modbus TCP
The Modbus TCP protocol is seamlessly converted by our Ethernet Nodes to Modbus RTU or
Modbus ASCII for communication with meters and transmitters on an RS485 bus. Please see our
Ethernet Manual for more information.
The Custom ASCII Protocol is a software-selectable alternative to the Modbus Protocol. It also
allows device addressing of up to 31 devices. It is less complex than the Modbus protocol, but is
limited to use with our devices. Please see our Custom ASCII Protocol Communications Manual.

- 4
-
3. MODBUS CONNECTION EXAMPLESS

- 5
-
4. JUMPER SETTINGS & FIELD WIRING
1. SAFETY WARNINGS
Digital panel meters, counters, timers and transmitters may be powered with AC (mains) from
85-264 Vac or 5-300 Vdc with standard high voltage power, or 12-34V ac or 10-48 Vdc with the
low voltage power supply option. To avoid the possibility of electrical shock or damaging short
circuits, always unplug the device before opening the case. Please refer to the respective device
manuals for full safety information and instruction on how to open the case. Signal wiring changes
external to the case can be made safely while the units are under power.
2. JUMPERS ON SERIAL METER BOARDS

- 6
-
USB Board &
Basic Ethernet Board
No jumpers needed.
RS232 Board
e - Normal operation.
f - Slave display to RS232 from another meter.
g - Pull-up resistor on RTS line.
Note: Board is shipped ith jumpers e and g installed
RS485-Modbus Board, Full Duplex Operation
b & e - Bias jumpers should be installed on 1 board.
a & d - Installed on last meter in long cable run.
RS485-Modbus Board, Half Duplex Operation
b & e - bias jumpers installed on 1 board.
c & f - installed for half duplex operation.
a - installed on last meter in line ith long cable runs.
Note: Board is shipped ith no jumpers installed.
Modbus
b
a
cd e
RJ45
RJ45
f
RS485 Board, Full Duplex Operation
b & d - Installed on last meter in long cable run.
RS485 Board, Half Duplex Operation
a & c - Installed for half duplex operation.
d - Installed on last meter in line ith long cable runs.
Note: Board is shipped ith no jumpers installed.
Ethernet-to-RS485 Converter Board
& USB-to-RS485 Converter Board
Full Duplex Operation
No jumpers for short cable runs.
Add b & d for long cable runs.
Half Duplex Operation
a & c for short cable runs.
d - Installed on last meter in line ith long cable runs.
3. CONNECTOR WIRING, SERIAL BOARD TO COMPUTER

- 7
-
N/C
ISO GND
RX
TX
RTS
N/C
GND
TX
RX
RTS
RS232 INTERFACE Computer
6
5
4
3
2
1
ISO GND
BRX
ARX
ATX
BTX
ISO GND
GND
BTX
ATX
ARX
BRX
GND
RS485 INTERFACE - FULL DUPLEX
GND
ATX / ARX
BTX / BRX
GND
RS485 INTERFACE - HALF DUPLEX
1
2
3
4
5
6
7
8
(A') RXD0 -
(B') RXD1 +
(B) TXD1 *
(A) TXD0 -
ISO GND
TXD0
TXD1
RXD1
RXD0
GND
RS485-MODBUS - FULL DUPLEX RS485-MODBUS - HALF DUPLEX
(B) TX / RXD1
(A) TX / RXD0
ISO GND
(B) TX/RXD1
(A) TX/RXD0
GND
6
5
4
3
2
1
6
5
4
3
2
1
ISO GND
ATX / ARX
BTX / BRX
ISO GND
1
2
3
4
5
6
7
8
4. TRANSMITTER CONNECTOR WIRING
Signal
conditioner
board
P3 Solid
state relays P1 Po er
input
P6 Signal
input &
excitation
output
P2 Serial
data I/O
P4 Analog
output
1
2
3
4
5
6 RS485 RS232
6 N/C TX
5 ARX RX
4 ATX NC
3 GND GND
2 BRX GND
1 BTX N/C
3 Po er GND
2 AC neutral or -DC
1 AC high or +DC
See belo
for different
signal types
Analog out - 1
Analog out + 2
AL2 1
AL2 2
AL1 3
AL1 4
5
4
3
2
1
9
8
7
6
RS232 cable ith
rear vie of DB9
connector to PC

