BK Precision 8500B Series, Programming Manual

Page: 7 / 63

7
1.3 *ESR?
This query reads the Standard Event Status Event register. Reading the register clears it. The bit configuration of this
register is the same as the Standard Event Status Enable register (see *ESE). See chapter “Programming the Status
Registers” for a detailed explanation of this register.
Query Syntax *ESR?
Parameters None
Query Response <NR1> (register value)
Related Commands *CLS *ESE *ESE? *OPC
1.4 *IDN?
This query requests the electronic load to identify itself. It returns the data in four fields separated by commos.
Query Syntax *IDN?
Parameters None
Query Response B&K Precision, BK8510B, 803326011737720001, 1.45
n
1.5 *OPC
This command causes the interface to set the OPC bit (bit 0) of the Standard Event Status register when the electronic
load has completed all pending operations. (See *ESE for the bit configuration of the Standard Event Status registers.)
Pending operations are complete when:
•
All commands sent before *OPC have been executed. This includes overlapped commands. Most commands are
sequential and are completed before the next command is executed. Overlapped commands are executed in parallel
with other commands. Commands that affect trigger actions are overlapped with subsequent commands sent to the
electronic load. The *OPC commandprovides notification that all overlapped commands have been completed.
•
All triggered actions are completed and the trigger system returns to the Idle state.
*OPC does not prevent processing of subsequent commands but Bit 0 will not be set until all pending operations are
completed. The query causes the interface to place an ASCII "1" in the Output Queue when all pending operations are
completed.
Command Syntax *OPC
Parameters None
Query Syntax *OPC?
Query Response <NR1>
Related Commands *TRIG *WAI
1.6 *PSC
This command is used to control whether the electronic load will generate a service request when power on again.
1 OR ON: When the load power on, status byte enable register, operater event enable register, query event enable register
and standard event enable register will be cleared.