DVP-ES2/EX2/EC5/SS2/SA2/SX2/SE&TP Operation Manual - Programming
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API
Mnemonic Operands Function
66 ALT P
Alternate State
Type
OP
Bit Devices Word devices Program Steps
X Y M S K H KnX
KnY
KnM
KnS
T C D E F
ALT, ALTP: 3 steps
SS2
SX2
SS2
SX2
SS2
SX2
Operands:
D: Destination device
Explanations:
1. The status of D is alternated every time when the ALT instruction is executed.
2. When ALT instruction is executed, ON/OFF state of D will be switched which is usually applied
on switching two operation modes, e.g. Start/Stop
3. This instruction is generally used in pulse execution mode (ALTP).
Program Example 1:
When X0 goes from OFF to ON, Y0 will be ON. When X0 goes from OFF to ON for the second time,
Y0 will be OFF.
Program Example 2:
Creating a flashing circuit by applying ALTP with a timer
When X20 = ON, T0 will generate a pulse every two seconds and output Y0 will be switched
between ON and OFF by the pulses from T0.
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