- 8
-
E1
E4 E6
E3
E2
a
b
c ab
ab
cd
a
b
c
d
Serial Signal
Duplex
Jumpers
Termination Resistor*
RS485 Full None E6 a = Transmit
E6 c = Receive
Half E6 b + d** E6 c
RS232 Full None None
Serial Signal
Duplex
Jumpers
Termination Resistor*
RS485 Full None E6 a = Transmit
E6 c = Receive
Half E6 b + d** E6 c
RS232 Full None None
* The termination resistor jumper settings should only be selected if the transmitter is the last
device on an RS485 line longer than 200 feet (60 m).
** Attempting to draw more than the rated current will shut down the output.
To reset communications to 600 baud, command mode, Custom ASCII protocol, and Address 1,
place a jumper at E1 and power up the transmitter.
Analog Output
Jumpers
Current E2 a + d
Voltage E2 b + c
Excitation Output*
Jumpers
5V, 100 mA E3 a + c; E4 a
10V, 120 mA E3 a + c; E4 b
24V, 50 mA E3 b, E4 none
* The termination resistor jumper
settings should only be selected
if the transmitter is the last device
on an RS485 line longer than 200
feet (60 m).
** Or jumper external BTX to BRX
and ATX to ARX (same effect as
internal jumpers).

- 9
-
5. PROGRAMMING YOUR MODBUS DEVICE
OVERVIEW
Modbus digital panel meters, counters, timers and transmitters are easily programmed via their
serial port using Windows-based Instrument Setup (IS) software, which provides a graphical
user interface and is available at no charge. This software allows uploading, editing, down-
loading and saving of setup data, execution of commands under computer control, listing,
plotting and graphing of data, and computer prompted calibration. Digital panel meters,
counters and timers can also be programmed via their 4-key front panel as explained in their
respective manuals; however, online programming is easier. For Ethernet, please see our
separate Ethernet Manual.
GETTING STARTED WITH INSTRUMENT SETUP SOFTWARE
To install IS software, download the file instrument.exe from our website, double-click on the
file name to extract three files, double-click on setup.exe, and follow the prompts. To launch IS
software, press Start => Programs => IS2 => IS2. Establish communications by selecting
matching settings between the instrument and PC, and click on Establish. Once communica-
tions have been established, click on Main Menu.
The best way to learn IS software is to experiment with it. From the Main Menu, click on Get
Setup to retrieve (or get) the existing setup data from your device. Click on View = > Setup to
bring up screens which allow you to edit the setup file using pull-down menus and other
selection tools. You can save your file to disk by clicking on File = > Save Setup. You can
download (or put) your edited file into the device by clicking on Put Setup. Programmable
items will only be displayed if the appropriate hardware has been detected, such as the dual
relay option for meters. Pressing the F1 key at any time will bring up detailed help information.
An analog output is defined in two steps. The input to the device is first scaled to a digital
reading in engineering units, and this reading is then scaled to the analog output. The digital
reading is also used for setpoint control and can be transmitted as serial data.
ADDITIONAL FEATURES
• The Commands pull down menu allows you to execute certain functions by using your
computer mouse. The Comman s pull-down menu will be grayed out unless a Get Setup has
been executed.
• The Readings pull down menu provides three formats to display input data on your PC
monitor. In all formats, use the Pause and Continue buttons to control the timing of data
collection, then press Print for a hardcopy on your PC printer. List presents the latest digital
readings in a 20-row by 10-column table. Plot generates a plot of digital readings vs. time in
seconds, like an oscilloscope. Graph generates a histogram, where the horizontal axis is the
reading and the vertical axis is the number of readings.

