In RS485 communication protocol, the commands are sent by the node which is defined as a master. Modbus protocol supports a maximum of 247 devices to connect without a repeater (with only a Master initiating The protocol is “zero indexed” so that the hexadecimal address sent in the protocol for the first receiver is $00 which corresponds to address 1. 10 Connect the adapter to the ACS 140 and wire it to the RS485 network.
Rs485 protocol programming 8 Confirm that the operation mode is RS485 (jumper S5).
