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3. Instruction Set
3-11
Timing Diagram:
A
scan cycle
M0
Y0
M1
A scan cycle
Mnemonic Function Program steps
PN
Positive contact to Negative contact 1
Controllers
ES2/EX2 SS2
SA2
SE
SX2
Explanation:
When the conditions preceding PN command change from true to false, PN command (works as
contact A) will be ON for a scan cycle. In the next scan cycle it turns OFF.
Program Example:
Ladder Diagram:
M0 M1
Y0
P
Instruction: Operation:
LD M0 Load NO contact M0
AND M1 Connect NO contact M1 in series
PN
Negative contact to Positive contact
OUT Y0 Drive coil Y0
Timing Diagram:
A scan cycle
M0
Y0
M1
A scan cycle