- 10
-
6. MODBUS PROTOCOL IMPLEMENTATION
1. GENERAL
The Modbus capability conforms to the Modbus over Serial Line Specification & Implemen-
tation guide, V1.0. Both the Modbus RTU and Modbus ASCII protocols are implemented:
Modbus RTU
Baud Rate ........... .............................................. 300, 600, 1200, 2400, 4800, 600 or 1 200
Data Format ....... ........................ 1 start bit, 8 data bits, 1 parity bit, 1 stop bit (11 bits total)
Parity .................. ............................. None, Odd, Even (if None, then 2 Stop bits for 11 total)
Address .............. ............................................... 0 for broadcast, 1-247 for individual meters
Modbus ASCII
Baud Rate ........... .............................................. 300, 600, 1200, 2400, 4800, 600 or 1 200
Data Format ....... ...................... 1 Start bit, 7 Data bits, 1 Parity bit, 1 Stop bit (10 bits total)
Parity .................. ............................. None, Odd, Even (if None, then 2 Stop bits for 10 total)
Address .............. ............................................... 0 for broadcast, 1-247 for individual meters
2. FRAMING
Modbus RTU
Message frames are separated by a silent interval of at least 3.5 character times. If a silent
interval of more than 1.5 character times occurs between two characters of the message frame,
the message frame is considered incomplete and is discarded. Frame Check = 16 bit CRC of the
complete message excluding CRC characters.
Modbus ASCII
The message begins immediately following a colon (:) and ends just before a Carriage Return/
Line Feed (CRLF). All message characters are hexadecimal 0- , A-F (ASCII coded). The system
allowable time interval between characters may be set to 1, 3, 5 or 10 seconds. Frame Check =
1 byte (2 hexadecimal characters) LRC of the message excluding the initial colon (:) and trailing
LRC and CRLF characters.
3. ELECTRICAL INTERFACE
Four-wire (plus common) full-duplex or two-wire (plus common) half-duplex RS485 signal
levels are jumper selectable for digital panel meters, counters and timers. A polarization
resistor and termination resistor are also jumper selectable. In case of a long line (greater then
500 ft) to the first device, a termination resistor should be selected for the first device. In case
of a long line length (greater then 500 ft) between the first and last devices, a termination
resistor should be selected for the first and last devices. Never add termination resistors to
more than two devices on the same line. A two-wire, half-duplex RS485 signal level is jumper
selectable for transmitters.

- 11
-
4. PARAMETERS SELECTABLE VIA INSTRUMENT SETUP (IS) SOFTWARE
Serial Protocol .................................................. Custom ASCII, Modbus RTU, Modbus ASCII
Modbus ASCII Gap Timeout .......................................................... 1 sec, 3 sec, 5 sec, 10 sec
Baud Rate ..............................................................300, 600, 1200, 2400, 4800, 600, 1 200
Parity ............................... No parity, 2 stop bits; odd parity,1 stop bit; even parity, 1 stop bit
Device Address ......................................................................................................... 0 to 247
5. PARAMETERS SELECTABLE VIA FRONT PANEL METER SETUP
The two menu items related specifically to Modbus setup are SEr_4 and Addr.
SEr_4
Serial Comm 4
0
00
Modbus ASCII Gap Timeout
0
00
0 1 Sec 2
22
2 5 Sec
1
11
1 3 Sec 3
33
3 10 Sec
0
0
0
Serial Protocol
0
Customl ASCII (Non-Modbus)
1 Modbus RTU
2
22
2 Modbus ASCII
00
0
Parity
0
No Parity, 2 or more stop bits
1 Odd Parity, 1 or more stop bits
2 Even Parity, 1 or more stop bits
Addr
000
Meter Address Set to desired address 1-247
The baud rate is set in SEr_1 per the Meter manual. The selection of Modbus RTU or
Modbus ASCII in SEr_4 above overrides any LF or Command Mode selections that have
been made, since they are determined by the Modbus protocol.
6. SUPPORTED FUNCTION CODES
FC03: Read Holding Registers. Reads internal registers containing setup parameters
(Scale, Offset, Setpoints, etc.)
FC04: Read Input Registers. Reads measurement values and alarm status
FC05: Write Single Coil. Action command to device
FC08: Diagnostics. Checks communications between Master and Slave.
FC10: Write Multiple Registers (FC10 = 16 dec). Writes internal registers containing
setup parameters (Scale, Offset, Setpoints, etc.)
7. REGISTER NUMBERS VS. METER ADDRESSES
Some Master devices (e.g., Modicon) require that the desired Register Number and not the
Register Address be entered. The Register Number is 1 higher than the Register Address.
For entry to these devices, add 1 to the Register Address shown in the tables below. The
Register Address shown will then be output from these devices.

