December 2019 64 LDC-3706 Series Laser Controller
*ESR?
Standard Event Status Register Query
Description Determine the contents of the standard event status register
Notes Reading this register clears the contents. The response is a value between 0 and 255, representing the bits of
the standard event status register when expressed in base 2 binary format.
The event bit is set when a specific event occurs:
Bit 0 Operation Complete is set when all pending device operations have been finished after
*OPC common command has been executed
Bit 1 Unused and always reports 0
Bit 2 Query Error means that data in the output has been lost or that none was available
Bit 3 Device-Specific Error is an error has occurred that is neither a command query or
execution error
Bit 4 Execution Error means a parameter was evaluated to be outside the legal input range or
capability
Bit 5 Command Error means a command could not be interpreted by the parser
Bit 6 Unused and always reports “0” Bit
Bit 7 Power On indicates that an off-to-on transition has occurred in the power supply
*CLS will clear this register
Examples *ESR? A response of 32 means a command error has occurred
*IDN?
Instrument Identification
Description Requests the instrument to identify itself
Notes Returns a string of instrument identification information. The string contains a comma separated list of
manufacturer, model number, serial number, and firmware revision.
Examples *IDN? Responds with “ILX Lightwave,LDC-3706,37061111,1.00-1.00”
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