Mitsubishi Electric MELSEC-F Series - Restarting Method after the Forward Limit;Reverse Limit Operation; Handling the STOP Command; Operation by the STOP Command

6 Before Starting Positioning Operation
6.5 Handling the STOP Command
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FX3U-1PG User's Manual
1
Introduction
2
Specification
3
System Configuration
4
Installation
5
Wiring
6
Before Starting Positioning Operation
7
Buffer Memory
8
Manual Control
9
Positioning Control
10
Program Example
6.4.3 Restarting method after the forward limit/reverse limit operation
When the forward limit/reverse limit in the operation direction turns on during operation, the forward limit and
reverse limit error is output (error code: K6). Moving to the activated forward limit/reverse limit direction
cannot be executed.
Use the JOG operation in opposite direction to avoid the limit error. At that time, forward limit/reverse limit
error is also reset. In addition, it is also possible to avoid the limit error by using the positioning operation in
the opposite direction of the forward limit/reverse limit after resetting the error.
6.5 Handling the STOP Command
6.5.1 Operation by the STOP command
The STOP command in any positioning operation is always valid. Deceleration stop or immediate stop by
input from the STOP terminal or input (BFM#25 b1) from the BFM is possible. (Refer to the following table.)
However, if the STOP command is input during the deceleration stop of a positioning operation, the STOP
command is ignored. The positioning completion flag turns on.
When the input from the STOP terminal is set to interrupt input 1 by the operation parameter (BFM#3 b3, b2
or BFM#37 b3, b2), operation varies depending on the operation mode.
• External command positioning operation or interrupt 2-speed positioning operation
The input from the STOP terminal functions as an interrupt input.
→ For the external command positioning operation, refer to Section 9.5.
→ For the interrupt 2-speed positioning operation, refer to Section 9.8.
• In any operation other than the external command positioning operation or interrupt 2-speed positioning
operation
The input from the STOP terminal functions as the STOP input.
In case of input from the STOP terminal, the operation varies depending on the setting of the STOP input
polarity (BFM#3 b14 or BFM#37 b14).
- When STOP input polarity = 0: Input is ON, STOP becomes valid.
- When STOP input polarity = 1: Input is OFF, STOP becomes valid.
In case of input from the BFM, STOP becomes valid when BFM#25 b1 is ON.
Point
When input from the STOP terminal is used as interrupt input 1, the external command positioning operation
and the interrupt 2-speed positioning operation become different from other positioning operations.
Operation mode Stop operation
Variable speed operation (Without acceleration/deceleration) Immediate stop
Data-set type mechanical zero return Ignore
Any other operation Deceleration stop