Keysight Technologies E3646A - Using SRQ to Interrupt the Bus Controller; Determining When a Command Sequence Is Completed

Remote Interface Reference 3
SCPI Status Registers
E364xA User’s and Service Guide 117
Using SRQ to interrupt the bus controller
1 Send a device clear message to clear the power supply’s
output buffer (for example, CLEAR 705).
2 Clear the event registers with the *CLS (clear status)
command.
3 Set up the enable register masks. Execute the *ESE
command to set up the Standard Event register and the
*SRE command for the Status Byte.
4 Send the *OPC? (operation complete query) command and
enter the result to ensure synchronization.
5 Enable your bus controller’s IEEE- 488 SRQ interrupt.
Determining when a command sequence is completed
1 Send a device clear message to clear the power supply’s
output buffer (for example, CLEAR 705).
2 Clear the event registers with the *CLS (clear status)
command.
3 Enable the “Operation Complete” bit (bit 0) in the
Standard Event register by executing the *ESE 1
command.
4 Send the *OPC? (operation complete query) command and
enter the result to ensure synchronization.
5 Execute your command string to program the desired
configuration, and then execute the *OPC (operation
complete) command as the last command. When the
command sequence is completed, the “Operation
Complete” bit (bit 0) is set in the Standard Event register.
6 Use a serial poll to determine when bit 5 (Standard
Event) is set in the Status Byte summary register. You
could also configure the power supply for an SRQ
interrupt by sending *SRE 32 (Status Byte enable
register, bit 5).