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2 the external input/output points, Operation and application – Siemens SIMATIC TIWAY 1 User Manual

Page 33

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OPERATION AND APPLICATION

UNILINK HOST ADAPTER

2–23

USER MANUAL

2.8.2

The External Input/Output Points

The UNILINK Adapter provides a single external input point and a single
external output point. These two points operate independently and can be used
in a variety of applications like a remote “Adapter Good” indicator. For safety
critical applications, any external alarms should be hard-wired independently
of the P/C.

IN

OUT

UNILINK Host
Adapter

Panel
Lamp

20 – 40 VDC
20 – 36 VAC
(RMS)

Remote
“ADAPTER GOOD”
Indicator

Figure 2–13 External Input/Output Points Example Application