Publication 1763-RM001C-EN-P - October 2009
528 Protocol Configuration
Modbus RTU Slave Configuration
The Modbus configuration screen and configuration procedure are shown
below:
1. To set up Channel 0 and data files for Modbus communication,
select the Channel 0 Configuration tab.
2. Choose “Modbus RTU Slave” driver and assign driver characteristics.
3. Enter Modbus Data Table File Numbers. Select the Expansion check
box to utilize multiple holding register data files.
4. Enter the data table size and type for each required file. The data
table file(s) (not including the five additional tables if Expanded is
checked) will be created automatically.
NOTE
The controller default is one data file of 256 registers.
The Expansion check box enables an additional five
files and 1280 holding registers.
The five additional tables do not need to be
individually defined, but sequentially follow the first
integer or bit file. For example, if the first file is N10
(or B10), then the additional five files will be N11 (or
B11), N12 (or B12), N13 (or B13), N14 (or B14), and
N15 (or B15).
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