Outline Of Stop - Mitsubishi Electric FATEC MELSEC iQ-R Training Manual

1.3.3

Outline of stop

The axis stop signal or stop signal from external input signal is used to stop the control.
It is necessary to create a program for turning on the "[Cd.180] Axis stop signal" as the
stopping program.
Each control is stopped in the following cases.
(a) When each control is completed normally
(b) When the servo amplifier power supply is turned off
(c) When a CPU module error occurs
(d) When the PLC READY signal is turned OFF
(e) When an error occurs in RD77MS
(f) When control is intentionally stopped
(Stop signal from CPU module turned ON, "Stop signal" of external input signal turned
ON, etc.)
The stop process for the above cases is shown below.
(Except the normal termination in case (a))
Stop cause
"Forced stop input signal" OFF
Forced stop
from an external device
Servo READY OFF
Servo amplifier power supply OFF
Forced stop
Servo alarm
Forced stop input to servo amplifier
Fatal stop Hardware stroke limit upper/lower
(Stop group 1) limit error occurrence
Error occurs in a CPU module
Emergency stop
(Stop group 2)
PLC READY signal OFF
Relatively safe stop Axis error detection (Error other
(Stop group 3) than stop group 1 or 2)
"Axis stop signal" ON from a CPU
module
Intentional stop
(Stop group 3)
"Stop signal" of external input
signal ON
Stop axis
All axes
Each axis
Each axis
All axes
Each axis
*1
Each axis
1-10
M code ON Axis operation status
signal after stop after stopping ([Md.26])
No change Servo OFF
Servo amplifier has not
been connected
No change
Servo OFF
No change
No change
Turns OFF
No change
No change
Error
Error
Error
Error
Stopped
(Standby)