)
3-2-5 Setting the Terminator
TheRemoteI/O Unitattheendof the system must beset as theterminator.
Otherwise, all Remote I/O Units cannot operate. This section describes
how to set the 3G3EV-AR as a terminator.
Setting the Terminator
•Open the terminal block cover in the lower part of the Inverter. The terminator setting
switch is located on the left side of the control circuit terminals.
•Sliding the switch to the right sets the Inverter as the terminator.
Terminator setting switch
Notes on Setting the Terminator
•The last Slave Unit under each Remote I/O Master Unit must be set as the terminator.
•Always set a terminator even when only one unit is to be connected.
•If no terminator is set, the Remote I/O System fails to operate, and the PC also fails to
start operation even when the Master Unit enters run mode. In this case, the “END RS”
indicator (terminator checking) remains lit. The Programming Console also displays a
message indicating that CPU is on hold.
Chapter 3
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