- 12
-
FC04: Read Input Registers
Reads measurement values and alarm status. Returns values in M31 or 2C32 format without
decimal point (see Sec 11, p 16). The displayed system decimal point can be read with FC03 at
addr 0057. Use only high word
wordword
word Starting Register Addresses and an even number of Registers.
Register Address
Meter or Analog Input
Transmitter Response
(M31 format)
Counter, Timer, or Pulse Input
Transmitter Response
(2C32 format)
Base 1
Std addr.
Base 0
PLC addr.
00 01
00 02
00 03
00 04
00 05
00 06
00 07
00 08
00 0
00 0A
00 0B
00 0C
00 02
00 03
00 04
00 05
00 06
00 07
00 08
00 0
00 0A
00 0B
00 0C
00 0D
Hi word of Alarm status
Lo word of Alarm status
Hi word of Measurement value *
Lo word of Measurement value *
Hi word of Peak value
Lo word of Peak value
Hi word of Valley value **
Lo word of Valley value **
N/A
N/A
N/A
N/A
Hi word of Alarm status
Lo word of Alarm status
Hi word of Item 1 value
Lo word of Item 1 value
Hi word of Peak value
Lo word of Peak value
Hi word of Valley value
Lo word of Valley value
Hi word of Item 2 value
Lo word of Item 2 value
Hi word of Item 3 value
Lo word of Item 3 value
* Net value for Scale Meter. ** Gross value for Scale Meter.
FC05: Write Single Coil: Action command to device
Output Address
Output
Value Action Command
Base 1
Bas
e 0
00 01
00 02
00 03
00 04
00 05
00 06
00 07
00 08
00 0
00 0A
00 0B
00 0D
00 0E
00 0F
00 10
00 02
00 03
00 04
00 05
00 06
00 07
00 08
00 0
00 0A
00 0B
00 0C
00 0E
00 0F
00 10
00 11
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
Device Reset (No Response)
Function Reset (Peak, Valley, latched alarms)
Latched Alarm Reset (only)
Peak Reset
Valley Reset
Remote Display Reset (Counters in Remote Display Mode)
Display Item 1 (Meters, Counters, Timers)
Display Item 2 (Counters, Timers)
Display Item 3 (Counters, Timers)
Display Peak (Meters, Counters, Timers)
Display Valley (Meters except Weight, Counters, Timers)
Meter Hold (output value = 00 00 resets Meter Hold)
Blank Display (output value = 00 00 resets Display Blank)
Activate External Input A (output value = 00 00 deactivates)
Activate External Input B (output value = 00 00 deactivates)

- 13
-
FC08: Diagnostics
Checks communications between the Master and Slave, and returns the count in the Modbus
Slave counters (which are reset when the meter is reset).
Hex Sub
Function
Code
Data
Sent
Response
Data Description
00 00 Any Same Returns Query Data (N x 2 bytes). Echo Request.
00 01
FF 00
00 00
FF 00
00 00
Restarts Communications. If in the Listen-Only mode,
no response occurs. Takes Slave out of the Listen-
Only mode and one of the following:
— Clears communications event counters.
— Does not clear communications event counters.
00 04 00 00 None Forces Listen-Only. All addressed and broadcast
Messages are monitored and counters are incre-
mented, but no action is taken or response sent. Only
Sub-Function 00 01 causes removal of this Listen-
Only state.
00 0A 00 00 00 00 Clears all Modbus slave counters.
00 0B 00 00 Total
Message
Count
Returns total number of messages detected on the
bus, including those not addressed to this Slave.
Excludes bad LRC/CRC, parity error or length < 3.
00 0C 00 00 Checksum
Error Count
Returns total number of messages with bad LRC/
CRC, parity or length < 3 errors detected on the bus
including those not addressed to the Slave.
00 0D 00 00 Exception
Error Count
Returns total number of Exception responses
returned by the Addressed Slave or that would have
been returned if not a broadcast message or if the
Slave was not in a Listen-Only mode.
00 0E 00 00 Slave
Message
Count
Returns total number of messages, either broadcast
or addressed to the Slave. Excludes bad LRC/CRC,
parity or length < 3 errors.
00 0F 00 00 No
Response
Count
Returns total number of messages, either broadcast
or addressed to the Slave, for which Slave has
returned No Response, neither a normal response nor
an exception response. Excludes bad LRC/CRC, parity
or length < 3 errors.
00 11 00 00 Slave Busy Returns total number of Exception Code 6 (Slave
Busy) responses.

