Siemens RUGGEDCOM RM1224 Operating Instructions Manual page 31

Industrial remote communication remote networks
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Digital input
The 2-pin terminal block has the following assignment:
DI+
DI- (input ground)
If there is an adequate switching voltage at the digital input, the digital input is active and the
"DI" LED is lit. This means that, for example a local application connected to the in port can
trigger an alarm message by SMS outside the IP data connection.
RUGGEDCOM RM1224
Operating Instructions, 10/2016, RC1260-EN-02
24 VDC
-
Connecting up
3.5 Digital input/output
31

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