Mitsubishi FX3U Series User Manual page 32

FX Series Programmable Controllers
3U
User's Manual - MODBUS Serial Communication Edition
The ladder code for setting the Master parameters can be expressed as follows:
MODBUS Serial
Communication Setup
M8411
0
28
H1097 D8400
MOV
H1 D8401
MOV
K2000 D8409
MOV
K400 D8410
MOV
K10 D8411
MOV
K3 D8412
MOV
H1 D8415
MOV
K100 D8416
MOV
5.2 Example of communication setup
Program for setting up a MODBUS Master
The communication
format is set.
8bit / Even / 1-bit / 19200bps / RS485
The protocol is set. 0000 0000 0000 0001
MODBUS Master / RTU Mode
Slave Response Timeout: 2 seconds (2000ms)
Turn Around Delay: 400 ms
Message to Message Delay: 10 ms
Number of Retries: 3 Retries
The Communication
Status Information 0000 0000 0000 0001
Setup is set.
Store Counter to D Devices
Communication Status Device Range Setup:
Storage Head Device = D100
5 Communication Setup
b15 b0
0001 0000 1001 0111
1 0 9 7
b15 b0
0 0 0 1
b15 b0
0 0 0 1