- 14
-
8. SUPPORTED EXCEPTION RESPONSE CODES
Code
Name
Error Description
01 Illegal Function Illegal Function Code for this Slave. Only hex Function
Codes 03, 04, 05, 08, 10 (dec 16) are allowed.
02 Illegal Data Address Illegal Register Address for this Slave and/or Register
Length.
03 Illegal Data Value Illegal data value or data length for the Modbus protocol.
04 Slave Device Failure Slave device failure (eg. Device set for external gate).
9. MESSAGE FORMATTING
MA = Meter Address DD = Data (Hex) CL = CRC Lo Byte
FC = Function Code WW = Data (On/Off) CH = CRC Hi Byte
RA = Register Address SF = Sub-Function CR = Carriage Return
NR = Number of Registers EC = Error Code LF = Line Feed
NB = Number of bytes LRC = ASCII Checksum
Modbus RTU Format
FC Action > 3.5
Char
Byte Number
1
2
3
4
5
6
7
8
9
10
11
03
03
Request
Response
NoTx
NoTx
MA
MA
FC
FC
RA
NB
RA
DD*
NR
DD*
NR
CL
CL
CH
CH
04
04
Request
Response
NoTx
NoTx
MA
MA
FC
FC
RA
NB
RA
DD*
NR
DD*
NR
CL
CL
CH
CH
05
05
Request
Response
NoTx
NoTx
MA
MA
FC
FC
RA
RA
RA
RA
WW
WW
WW
WW
CL
CL
CH
CH
08
08
Request
Response
NoTx
NoTx
MA
MA
FC
FC
SF
SF
SF
SF
WW
DD
WW
DD
CL
CL
CH
CH
10
10
Request
Response
NoTx
NoTx
MA
MA
FC
FC
RA
RA
RA
RA
NR
NR
NR
NR
NB
CL
DD*
CH
DD* CL CH
Exception
Response
NoTx MA FC
+80
EC CL CH
DD* = (DD DD) times NR (Number of Registers)
Modbus ASCII Format
Except for the colon, CR and LF, each column is 2 hex character bytes.
DD* = (DD DD) times NR (Number of Registers)

- 15
-
FC Action
Column Number
1
2
3
4
5
6
7
8
9
10
11
12
13
03
03
Request
Response
:
:
MA
MA
FC
FC
RA
NB
RA
DD*
NR
DD*
NR
LRC
LRC
CR
CR
LF
LF
04
04
Request
Response
:
:
MA
MA
FC
FC
RA
NB
RA
DD*
NR
DD*
NR
LRC
LRC
CR
CR
LF
LF
05
05
Request
Response
:
:
MA
MA
FC
FC
RA
RA
RA
RA
WW
WW
WW
WW
LRC
LRC
CR
CR
LF
LF
08
08
Request
Response
:
:
MA
MA
FC
FC
SF
SF
SF
SF
WW
DD*
WW
DD*
LRC
LRC
CR
CR
LF
LF
10
10
Request
Response
:
:
MA
MA
FC
FC
RA
RA
RA
RA
NR
NR
NR
NR
NB
LRC
DD*
CR
DD*
LF
LRC CR LF
Exception
Response
: MA FC
+80
EC LRC CR LF
10. MESSAGE EXAMPLES FOR DEVICE ADDRESS = 01, NO PARITY
Example Action Modbus RTU Modbus ASCII
Ser_4 = 010 Addr = 001
Ser_4 = 020 Addr = 001
Restart Com-
munications*
Request
Response
010800010000
B1CB
010800010000B1CB
:010800010000
F6
crlf
:010800010000F6crlf
Meter Reset Request
Response
01050001FF00
DDFA
None
:01050001FF00
FA
crlf
None
Digital Reading
= +25.18
Request
Response
010400030002
81CB
01040400000 D67C4A
:010400030002
F6
crlf
:01040400000 D618crlf
Write Setpoint
1 = +37.00
Request
Response
0110000100020400000E74
3624
0110000100021008
:0110000100020400000E74
66
crlf
:011000010002ECcrlf
Read Setpoint 1
= +37.00
Request
Response
010300010002
95CB
01030400000E74FE74
:010300010002
F9
crlf
:01030400000E7476crlf
Send -12.34 to
Remote Display
or LTS **
First send decimal point, address 0057 as 00 03.
Request
Response
0110006 000204FFFFFB2E
F6E5
0110006 000291D4
:0110006 000204FFFFFB2E
59
crlf
:0110006 000284crlf
* Suggested as first message after power-up. If device is in Listen-Only mode, no response is
returned.
** 1234 decimal = 000004D2 hex. -1234 = FF FF FB 2E in 4-byte 2’s complement hex. Decimal point
is ignored.
RTU: Bolded last 4 characters indicate the CRC (added automatically by the device).
ASCII: Bolded last 2 characters indicate the LRC ((added automatically by the device).

