1. Control Method
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ML-5120A
Chapter 1 Control Method, and Start and Stop
Introduction Part
Installation and
Preparation Part
Operating Part Maintenance Part Appendixes
Chapter 1
●
Control Method, and Start and Stop
1. Control Method
This section explains the control method for the laser.
The following 3 control methods are available, namely, control from the laser control-
ler (PANEL CONTROL), control by external input/output signals connecting the PLC
(*) to the laser (EXTERNAL CONTROL), and control by sending commands from the
personal computer or the like (RS-485 CONTROL).
Select one of these 3 control methods according to the processing work. The select-
ed control method is displayed on the STATUS screen.
*: PLC: Programmable Logic Controller which is a unit to perform sequence control by executing the
programmed contents of control in sequence. This unit is often called sequencer (product name of
Mitsubishi Electric Corporation).
Switching the Control Method
Control by Laser Controller (PANEL CONTROL)
When the laser is used independently or when the power supply of the PLC or per-
sonal computer connected to the laser is OFF, the laser is under control by laser con-
troller.
⇒
To switch the control by external input/output signals over to the control by laser
controller, turn OFF pin No.25 (control switching) of the EXT. I/O (1) connector.
⇒
To switch the control by external communication control over to the control by la-
ser controller, send a command to set the control method from the personal com-
puter.
⇒
If the CONTROL keyswitch of the main unit is turned OFF even if another control
method is used, it is reset to the control by laser controller. When the CONTROL
keyswitch is turned on again, the control method is switched to the control from
the laser controller if the external communication control is used, or the control
method is set to the control by external input/output signals if the control by ex-
ternal input/output signals is used and Pin No.25 (control switching) of the EXT. I/
O (1) connector is ON (closed circuit).
Control by External Input/Output Signals (EXTERNAL CONTROL)
When the PLC or the like is connected to the main unit and pin No.25 (control switch-
ing) of the EXT. I/O (1) connector is turned ON (closed circuit), the control by external
input/output signals (EXTERNAL CONTROL) is selected.
⇒
This control method cannot be selected by operating the laser controller or per-
sonal computer.
Operating Part
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