Serial Communications
8-5
Remote I/O Examples
Example #1 – SLC 500 Controller without Block Transfer
This example demonstrates discreet control of an SMC Dialog Plus
controller from an SLC 500 logic controller. Additionally, the SLC
controller reads the Current Phase A from the SMC Dialog Plus
controller via the analog feedback word. 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 SLC’s I/O image table. This is accomplished by
coordination of the devices’ rack address, rack size, and
starting group address.
SLC 5/02 or higher 1747-SN Scanner
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
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