User Manual

IDEC SmartRelay functions
IDEC SmartRelay Manual 119
4.2.6 NOR (not OR)
Circuit diagram of a series circuit with
several normally closed contacts:
Symbol in IDEC
SmartRelay:
The output status of the NOR is only 1 if all inputs are 0, i.e.
if switched off. The NOR output is set to 0 when one of the
inputs is switched on (logical 1 status).
At an unused block input (x): x = 0.
NOR function logic table
1234Q
00001
00010
00100
00110
01000
01010
01100
01110
10000
10010
10100
10110
11000
11010
11100
11110