MODEL: R1M-P4

R1M-P4 SPECIFICATIONS

ES-5664 Rev.11 Page 5/7

http://www.m-system.co.jp/

MODBUS COMMUNICATION

■ COMMUNICATION PARAMETERS

PARAMETER

SPECIFICATION

Data Mode

RTU

Baud Rate

9600 / 19200 / 38400 (*) bps

Parity

None / Odd (*) / Even

Bit Length

8

Stop Bit

1 (*) / 2

Node Address

1 (*) to 15

Floating Point Data

N/A

Interface

RS-232-C/ RS-485

(*) Ex-factory setting

■ FUNCTION CODES & SUPPORTED CODES

CODE

NAME

01

Read Coil Status

X

Digital output from the slave

02

Read Input Status

X

Status of digital inputs to the slave

03

Read Holding Registers

X

General purpose register within the slave

04

Read Input Registers

X

Collected data from the field by the slave

05

Force Single Coil

X

Digital output from the slave

06

Preset Single Registers

X

General purpose register within the slave

07

Read Exception Status

08

Diagnostics

09

Program 484

10

Poll 484

11

Fetch Comm. Event Counter

Fetch a status word and an event counter

12

Fetch Comm. Event Log

A status word, an event counter, a message count and a field of event bytes

13

Program Controller

14

Poll Controller

15

Force Multiple Coils

X

Digital output from the slave

16

Preset Multiple Registers

X

General purpose register within the slave

17

Report Slave ID

Slave type / ‘RUN’ status

18

Program 884/M84

19

Reset Comm. Link

20

Read General Reference

21

Write General Reference

22

Mask Write 4X Register

23

Read/Write 4X Register

24

Read FIFO Queue

■ DATA ADDRESS

ADDRESS

DATA FORMAT

NAME

Coil (0X)

1 – 8

bit

DO

49

bit

All counters reset

50

bit

Pulse logic to count

Input Status (1X)

1 – 8

bit

DI

Input Register (3X)

1 – 16

UL

Totalized count (ch.1 – 8)

17 – 24

UL

Totalized count (ch.A – D)

33 – 40

UI

Momentary value (ch.1 – 8)

41 – 44

UI

Momentary value (ch.A – D)

513

I

System status

514 – 521

B16

Model No. (“R1M-x”)

522 – 529

B16

Serial No.

530 – 537

B16

Hardware version No.

538 – 545

B16

Firmware version No.

Holding Register (4X)

1 – 16

UL

Counter preset value (ch.1 – 8)

17 – 24

UL

Counter preset value (ch.A – D)

bit = 1 bit, UL = 32-bit integer, I = signed 16-bit integer, UI = 16-bit integer, B16 = 16-byte character