8-2
RS-485 Terminal Arrangement and
Connection
The communications terminals are arranged as follows.
+24DI7 DICDOC DI6DO2
AO
DO1
DIC +24PIB PIZPIA
SP
SN
Terminating resistor
selector switch (SW6)
RS-485 terminal
USB port is intended for computer only.
SP SN
SN
SP
SP SN
110
W
3G3M1 (No.2) 3G3M1 (No.3)
3G3M1 (No.1)
3G3M1 (No.n)
SN
SP
110
W
*1
External
equipment (Master)
*1. If the communications are unstable, install a terminating resistor appropriate to the impedance of the cable to
each cable end. The resistance of the terminating resistor built into this inverter is 110 Ω.
8 Communications Functions
8-4
M1 Series Standard Type User's Manual (I669)
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