Wiring the COM. Port
Terminal layout (in the setting of RS-485)
Terminal
LED part
no.
Symbol
1
CH1
2
3
4
5
-
6
CH2
7
8
9
(Note 1) In the setting of RS-485, Terminal No.1 and Terminal No.3, and Terminal No.2 and Terminal No.4 are
respectively connected inside. They can be used as terminals for crossover wiring for the transmission cable.
(Note 2) In the setting of RS-485, Terminal No.6 and Terminal No.8, and Terminal No.7 and Terminal No.9 are
respectively connected inside. They can be used as terminals for crossover wiring for the transmission cable.
(Note 3) Do not connect anything to Terminal No.5.
(Note 4) Route between CH1 and CH2 are insulated inside.
2-16
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Terminal
Functions that can
part
be allocated
Symbol
SD
+ / S
Transmission line (+)
RD
- / S
Transmission line (-)
485
+ / R
Transmission line (+)
422
- / R
Transmission line (-)
-
-
SD
+ / S
Transmission line (+)
RD
- / S
Transmission line (-)
485
+ / R
Transmission line (+)
422
- / R
Transmission line (-)
Signal
Ports that can
direction
be allocated
in the software
-
-
COM.1
-
-
-
-
-
-
COM.2
-
-