Panasonic FP7 Series Command Reference Manual page 155

■
How the auxiliary timer works
1) When the internal relay changes from OFF to ON, "0" is transferred to the elapsed
value area [D,D+1].
2) For each scan, the value in the elapsed value area [D, D+1] increments if the
internal relay is ON.
3) If the value for the elapsed value area [D, D+1] is equal to the value for [S,S+1], the
relay used for the OT instruction and system relay SRD are ON.
■
Precaution when using system relay SRD
● When using multiple auxiliary timers with the SRD, be sure use SRD on the line following the
auxiliary timer instruction.
WUME-FP7CPUPGR-12
3.19 SPTM (Unsigned 32-bit Incremental Auxiliary Timer)
3-51