1. Basic Understanding of Instructions
Input-differentiated Instructions
6
■
Upwardly Differentiated Instructions (Instruction Preceded by @)
Output Instructions:
The instruction is executed only during the cycle in which the execution condi-
tion turned ON (OFF
The instruction is executed only during the cycle in which the execution condi-
tion turned ON (OFF
(@) Upwardly differ-
entiated instruction
■
Time Chart
Bit A
Bit A
Operation
of SET
Input Instructions (Logical Starts and Intermediate Instructions):
The instruction reads bit status, makes comparisons, tests bits, or perform
other types of processing every cycle and will output an ON execution condi-
tion (power flow) when results switch from OFF to ON. The execution condi-
tion will turn OFF the next cycle. The instruction reads bit status, makes
comparisons, tests bits, or perform other types of processing every cycle and
will output an ON execution condition (power flow) when results switch from
OFF to ON. The execution condition will turn OFF the next cycle.
Upwardly differentiated
input instruction
■
Time Chart
Bit A
Bit A
Bit B
Input Instructions (Logical Starts and Intermediate Instructions):
The instruction reads bit status, makes comparisons, tests bits, or perform
other types of processing every cycle and will output an OFF execution condi-
tion (power flow stops) when results switch from OFF to ON. The execution
condition will turn ON the next cycle.
Upwardly differentiated
input instruction
ON) and are not executed in the following cycles.
ON) and are not executed in the following cycles.
Example
1.02
Executes the MOV instruction once when
CIO 1.02 goes OFF
Example
1.03
ON execution condition created for one
cycle only when CIO 1.03 goes from
OFF to ON.
Bit B
1.03
Example
OFF execution condition created for one
cycle only when CIO 1.03 goes from
OFF to ON.
CS/CJ/NSJ Series Instructions Reference Manual (W474)
@MOV
ON.
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