Omron SYSMAC CJ1W-SCU21-V1, Operation Manual

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Component Names and Functions Section 2-1
2-1-3 CJ-series Serial Communications Unit
Indicators
2
ON
4
TERM
ERC RUN
RD2
SCU41-V1
RD1 TER1
SD2 RDY
NO.
UNIT
ERH
SD1
PORT1
(RS422
/485)
OFF
WIRE
PORT2
01
23
4567
89
AB
CDE
F
ERC RUN
RD2
SCU21-V1
RD1
SD2 RDY
NO.
UNIT
ERH
SD1
PORT1
PORT2
01
23
4567
89
AB
CDE
F
CJ1W-SCU21-V1
2
ON
4
TERM
ERC RUN
RD2 TER2
SCU31-V1
RD1 TER1
SD2 RDY
NO.
UNIT
ERH
SD1
PORT1
(RS422
/485)
(RS422
/485)
OFF
WIRE
PORT2
01
23
4567
89
AB
CDE
F
2
ON
4
TERM
OFF
WIRE
CJ1W-SCU41-V1
CJ1W-SCU31-V1
Indicators
Terminating resistance switch
Unit number switch
2-wire/4-wire switch
Port 1: RS-422A/485
Port 2: RS-232C
Indicators
Unit number switch
Port 1: RS-232C
Port 2: RS-232C
Indicators
Unit number switch
Port 1: RS-422A/485
Port 2: RS-422A/485
Terminating resistance
switch (for port 1)
2-wire/4-wire switch
(for port 1)
Terminating resistance
switch (for port 2)
2-wire/4-wire switch
(for port 2)
Magnified view of
bottom-right corner
Indicator Color Status Meaning
RUN Green Lit Operating normally
Not lit Unit hardware error.
RDY Green Lit Protocol macro preparations have been com-
pleted.
Flashing Protocol macros are being prepared (see note
1).
Not lit Hardware error in Serial Communications Unit.
ERH Red Lit CPU Unit error, or this Unit has not been regis-
tered in the I/O table. Routing tables incor-
rectly registered in the Unit.
Flashing System Setup error (see note 1)
Not lit CPU Unit is operating normally and the Setup
Area settings are normal.