Remote Interface Reference 3
E364xA User’s and Service Guide 141
Using *OPC to signal when data is in the output buffer
Generally, it is best to use the “operation complete” bit (bit 0) in the Standard
Event register to signal when a command sequence is completed. This bit is set in
the register after an *OPC command has been executed. If you send *OPC after a
command which loads a message in the power supply’s output buffer (query
data), you can use the “Operation Complete” bit to determine when the message
is available.
However, if too many messages are generated before the *OPC command
executes (sequentially), the output buffer will fill and the power supply will stop
processing commands.
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