Omron SYSMAC CS1D-PD Series Operation Manual page 124

Programming Devices
Leaving CX-Programmer Connected Constantly to RS-232C Port
Active CPU Unit
C S
R U N
ER R /A LM
I N H B K U P
P R P H
RS-422A/485 (See note a.)
84
2. If connected to the RS-232C port of the standby CPU Unit, neither reading
nor writing can be executed from the CX-Programmer. Reading only, how-
ever, can be enabled by means of the Standby CPU Unit RS-232C Port
Setting in the PLC Setup.
Standby CPU Unit
C S D P L01 C S
R U N D P L S T A T U S
ER R /A LM A C T I V E
R
C P U S T A T U S
I N H B K U P
A C T I V E
L
P R P H C O M M C P U S T A T U S
R I G H T C P U
N O U SE
LEFT C P U
U SE
N O U SE
M O D E
O N O FF
SP L D P L
A C T. A C T.
LEFT R I G H T
O N
I N I T .
S W
C O M M
P R P H L
A 39512
R SV
O N
With a Duplex CPU Systems, communications will become possible if the CX-
Programmer is left connected constantly only to the active CPU Unit, and an
operation switching error occurs causing the active CPU Unit to become the
standby CPU Unit.
For that reason, if the CX-Programmer is to be left connected, or if it is prefer-
able to not have to reconnect the cable to the other CPU Unit when a switch-
ing error occurs, it is recommended that the following connection be used. For
this, it is required that the Standby CPU Unit RS-232C Port Setting in the PLC
Setup be set so that independent communications are disabled (i.e., the
default setting).
Standby CPU Unit
D P L01 C S C S
D P L S T A T U S R U N
A C T I V E
ER R /A LM
R
C P U S T A T U S
I N H B K U P
A C T I V E
L
C P U S T A T U S P R P H C O M M
R I G H T C P U
N O U SE
LEFT C P U
U SE
N O U SE
M O D E
O N O FF
SP L D P L
A C T. A C T.
LEFT R I G H T
O N
I N I T .
S W
C O M M
P R P H L
CJ1W-CIF11 R422A
A 39512
R SV
O N
Conversion Adapter or
NT-AL001 Link Adapter
(See note b.)
RS-422A/485 (See note a.)
Note a) Use shielded twisted-pair cable for the RS422A/RS-485 cable.
CO-HC-ESV-3P×7/0.2
b) The CJ1W-CIF11 does not provide isolation. The total length of
the transmission path must therefore be 50 m or less. If the trans-
mission distance is greater than 50 m, use the NT-AL001, which
provides isolation, and do not include the CJ1W-CIF11 in the
CX-Programmer
C S
R U N
ER R /A LM
I N H B K U P
P R P H C O M M
When connected to the peripheral port,
write operations cannot be executed.
Only read operations are enabled.
When connected to the RS-232C port, and
with the default settings in the PLC Setup,
both reading and writing are disabled.
CX-Programmer
RS-232C
+5 V
NT-AL001 Link Adapter
Termination resistance ON
+5 V must be provided to the Link
Adapter on the side that connects
to the personal computer.
Model
Hirakawa Hewtech Corp.
Section 2-6
Programming Console
(peripheral port only)
or
Manufacturer