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).
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