300Troubles Causes MeasuresThe sending command isnot accepted by the lasermarker. (NAK response)DIP switch No. 2 on back of lasermarker is off.To control the following commands with the serialcommunication, turn ON DIP switch No. 2.• Laser Control [LSR]• Shutter Control [SHT]• Laser Check Radiation [SPT]• Guide LD Indication [GID]• Power Check [PWR]“Reception mode ON” is not set forcommand reception permission (MKMcommand)The laser marker does not accept commandsexcept the following unless it is in the “receptionmode ON” status.For command transmission, set “reception modeON” for “command reception permission (MKMcommand)”.• 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]• Error code [ECR]Alarm or error occurs.All commands except the following are refusedwhile 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] (for closing motiononly)• Command Reception Permission [MKM](Only for reception mode ON and receptionmode readout)Two or more command data aretransmitted at the same time.After sending the command, confirm the responsedata from the laser marker. Do not send the nextcommand before receiving the response.OthersTroubles Causes MeasuresLaser is emitted atunintended timing.Photoelectric sensor for marking triggersignal malfunctions.Fumes may cause malfunction of photoelectricsensor for marking trigger signal.• Install dust collector.• Check that dust collector works well.Date is reset. Internal battery has run out.Contact failure may also be a cause of thissymptom. When laser marker have been in usefor five years or more, internal battery is easy torun out.Contact our sales office for replacement ofinternal battery.ME-LP400V-OP-6
