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5
29. Automationdirect PLC 5-133
Connection to PLCs
Available Memory
The available memory setting range varies depending on the PLC model. Be sure to set within the
range available with the PLC to be used. Use [TYPE] when assigning the indirect memory for macro
programs.
Wiring
Wiring diagrams with the PLC are shown below.
RS-232C
Wiring Diagram 1
Memory TYPE Remarks
V (data register) 0
X (input relay) 1
Y (output relay) 2
C (internal relay) 3
S (stage) 4
GX (global inputs) 5
GY (global outputs) 6
T (timer/contact) 7
CT (counter/contact) 8
V7 (CN1)
FG
SD
RD
RS
CS
1
2
3
4
5
SD
RD
PLC
RS
CS
SG
2
3
4
5
7
SG 7
* Use shielded twist-pair cables.
D-sub 25-pin (male)
D-sub 25-pin (male)