User manual

512/612 Modicon Micro PLCs
30
890 USE 145 00
Circuit Characteristics
Simplified schematic
Field
side
Logic
side
5 V
Interrupt/counter
Com
Isolation
Method Opto-coupler
Channel-to-bus 500 VDC
Group-to-group 500 VDC
Addressing 1 register in
Maximum cable length 50 m
Response time
OFF®ON 10 ... 20 ms
ON®OFF 10 ... 20 ms
Required cable type Shielded twisted pair, for noise immunity
Wire size 20 AWG
Up-counter positive edge trigger
Maximum counter rate 5 kHz
Pulse duration > 100 ms
Interrupt voltage level To assure reliable system operation,
interrupt voltage must be brought from OFF
to ON and maintained ON for 350 ms
minimum—any pulse duration < 20 ms is
filtered