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1-4-8 One-to-one PLC Connections
A CPM1A can be linked to a CPM1A, CQM1, CPM1, SRM1 or a C200HS or
C200HX/HE/HG PLC through an RS-232C Adapter. One PLC acts as the Mas-
ter and the other as the Slave to link up to 256 bits in the LR area (LR 0000 to LR
1515).
CPM1A CPU Unit
RS-232C Adapter
(see note)
CPM1A CPU Unit
RS-232C Cable
RS-232C Adapter
(see note)
Link bits
WRITE area
READ area
LR 00
LR 07
LR 08
LR 15
WRITE
READ
READ area
WRITE area
LR 00
LR 07
LR 08
LR 15
READ
WRITE
Link bits
Note
One-to-one PLC connections can only be used when the RS-232C Adapter
(CPM1-CIF01) is connected.
Set the DIP switch of the RS-232C Adapter (CPM1-CIF01) to the NT (bottom)
side.
The following diagram shows the wiring in the RS-232C cable used to connect a
CPM1A to another PLC.
1/Cover
2
3
4
5
6
SD
RD
RS
CS
--
--
--
SG
7
8
9
1/Cover
2
3
4
5
6
7
8
9
FG
SD
RD
RS
CS
--
--
SG
9
RS-232C Adapter
Pin No.
Signal
--
Pin No.
Signal
RS-232C Adapter
FG
Wiring and Connections
Section 1-4
Summary of Contents for CPM1A-20CAR-A
Page 3: ...ii...
Page 5: ...iv...
Page 9: ...iv...
Page 29: ...14 System Configuration Section 1 2...
Page 43: ...29 Unit Components Section 2 2...
Page 65: ...51 Wiring and Connections Section 3 4...
Page 123: ...Appendix B Dimensions 2 CPM1 CIF01 90 81 21 30 205 50 56 CPM1 CIF11 90 81 21 30 205 50 61...
Page 124: ...Appendix B Dimensions 3 Dimensions with Peripheral Devices Attached Approx 90 Approx 125...
Page 125: ...Appendix B Dimensions 4...