IMO iDrive Instruction Manual page 63

1. RS-485 communication: (requires RS485 port device)(Option)
1 to 1 control: One PC or PLC controls one inverter (b77 is set to 001~254).
1 to many control: PC or PLC or other controllers control several inverters (up to 254 inverters
with b77 set as 001~254). When the communication address = 000, the inverter is controlled by
communication regardless of the setting value of b77.
2. RS-232 communication: (requires RS232 port device)(Option)
1 to 1 control: PC or PLC or controller controls one inverter (b77 is set to 001~254).
※Note: a. The baud rate (b78) and communication format (b79/b80/b81) of PC (or PLC or other
controller) and inverter should be the same.
b. The inverter will validate any modified parameters after the parameters are modified by
PLC or PC etc.
c. Communication protocol: refer to EDX communication protocol description.
d. Parameters b77~b81 cannot be changed in communication mode.
b82
Communication error detection time (s)
b83
Communication error – inverter response
(1) Time-out detection time: 00.0~25.5sec; setting 00.0 sec: disable time-out function.
Default = 00.0sec
*Cannot be changed in communication mode.
(2) Time-out operation selection:
000 : Deceleration to stop (A05 : Deceleration time 1).
001 : Coast-to-stop.
002 : Deceleration to stop (b01 : Deceleration time 2).
003 : Continue operating (Ignore error).
Default = 000
*Cannot be changed in communication mode.
See Communication error timing diagram following.
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Chapter 4 Software index