ST2515 Operation Manual
83
Descriptions for each bit of the standard status byte register are shown as follows:
For example: WrtCmd(“*STB?”);
The *OPC command equals to set the OPC bit of the standard event status register when
ST2515 finishes all parameter measurements. Ever since all pending operations have been
completed, this command will inform the instrument to add an ASCII number “1” (decimal
number: 49) into the output buffer.
Command syntax: *OPC
For example: OUTPUT 717;“*OPC”! Set the OPC bit of the instrument when the last command is
done.
Query syntax: *OPC?
Return format: 1 <NL^END>
Where,
1 ASCII number 1 (decimal number: 49)
For example: WrtCmd(“*OPC?”)
Bit number Description
7
6
5
4
3-0
Operation Status Register Summary Bit
RQS(Request Service) Bit
Standard Event Status Register Summary Bit
MAV(Message Available) Bit
Always 0(zero)
