
1–2 Introducing the Remote I/O Adapter Module
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The remote I/O adapter module consists of four major components:
diagnostic indicators
module switch assemblies
field wiring arm
Diagnostic Indicators
Diagnostic indicators are located on the front panel of the adapter
module (Figure 1.1). They show both normal operation and error
conditions in your remote I/O system. The indicators are:
• ACTIVE (green)
• ADAPTER FAULT (red)
• I/O RACK FAULT (red)
A complete description of these indicators and how to use them for
troubleshooting is explained in chapter 4.
Figure 1.1
Remote I/O Adapter Module, Cat. No. 1771-ASB Series E
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Hardware Components
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