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Creation of User Programs
7.3 Precautions on Programming
7.3.1 Turning Off Power Supply Clears Contents in Unit Memories
• Data in unit memories are cleared when the power is turned off.
• When the power is turned on again, data is preset in the parameters saved in the FROM
within FP7 MC Unit.
7.3.2 Operation Cannot be Switched Once One Operation Has Started
• If any of the startup requests for position control, synchronous control, JOG operation and
home return turns on and the operation is initiated, this operation cannot be switched to
another operation even if another request turns on.
• BUSY flags corresponding to each axis turn on during operation. Insert them as interlock
signals for each start request on user programs.
• The stop operations (system stop, limit stop, error stop, emergency stop and deceleration
stop) are preferentially activated even in other operations.
7.3.3 Operation When PLC Mode Changes from RUN to PROG.
The operation when the mode of the CPU unit changes from RUN to PROG. varies depending
on the setting of "RUN > PROG operation" of "MC common settings".
MC common settings
Parameter
Default
name
RUN->PROG.
Deceleration
operation
stop
7-8
Description
Set the operation of FP7 MC Unit when the mode of CPU unit changes
from RUN to PROG.
Operation
The operation of each axis continues.
continuance
Deceleration
Each axis decelerates and stops in a specified
stop
deceleration stop time in the current control mode.
Immediate
Each axis decelerates and stops in a specified emergency
stop
stop deceleration time.
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