Mitsubishi FX3U Series User Manual

FX3U Series Programmable Controllers
User's Manual - Hardware Edition
70
5 Version Information and Peripheral Equipment Connectability
5.2 Programming Tool Applicability
Circuit blocks which require attention on
operation after write during RUN
• Instructions for falling edge pulse
When write during RUN is completed for a circuit including an instruction for
falling edge pulse (LDF, ANDF, or ORF instruction), the instruction for
falling edge pulse is not executed without regard to the ON/OFF status of
the target device.
When write during RUN is completed for a circuit including an instruction for
falling edge pulse (PLF instruction), the instruction for falling edge pulse is
not executed without regard to the ON/OFF status of the device that is set
as the operation condition.
It is necessary to set to ON the target device or operation condition device
once and then set it to OFF for executing the instruction for falling edge
pulse.
• Instructions for rising edge pulse
When write during RUN is completed for a circuit including an instruction for
rising edge pulse, the instruction for rising edge pulse is executed if a target
device of the instruction for rising edge pulse or the operation condition
device is ON.
Target instructions for rising edge pulse: LDP, ANDP, ORP, and pulse
operation type applied instructions (such as MOVP)
*1. The PLS instruction is not executed.
• MEP instruction (Conversion of operation result to leading edge pulse
instruction)
When completing Write during RUN to a circuit including the MEP
instruction, the execution result of the MEP instruction turns ON (conducting
state) if the operation result up to the MEP instruction is ON.
• MEF instruction (Conversion of operation result to trailing edge pulse
instruction)
When completing Write during RUN to a circuit including the MEF
instruction, the execution result of the MEF instruction turns OFF
(nonconducting state) regardless of the operation result (ON or OFF) up to
the MEF instruction.
When the operation result up to the MEF instruction is set to ON once and
then set to OFF, the execution result of the MEF instruction turns ON
(conducting state).
Others
When writing during RUN with GX Developer Ver. 8.13P or later, the program
is as follows.
When the number of program steps is reduced by deletion of contacts, coils
and applied instructions, the program capacity becomes smaller by as many as
the reduced number of steps.
Item Caution
Contact ON/OFF status
(while write during RUN is
executed)
Instruction for
rising edge
pulse
Instruction for
falling edge
pulse
OFF Not executed Not executed
ON
Executed
*1
Not executed
Operation result up to
MEP/MEF instruction
MEP instruction MEF instruction
OFF OFF (nonconducting) OFF (nonconducting)
ON ON (conducting) OFF (nonconducting)

Mitsubishi FX3U Series Specifications

General

Brand	Mitsubishi
Model	FX3U Series
Category	Controller
Language	English