IDEC High Performance Series - Manual (Page 537)

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21 VIGOR
2
2
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Con
nection
to a PLC
External Device Setup Manual
21.3.2 Connection Diagram 2: VB0, VB1, VB2, VH (VB-485A)
HG2G-5F, HG3G/4G Series uses only RDA and RDB when using RS422/485 2-wire, you don’t need to connect SDA or
SDB.
If connecting COM1 on the HG2G-5F, HG3G/4G to the external device, do not insert terminating resistor to the external
device. If terminating resistor can not be removed, use COM2 on the HG2G-5F, HG3G/4G instead of COM1.
Screw down terminal block D-sub, 9P connector plug type
Screw down terminal block Terminal