8-18
Serial Communications
Remote I/O Examples (cont.)
Example #3 – PLC 5/20, 5/40, 5/60, and 5/80
This example demonstrates PLC control of an SMC Dialog Plus
controller with the Pump Control option. Use of the Option
Command bit to initiate the pump stop maneuver is also shown.
Finally, the SMC fault bit is monitored as a conditional logic input for
the block transfer of the associated fault code stored in the SMC
Dialog Plus controller’s Parameter 19, Fault Buffer #1. Many of the
selections shown are example-specific. Some changes by the user
may be necessary to apply the concepts of this example to a specific
application.
System Configuration
Note: It is critical that during the system design phase that each
device on the Remote I/O link is allocated a unique segment
of the PLC’s I/O image table. This is accomplished by
coordination of the devices’ rack address, rack size, and
starting group address.
Remote I/O Link
SMC Dialog Plus
Controller
1203-GD1
Rem I/O
Rem I/O STS
Rem I/O ACT
Health
SCAN bus STS
FA ULT
2
SH
1
V+
V-
L1
1
L2
3
L3
5
11
21
12
22
13
23
14
24
15
25
16
26
17
27
18
28
19
29
20
30
G
Communication Module
Bulletin 1202 SCANport Cable
PLC 5/20, 5/40. 5/60, or 5/80
To Next Page
Loading...
Need help?
General
