User manual

Publication 1760-UM001A-EN-P
Inside Pico 8-3
Determining Cycle Time
of Circuit Diagrams
The maximum cycle time of a circuit diagram must be known in order to
determine the maximum counter frequency or reaction time of Pico.
Blank Cycle Time Calculation Tables can be found on page A-7 of this manual.
1760-L12xxx Cycle Time
For 1760-L12xx the cycle time can be calculated as follows:
List of Times for Processing Function Relays
Function Number Time Duration in µs Total
Basic pulse 1 210 –
Refresh 1 3500 –
Contacts and bridged contact fields – 20 –
Coils – 20 –
Total rungs from the first one to the last
one, with empty ones in between
–50 –
Connecting lines (only )
–20 –
Timing relays – – –
Counters – – –
Analog value function relays – – –
Total –
Number 12345678
Timing relays in µs 20 40 80 120 160 200 240 280
Counters in µs 20 50 90 130 170 210 260 310
Analog value processors in µs 80 100 120 140 160 180 220 260
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