Panasonic LP-S Series Maintenance Manual page 158

Troubles
Serial communication
control fails
READY signal is not
turned to ON.
158
Causes
Communication parameter settings
are changed when the backup data is
restored to the laser marker.
Command data is not received from
external equipment.
Communication data format is
incorrect.
Alarm or error occurs.
Laser has not been pumped.
Internal shutter is closed.
LP-Mxxx-S type:
Since the returning to the original
position of the laser gate is not
performed correctly, the laser gate
cannot be opened.
LP-Mxxx-S type:
The laser gate is closed.
The changing operation of the file data
is unfinished.
Marking data is not sent to the laser
marker from the external devices, in
case of using Rank Function, External
Offset Function, or Serial Data Input
Function.
Under serial communication control:
Mark trigger signal is ON while the
command reception permission (MKM
command) is set to "Reception mode
ON".
ME-LPS-SSM-8
Measures
Check the communication parameter settings.
If Ethernet is used, confirm the IP address and
other parameters.
When the backup data is restored to the laser
marker, communication parameter settings are
overwritten with the backup data.
Using commercially available line monitor or
protocol analyzer, check if external equipment
transmits data.
Check if format of communication data command
transmitted from external equipment is correct.
• Check if start code STX (02: HEX) is placed at
beginning of transmitted data.
• Check if the delimiter is added to the end of the
transmission data. ([CR] (0D: HEX) or [CR+LF]
(0D: HEX 0A: HEX) for RS-232C, [CR] (0D:
HEX) for Ethernet)
Release the alarm or warning referring to the
measures for the corresponding error code.
Refer to "The laser is not pumped".
Open the internal shutter.
• When controlling the shutter by I/O signal,
turn off DIP switch No. 2 and turn on terminal
SHUTTER in terminal block.
• When controlling the shutter by serial
communication, turn on DIP switch No. 2 and
send shutter command (SHT).
• To change the DIP setting, the switch of the
laser marker should be set at power OFF state.
Input the laser gate control signals for the
returning to the original position after start-up of
the laser marker.
Input the control signal to [L-GATE OP IN] on
the laser gate terminal from the external control
device.
It takes from tens of msec. to several seconds to
complete the changing file data.
During that time, READY output is in OFF status.
Enter marking trigger signal after making sure that
[READY] output is on if you want to change file to
another one.
If rank, external offset and serial data functions
are enabled while marking conditions are not
yet specified, enter respective data per marking
cycle.
Enter marking trigger signal after making sure
that [READY] output is on or checking status of
READY using status request command.
Set "reception mode OFF" for command reception
permission (MKM command). Before entering
marking trigger signal, use status request
command [STS] to make sure that READY is on.