Download Operations Manual - Control Laser Corporation

ProWriterTM F20 Operations Manual
Installation
Installing External Devices
Basic I/O
Start Write
An external signal from either a PLC or external power source, via a normally open switch,
can be connected to the laser to begin marking of the currently loaded program each time a
voltage is provided to the “start write” input. Activating this switch in a continuous or
intermittent manner during program execution may result in improper marking operation.
Refer to Start Write Connections for complete instructions. Various methods exist to
establish a “start write” connection.
•
Use of programmable logic controller (PLC)
•
Use of an external power supply.
Write Complete
When the laser completes marking the program, a “write complete” signal equivalent to a
contact closure is sent to the external equipment. The "write complete" function output
accommodates 3-33 DC voltage @ 1-ampere max and is polarity sensitive.
Start Write Connections
Programmable Logic Controller (PLC)
This method requires connecting a PLC to the rear of the computer at the “start write”
connections. Connect the output of the PLC to the input of the “start write”. The PLC is
programmed to provide 3-33 VDC input pulse between 100ms-250ms in duration. After
connecting the PLC, the options.txt file must be changed in the software. The options.txt file
is located on the C drive at: c: drive/BCLC/LMS/LASERHI/options.txt. Open the file and
change “IOIGNOR” from “0” to “1”.
External Power Supply
This method requires connecting an external power supply to the rear of the controller at the
“start write” connections. After connecting the power supply, the options.txt file must be
changed in the software. The options.txt file is located on the C drive at: c:
drive/BCLC/LMS/LASERHI/options.txt. Open the file and change “IOIGNOR” from “0” to “1”.
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