Panasonic FP7 Series, Additional Functions Manual

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2.4 Precautions for Programming
2-9
2.4 Precautions for Programming

Programs which are not executed correctly
Do no write the following programs as they are not executed correctly.
Example 1) When X101 is ON prior to X100, Y100 does not turn on even when X100 turns
ON.
X100
Y100
ANS
X101
X102
DF
Example 2) TMX16X0 activates when X101 turns on regardless of whether X0 is on or off.
TM16X
0
U30
X100
Y100
ANS
X101
X102
Example 3) When X102 is ON prior to X100, Y101 does not turn on even when X100 turns
ON.
X100
Y101
PSHS
X101
X102
DF
X103
Y100
ANS

When a combination of contacts are set as the trigger (execution condition) of a differential
instruction (DF) or timer instruction, do not use ANS instruction, RDS instruction, or POPS
instruction.

Examples in which the above programs are rewritten