Yaskawa YASNAC PC NC PLC Programming Manual - Manual (Page 16)

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YASNAC PCNC PLC Programming Manual Chapter 3: PLC Program Specifications
3.2 Program Function Specifications
Table 3.3 Program Function Specifications
Item Specifications
Internal relays 11960 points
Registers 1495 registers (8 bits/register)
Timers 188 timers (5 types)
Timer Type
8 msec to 2.4 sec 40 timers
50 msec to 12.75 sec
60 timers
100 msec to 25.5 sec
1 sec to 255 sec 20 timers
1 min to 255 min 8 timers
Sequence parameters 100 sets (8 bits/set)
Keep relays 7200 points
Battery back-up memory 2900 sets
1. Internal relays and registers occupy the same addressses, and the addresses
used for internal relays cannot be used for registers. Similarily, the addresses
used for registers cannot be used for internal relays.
2. Keep relays and battery back-up memory occupy the same addresses, and the
addresses used for keep relays cannot be used for battery back-up memory.
Similarily, the addresses used for battery back-ip memory cannot be used for
keep relays.
3. Note that keep registers (#8000 to #9999) cannot be used for the keep relays.