Panasonic LP-M Series Serial Communication Manual page 176

Troubles
The sending command is
not accepted by the laser
marker. (NAK response)
176
Causes
DIP switch No. 2 on back of laser
marker is off.
"Reception mode ON" is not set for
command reception permission (MKM
command)
Alarm or error occurs.
Two or more command data are
transmitted at the same time.
ME-LPMSZ-SR-9
Measures
To control the following commands with the serial
communication, turn ON DIP switch No. 2.
• Laser Control (LSR)
• Shutter Control (SHT)
• Laser Check Radiation (SPT)
• Test Marking (TST)
• Guide LD Indication (GID)
• Laser Power Measurement (PWM)
• Power Check (PWR)
The laser marker does not accept commands
except the following unless it is in the "reception
mode ON" status.
For command transmission, set "reception mode
ON" for "command reception permission (MKM
command)".
• File Change (No. Specified) (FNO)
• File Change (Comment Specified) (FNN)
• Shutter Control (SHT)
• Command Reception Permission (MKM)
• Laser Control (LSR)
• Counter Reset (CTR)
• Status Request (STS)
• Marking Trigger (MRK)
• Serial Data Input (SIN)
• Serial Offset (SEO)
• Error Code (ECR)
All commands except the following are refused
while alarm or error is active.
When alarm occurred:
• Status Request (STS)
• Error Code (ECR)
When warning occurred:
• Status Request (STS)
• Error Code (ECR)
• Shutter control (SHT) (Only for closing request,
and readout)
• Command Reception Permission (MKM) (Only
for reception mode ON and reception mode
readout)
After sending the command, confirm the response
data from the laser marker. Do not send the next
command before receiving the response.