- 16
-
Because the Counter/Timer can provide up to 3 display items during normal operation, it can
be used to provide additional features when used as a Remote Display. It is possible to send
Remote Data to Item 3 using addresses 006B,C or 006D,E. If the Counter/Timer is set up with
the "Source" menu item set to Item 3, it will make alarm comparisons to its Setpoints using the
Remote Data. Likewise, the Analog Output will respond to the Remote Data if "AnSEt" selects
Item 3 for the Analog Output source and the Display mode (Config Dig 3 = 7).
Address 006 ,A sends Remote Data to the display only (any Display mode).
Address 006B,C sends Remote Data to Item 3 only for Alarms and/or Analog Out.
Address 006D,E sends Remote Data to both the display and Item 3.
11. DATA TYPES INTERNAL REGISTERS
S = Sign Bit, 0 = Positive, 1 = Negative.
DDD = Decimal Point XXXXXX. = 1 (Magnitude x 10^0)
XXXXX.X = 2 (Magnitude x 10^-1)
XXXX.XX = 3 (Magnitude x 10^-2)
XXX.XXX = 4 (Magnitude x 10^-3)
XX.XXXX = 5 (Magnitude x 10^-4)
X.XXXXX = 6 (Magnitude x 10^-5)
C = Bits of 2's Complement Binary Value
M = Bits of Positive Binary Magnitude
B = Bits of Configuration Data
For Modbus RTU, each data character consists of 8 bits (or 1 byte).
For Modbus ASCII, each data character consists of 4 bits (or 1 hexadecimal nibble).
Data characters are sent most significant first, lease significant last.
2C32 Two's Complement (4 bytes)
Hi Word (Register) Lo Word (Register) .
CCCC CCCC CCCC CCCC CCCC CCCC CCCC CCCC
M32 Binary Magnitude (4 bytes)
Hi Word (Register) Lo Word (Register) .
MMMM MMMM MMMM MMMM MMMM MMMM MMMM MMMM
M31 Sign + Binary Magnitude (4 bytes)
Hi Word (Register) Lo Word (Register) .
SMMM MMMM MMMM MMMM MMMM MMMM MMMM MMMM
M48 Binary Magnitude (6 bytes
Hi Word (Register) Mid Word (Register) Lo Word (Register) .
XXXX XXXX MMMM MMMM MMMM MMMM MMMM MMMM MMMM MMMM MMMM MMMM
Ignore XXXX XXXX - Use LS 5-byte result
N
NN
Note:
ote:ote:
ote: Meters and the
analog input transmitter
only have 5 digits and 5
decimal points.

- 17
-
B16 Bit Significance M16 Binary Magnitude M15 Sign + Binary Magnitude
Hi Byte Lo Byte . Hi Byte Lo Byte . Hi Byte Lo Byte .
0000 0000 BBBB BBBB XXXX XXXX XXXX XXXX SXXX XXXX XXXX XXXX
7654 3210
12. METER & ANALOG INPUT TRANSMITTER INTERNAL REGISTER ADDRESSES
Data Types as shown: FC03 READ and FC10 (dec16) WRITE
Use high word starting Register Addresses and an even number of Registers.
Register Address
Register Name Data
Type
Scaling &
Dec Point
Dec
*
Hex*
1 0001 Setpoint 1 (Hi word) 2C32 Dec pt same
as displayed
2 0002 Setpoint 1 (Lo word)
3 0003 Setpoint 2 (Hi word) 2C32 Dec pt same
as displayed
4 0004 Setpoint 2 (Lo word)
5 0005 Setpoint 3 (Hi word) (not for Scale Meter) 2C32 Dec pt same
as displayed
6 0006 Setpoint 3 (Lo word) (not for Scale Meter)
7 0007 Setpoint 4 (Hi word) (not for Scale Meter) 2C32 Dec pt same
as displayed
8 0008 Setpoint 4 (Lo word) (not for Scale Meter)
000 Scale (Hi word) 2C32 ** See
footnote
10 000A Scale (Low word)
11 000B Offset (Hi word) 2C32 Dec pt same
as displayed
12 000C Offset (Low word)
17 0011 Lo In (Hi word) 2C32 Uses dec pt
of input range
18 0012 Lo In (Low word)
1 0013 Lo Rd (Hi word) 2C32 Dec pt same
as displayed
20 0014 Lo Rd (Low word)
21 0015 Hi In (Hi word) 2C32 Uses dec pt
of input range
22 0016 Hi In (Low word)
23 0017 Hi Rd (Hi word) 2C32 Dec pt same
as displayed
24 0018 Hi Rd (Low word)
25 001 Rd0 (Hi word) (tare for Scale Meter) 2C32 Dec pt same
as displayed
26 001A Rd0 (Lo word) (tare for Scale Meter)
33 0021 Deviation 1 (Hi word) (SP1DIFF for Sc M) 2C32 Dec pt same
as displayed
34 0022 Deviation 1 (Lo word) (SP1DIFF for Sc M)
35 0023 Deviation 2 (Hi word) (SP2DIFF for Sc M) 2C32 Dec pt same
as displayed
36 0024 Deviation 2 (Lo word) (SP2DIFF for Sc M)
37 0025 Deviation 3 (Hi word) (not for Scale Meter)
2C32
Dec pt same
as displayed
38 0026 Deviation 3 (Lo word) (not for Scale Meter)
3 0027 Deviation 4 (Hi word) (not for Scale Meter) 2C32 Dec pt same

