Completion Of Instruction Execution ("Instruction Execution Complete" Flag, "Instruction Execution Abnormal End" Flag; Pulse Output Monitor" (Busy/Ready) Flag; Positioning Instruction Activation" Flag - Mitsubishi Electric Melsec-F FX3GC Series User Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
Built-in Positioning Functions
4.4.2 Completion of Instruction Execution ("Instruction execution complete" Flag,
"Instruction execution abnormal end" Flag)
Use the "Instruction execution complete" flag or "Instruction execution abnormal end" flag to check whether
execution of the positioning instruction has been completed properly.
The "Instruction execution complete" flag and "Instruction execution abnormal end" flag are turned on or off
after each instruction. Use these flags just after the execution of each instruction.
• "Instruction execution complete" flag (M8029): Will be turned on if the instruction is executed properly.
• "Instruction execution abnormal end" flag (M8329): Will be turned on if the instruction is not executed
properly.
*1. Will not be turned on for execution of the PLSV instruction.
Caution:
If the "Instruction execution complete" flag or "Instruction execution abnormal end" flag is turned on, then the
execution of the instruction (pulse outputting operation, etc.) is complete. However, it is not certain whether
the servo motor has stopped or not. Check the "positioning completion" signal of the servo amplifier (drive
unit) to determine whether the servo motor has stopped.
4.4.3

"Pulse Output Monitor" (BUSY/READY) Flag

Use the "pulse output monitor" (BUSY/READY) flag to check whether pulses are being output to the pulse
output destination device. The following table shows the "pulse output monitor" (BUSY/READY) flag of each
pulse output destination device.
Pulse output
destination device
Y000
Y001
*1
Y002
*2
Y003
*1. Y002 is not available in FX
*2. Y003 is available only when two high-speed output special adapters are connected to the FX
4.4.4

"Positioning Instruction Activation" Flag

Use the "positioning instruction activation" flag of each pulse output destination device to check whether or
not a positioning instruction is being executed for the pulse output destination device. Use this flag to prevent
simultaneous activation of two or more positioning instructions for the same pulse output destination device.
Pulse output
destination device
Y000
Y001
*1
Y002
*2
Y003
*1. Y002 is not available in FX
*2. Y003 is available only when two high-speed output special adapters are connected to the FX
B - 66
PLC User's Manual - Positioning Control Edition
"Pulse output monitor"
(BUSY/READY) flag
M8340
M8350
M8360
M8370
PLC (14-point and 24-point type) and FX
3G
"Positioning instruction
Activation" flag
M8348
M8358
M8368
M8378
PLC (14-point and 24-point type) and FX
3G
4.4 Current Value and Flag for Monitoring of Operation
For programming details, refer to Subsection 4.7.4.
Status of flag and pulse
Outputting pulse (BUSY): Flag = ON
Pulse outputting stopped (READY): Flag = OFF
Status of flag and pulse
ON: The positioning instruction is being activated for the
corresponding pulse output destination.
(Even after instruction execution is completed, if the
instruction is still being activated, the flag will not be
turned off.)
OFF: The positioning instruction is not being activated for the
corresponding pulse output destination.
4 Before Programming
/FX PLC.
3S 3GC
3U
/FX PLC.
3S 3GC
3U
*1
PLC.
PLC.