Important Points - Mitsubishi Electric FX3S Series User Manual

FX /FX /FX
3S 3G 3GC
Built-in Positioning Functions
The rotation direction ON/OFF status of the specified device is shown in the following table.
During instruction execution, however, do not use the output
ON/OFF status of device
8.3.4

Important Points

• If an the operand is changed during instruction execution, the change will be ignored and the operation will
not be affected.
Note that the changed operand will be enabled at the next activation of the instruction.
• If the instruction activation contact is turned off during execution of the instruction, the speed will
decelerate and the operation will stop.
In this case, the "Instruction execution complete" flag (M8029) will not be turned on.
• If the limit flag (forward or reverse) in the operation direction is turned on, the speed will decelerate and the
operation will stop. In this case, the "Instruction execution abnormal end" flag (M8329) will be turned on
when execution of the instruction is complete.
• If the "pulse output monitor" (BUSY/READY) flag is on, a positioning instruction (including PLSR and
PLSY) that uses the same output cannot be executed.
If the "pulse output monitor" (BUSY/READY) flag is still on after the instruction activation contact is turned
off, do not execute a positioning instruction (including PLSR and PLSY instructions) that uses the same
output number.
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/FX /FX PLC User's Manual - Positioning Control Edition
3U 3UC
D
specified by
2
Forward rotation (Outputting pulses from
ON
will increase the current value.)
Reverse rotation (Outputting pulses from
OFF
will reduce the current value.)
For details on the "Instruction execution abnormal end" flag, refer to Subsection 4.7.4.
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8 1-Speed Positioning - DRVI/DRVA Instruction
Rotation direction (increase/decrease current value)
D
1
D
1
For the important points of programming, refer to Section 4.7.
8.3 Drive To Absolute - DRVA Instruction
for other purposes.
D
2
The rotation direction (normal or reverse
rotation) depends on which value is larger;
the number of output pulses specified by
S (absolute address) or the value
indicated in the current value register.
A
B
Apx.
B - 131