ii Network Controllers Manual
Troubleshooting 35
CPU-3/1N and CPU-3/2N Control Module Cards 36
Description 36
Application 36
Specifications 36
Installation 37
Troubleshooting 37
COMM-3 Communications Card 38
Description 38
Application 38
Specifications 39
Installation 39
Indicators 40
Programming Notes 40
Application Drawings 41
COMM-3S Serial Communications Card 43
Description 43
Application 43
Specifications 44
Installation 44
Indicators 44
Programming Notes 44
SO-20 Serial Option to 20mA Loop Module 45
Description 45
Application 45
Specifications 46
Installation 46
Indicators 47
Theory Of Operation 48
Application Drawings 49
SO-20D Dual Serial Option to 20mA Loop Module 54
Description 54
Specifications 55
Installation 55
Indicators 56
Application Drawings 57
FIB-20 Serial Option 20mA Loop Card, SO-FIB Option Fiber
Optics Interface Module 59
Description 59
Application 60
Specifications 61
Installation 61
Indicators 64
Application Drawings 65