User Manual PLC-3 BACKUP CONC(OR.DU1 Owner's manual

Diagnosing Faults
Chapter 6
6-5
Figure 6.2
Indicator
Locations for 1775S4 and 1775SR Scanner Modules
PASS and FAIL indicators
Thumbwheel switch
I/O channel
status indicators
1775 - S4A
Scanner
1775 - SR
Scanner
18750
Figure 6.3
Indicator Locations for 1775S5 and 1775SR5 Scanner Modules
PASS and FAIL indicators
Thumbwheel switch
I/O channel
status indicators
1775 - S5
Scanner
1775 - SR5
Scanner
18751
Forces enabled indicator
Data Highway / Data
Highway Plus status
indicators