Connecting Readers, Inputs, Outputs, and Temperature Sensors
233190 X3 Linear LLC
18
May 2013
The three states of the normally closed series resistor input circuit are read
according to the values in the following table.
Input State
Resistance Values
Normal
1k Ohms
Alarm
No current (∞ Ohms)
Short
0k Ohms
Normally Closed Unsupervised Input Circuits
Figure 14. Normally closed unsupervised input circuit.
The two states of the normally closed unsupervised input circuit are read
according to the values in the following table.
Input State
Resistance Values
Normal
0k Ohms
Alarm
No current (∞ Ohms)
Normally Open Parallel Resistor Input Circuits
Figure 15. Normally open parallel resistor input circuit.
NO Parallel Resistor
NC Unsupervised
