User`s manual

91
FX3U Series Programmable Controllers
User’s Manual - MODBUS Serial Communication Edition
9 Slave Specification
9.4 User defined MODBUS Device Address Assignment
1
Outline
2
Specifications
3
System Configuration
4
Wiring
5
Communication Setup
6
Related Devices and Comm. Status
7
MODBUS Standard Commands
8
Master Specification
9
Slave Specification
10
Creating Programs
M8411
MODBUS Serial
Communication Setup
MOV
H1097 D8400
MOV
H11 D8401
MOV
H1 D8414
MOV
H11 D8415
MOV
K100 D8416
0
Program for Setting up MODBUS Slave
MOV
H5002 D8470
MOV
K0 D8471
MOV
H4 D8472
MOV
K128 D8473
MOV
H8008 D8474
Example Program for User Defined MODBUS Device
Assignment
MOV
H0 D8475
MODBUS Device Mapping 1
X mapped coils / Block Size = 2
MODBUS Device Mapping 2
Head device address = 128. Mapping = M128 - M191
MODBUS Device Mapping 3
TS mapped into H - register / Block Size = 8
MODBUS Device Mapping 3
Head device address = 0. Mapping = TS0 - TS127
MOV
H9002 D8476
MOV
K128 D8477
MOV
H0C0D D8478
MOV
K1000 D8479
MOV
H0D10 D8480
MOV
K0 D8481
For more details on the Communication Setup
Parameters, refer to Section 5.2 of this manual
MODBUS Device Mapping 1
Head device address = 0. Mapping = X0 - X37
MODBUS Device Mapping 2
M mapped into coils / Block Size = 4
MODBUS Device Mapping 4
CS mapped into H - register / Block Size = 2
MODBUS Device Mapping 4
Head device address = 128. Mapping = M128 - M159
MODBUS Device Mapping 5
D mapped into H - register / Block Size = 13
MODBUS Device Mapping 5
Head device address = 1000. Mapping = D1000 - D1207
MODBUS Device Mapping 6
R mapped into H - register / Block Size = 16
MODBUS Device Mapping 6
Head device address = 0. Mapping = R0 - R255
MODBUS Device Mapping 7
CN mapped into H - register / Block Size = 8
MODBUS Device Mapping 7
Head device address = 200. Mapping = CN200 - CN207
MOV
HF008 D8482
MOV
K200 D8483