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Appendix D - MODBUS Setup
Modbus is a serial communications protocol originally published by Modicon (now Schneider Electric) in 1979 for
use with its programmable logic controllers (PLCs). Simple and robust, it has since become a de facto standard
communication protocol, and it is now a commonly available means of connecting industrial electronic devices.
From main menu select SETUP then MODBUS to access the options. Set the communication speed according to the
PLC system available. Set the ID assigning an UNIQUE address to avoid conflicts.
1 2 3
1: GND
2: A-RS485 (+)
3: B-RS485 (-)
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