Omron M1 Series User Manual page 654

8 Communications Functions
8-2
RS-485 Terminal Arrangement and
Connection
The communications terminals are arranged as follows.
AO DO1
SP SN
RS-485 terminal
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.
8-4
USB port is intended for computer only.
DO2 DOC DI6 DI7 DIC
PIA PIB PIZ DIC +24
External
SP SN
SP SN
3G3M1 (No.2)
110:
3G3M1 (No.1)
+24
SP SN
3G3M1 (No.3)
M1 Series Standard Type User's Manual (I669)
Terminating resistor
selector switch (SW6)
*1
SP SN
110:
3G3M1 (No.n)