Immediate Stop Of Pulse Output (Pulse Output Stop Command Relay; Designation Of Zero Return Direction (Dszr/Zrn Instruction - Mitsubishi Electric FX3S Series User Manual

FX /FX /FX
3S 3G 3GC
Built-in Positioning Functions
4.3.2

Immediate Stop of Pulse Output (Pulse Output Stop Command Relay)

During the execution of a positioning instruction, if the pulse output stop command relay is turned on, the
pulses being output will immediately stop.
To output pulses again, turn off the pulse output stop command relay, deactivate (turn off) the positioning
instruction, and then activate the instruction again (turn it on again).
The following table shows the pulse output stop command relay of each pulse output destination device.
Pulse output destination
*1.
*2.
Note:
Use these relays only if immediate stop is absolutely needed to avoid dangers. Since the motor is
immediately stopped, use of these relays may damage the system. For normal STOP operation (decelerate
to stop), use the "instruction OFF" function or "forward/reverse limit relay."
However, note that if the PLSV instruction is used together with the "instruction OFF" function or the "forward/
reverse limit relay" in the M8338 = OFF mode (operation without acceleration/deceleration), operation will
immediately stop.
4.3.3

Designation of Zero Return Direction (DSZR/ZRN Instruction)

Use the DSZR instruction (zero return instruction with DOG search function) or ZRN instruction (zero return
instruction) to specify the zero return direction
Reverse rotation limit 2
(Servo amplifier side)
*1.
1. Zero return instruction with DOG search function (DSZR instruction)
Turn on or off the zero return direction specification relay shown in the following table to specify the zero
return direction.
destination device
*2.
*3.
B - 58
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/FX /FX PLC User's Manual - Positioning Control Edition
3U 3UC
Pulse output stop
device command relay
Y000
Y001
*1
Y002
*2
Y003
Y002 is not available in FX
Y003 is available only when two high-speed output special adapters are connected to the FX
Reverse rotation limit 1
(Programmable
controller side)
Servo motor
Reverse rotation
If the DSZR instruction (zero return instruction with DOG search function) is used, zero return will be
performed in the direction of the first operation.
Pulse output Zero return direction
specification relay
Y000
Y001
*2
Y002
*3
Y003
Y002 is not available in FX
Y003 is available only when two high-speed output special adapters are connected to the FX
search engine
M8349
During pulse outputting operation, if the pulse output stop
M8359
command relay of the corresponding pulse output
destination device is turned on, the pulse outputting
M8369
operation will immediately stop.
M8379
PLC (14-point and 24-point type) and FX
3G
*1 . The zero return direction depends on the instruction.
For operation of DSZR instruction, refer to Section 6.2.
For operation of ZRN instruction, refer to Section 6.3.
Forward rotation limit 1
(Programmable
controller side)
LSR LSF
Forward rotation
M8342
To perform zero return in the forward
M8352
To perform zero return in the reverse
M8362
M8372
PLC (14-point and 24-point type) and FX
3G
4 Before Programming
4.3 Various Special Relays for Operation Commands
Operation
/FX PLC.
3S 3GC
Forward rotation limit 2
(Servo amplifier side)
Description of setting
rotation direction: Turn on the relay.
rotation direction: Turn off the relay.
/FX PLC.
3S 3GC
PLC.
3U
PLC.
3U