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ICP DAS PMC-5151 User Manual
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Modbus Module
This block stores the Modbus TCP/RTU module I/O channel data in PMC-5151.
The start address of the block is from the SA value. The allocation of the Modbus
address of I / O channel for each Modbus TCP/RTU module is in sequence
arrangement from the module starting address(SA). Please refer to the following
example.
The Modbus RTU module is connected to COM2 of PMC-5151. Its module index
number is 3. So the SA value of the Modbus RTU module in PMC-5151 is 1000
+ (3 - 1) x 1200 = 3400. The Modbus address of the I/O channel of the module is
in sequence arrangement from the module starting address 3400.
The detailed I/O channel information of the module：
Modbus
Data Model
The Starting Address of
Modbus RTU Module
Continuous Data
Number
Coil Output
11
7
Discrete Input
0
10
Input Register
7
4(32-bit Floating Point)
Holding Register
20
3(32-bit Floating Point)
The allocation of the Modbus Address in PMC-5151 for the Coil Output setting
of this Modbus RTU module is shown as below：
Coil Output
Index
The Modbus Address in
Modbus RTU Module
The mapping Modbus
Address in PMC-5151
1
00011
03400
2
00012
03401
3
00013
03402
249