- 18
-
40 0028 Deviation 4 (Lo word) (not for Scale Meter) as displayed
41 002 Analog Lo (Hi word) 2C32 Dec pt same
as displayed
42 002A Analog Lo (Lo word)
43 002B Analog Hi (Hi word) 2C32 Dec pt same
as displayed
44 002C Analog Hi (Lo word)
* Values are for Base 1 Standard addressing. Add 1 for Base 0 PLC addressing.
** Scale = .0001 x dec value of (Hi ord + Lo ord)
Data Type B16
For the follo ing, use any starting Register Address and any number of Registers.
Register Address
Register Name Bit Significance
Dec
Hex
65 0041 Alarm Config 1 Bit 0 0 = AL1 Hi Active 1 = Lo Active
Bit 1 0 = AL1 Enabled, 1 = Disabled
Bit 2 0 = AL2 Hi Active 1 = Lo Active
Bit 3 0 = AL2 Enabled 1 = Disabled
Bit 4 0 = AL1 Non-Latched 1 = Latched
Bit 5 0 = AL2 Non-Latched 1 = Latched
Bit 6 0 = Relay1 Active On 1 = Off
Bit 7 0 = Relay2 Active On 1 = Off
66 0042 Alarm Config 2 Bits 2:0 # Readings before Alarms 1 & 2.
000 = 1, 001 = 2, 010 = 4, 011 = 8, 100 = 16,
101 = 32, 110 = 64, 111 = 128
Bit 3 AL1 0 = Deviation 1 = Hysteresis
Bit 4 AL2 0 = Deviation 1 = Hysteresis
Bit 5 0 = Deviation in Menu 1 = Omitted
67 0043 Alarm Config 3
(not applicable
to Scale Meter)
Bit 0 0 = AL3 Hi Active 1 = Lo Active
Bit 1 0 = AL3 Enabled 1 = Disabled
Bit 2 0 = AL4 Hi Active 1 = Lo Active
Bit 3 0 = AL4 Enabled 1 = Disabled
Bit 4 0 = AL3 Non-Latched 1 = Latched
Bit 5 0 = AL4 Non-Latched 1 = Latched
Bit 6 0 = Relay3 Active On 1 = Off
Bit 7 0 = Relay4 Active On 1 = Off
68 0044 Alarm Config 4
(not applicable
to Scale Meter)
Bits 2:0 = # Readings before Alarm 3 & 4
000 = 1, 001 = 2, 010 = 4, 011 = 8, 100 = 16,
101 = 32 110 = 64 111 = 128
Bit 3 AL3 0 = Deviation 1 = Hysteresis
Bit 4 AL4 0 = Deviation 1 = Hysteresis
Bit 5 0 = Deviation in Menu 1 = Omitted

- 19
-
6 0045 Input Type Lo Byte Hex value
40-4D Thermocouple JF, C, KF, KC, NF, NC, EF, EC,
TF, TC, SF, SC, RF, RC
50-5C RTD pre-200 : 4-wire DIN°F, 4-wire DIN°C,
4-wire ANSI°F, 4-wire°C, 3-wire DIN°F, 3-wire
DIN°C, 3-wire ANSI°F, 3-wire ANSI°C, 2-wire
DIN°F, 2-wire DIN°C, 2-wire ANSI°F, 2-wire
ANSI°C, Short
50-57 RTD post-200 : DIN°F, DIN°C, ANSI°F,
ANSI°C, Ni°F, Ni°C, Cu°F, Cu°C,
60-64 DC 0.2V, 2V, 20V, 200V, 660V
70-73 DC 2 mA, 20 mA, 200 mA, 5A
A0-A2 Ratio 0.2V, 2V, 20V
80-84 RMS 0.2V, 2V, 20V, 200V, 660V
0- 3 RMS 2 mA, 20 mA, 200 mA, 5A
C0-C4 Strain 20, 50, 100, 250, 500 mV
D0-D4 Load Cell 20, 50, 100, 250, 500 mV
E0-E4 Ohms 20, 200, 2000, 20K, 200K
70 0046 Setup
(applicable to
DPM)
M = Meter
F = Function
D = Display
Bits 3:0 Ctrl In 1 Ctrl In 2 Both Reset
Hex 0 M Reset M Hold M Reset
Hex 1 F Reset Pk, Vy M Reset
Hex 2 M Hold Pk, Vy F Reset
Hex 3 M Hold Tare M Reset
Hex 4 Pk, Vy Tare FReset
Hex 5 Tare M Reset M Reset
Hex 6 DP2 DP3 DP5 Neither = DP1
Hex 7 DP3 DP4 DP6 Neither = DP2
Hex 8 F Reset D Blank M Reset
Hex M Hold D Blank M Reset
Hex A Pk, Vy D Blank F Reset
Hex B Tare D Blank M Reset
Hex C Valley Peak F Reset
Hex D Tare T Reset M Reset
Bits 5:4
Hex 00 Scale using Scale, Offset
Hex 01 Scale using Coordinates of 2 Points
Hex 10 Scale using Reading Coordinates
Bit 6 Spare
Bit 7 0 = 60 Hz, 1 = 50 Hz

- 20
-
70 0046 Setup
(applicable to
Scale Meter)
M = Meter
F = Function
D = Display
T = Tare
Bits 3:0 Ctrl In 1 Ctrl In 2 Both Reset
Hex 0 M Reset M Hold M Reset
Hex 1 F Reset Peak D M Reset
Hex 2 M Hold Peak D F Reset
Hex 3 M Hold Tare Tare
Hex 4 Peak Tare F Reset
Hex 5 M Reset Tare M Reset
Hex 6 F Reset Tare M Reset
Hex 7 T Reset Tare M Reset
Hex 8 D Blank Tare M Reset
Hex M Reset D Blank M Reset
Hex A F Reset D Blank M Reset
Hex B D Item Tare Tare
Hex C D Item D Blank F Reset
Hex D M Reset D Item M Reset
Hex E F Reset D Item M Reset
Hex F M Hold D Item M Reset
Bit 4 0 = Scale, Offset 1 = Coord of 2 Points
Bit 5 0 = Peak key is Peak 1 = Peak key is Tare
Bit 6 0 = 60 Hz 1 = 50 Hz
Bit 7 0 = No dummy zero 1 = Dummy zero
71 0047 Filter Bits 3:0 Filtering
Hex 0 = Auto Filter, 1 = Batch 16, 2- = Moving
Avg, 2 = .08S, 3 = .15S, 4 = .3S, 5 = .6S, 6 = 1.2S,
7 = 2.4S, 8 = 4.8S, = .6S, A = Unfiltered
Bit 4 0 = Low Adaptive 1 = High Adaptive
Bit 5 0 = Display Batch of 16 1 = Display Filtered
Bit 6 0 = Peak of Unfiltered 1 = Peak of Filtered
Bit 7 0 = Alarm source Unfiltered, 1 = Filtered
72 0048 Options Do Not Use.
73 004 Serial Config 1 Bits 3:0 Time between Continuous Serial Outputs
Hex 0=.017S, 1=.28S, 2=.57S, 3=1.1S, 4=2.3S,
5=4.5S, 6= .1S, 7=18.1S, 8=36.3S, =1M13S,
A=2M25S, B=4M50S, C= M40S, D=1 M20S,
E=38M41S, F=77M21S
Bits 6:4 Baud Rate
000 = 300, 001 = 600, 010 = 1200, 011 = 2400,
100 = 4800, 101 = 600, 110 = 1 200
Bit 7 0 = Send Unfiltered value, 1 = Send Filtered Val