Xantrex Technology XDC manual Command *SRE Service-Request-Enable, *SRE?

Remote Operation

SCPI Commands for Digital Interfaces

Service Request Enable Register

The Service Request Enable Register allows the user to select the reasons for the power supply to issue a service request. The Service Request Enable Register allows the user to select which summary messages in the Status Byte Register may cause service requests.

To clear the Service Request Enable Register send "*SRE 0." The Power-on Status Clear command also determines if the Service Request Enable Register is cleared at power-on. A cleared register does not allow status information to generate a service request.

E.g.

Sending "*SRE 8" sets bit 3 of the Service Request Enable Register. This will cause the Summary bit of the Questionable Status register (bit 3) in the Status Byte to generate a service request message whenever it gets set.

Command: *SRE <Service-Request-Enable>, *SRE?

SCPI equivalent for multichannel use:

STATus[<channel>]:SREQuest:ENABle <status-enable>

STATus[<channel>]:SREQuest:ENABle?

Parallel Poll Enable Register

Each of the 16 bits in the Parallel Poll Enable register correspond to bits in the Status Byte. Each bit in the Parallel Poll Enable register is ANDed with its corresponding bit in the Status Byte and the resulting bits are ORed together to generate ist.

Therefore using the parallel poll enable register allows any single bit or combination of bits to control the ist message.

The Power-on Status Clear command determines if the Parallel Poll Enable Register is cleared at power-on.

E.g.

Sending "*PRE 8" sets bit 3 of the Parallel Poll Enable Register. This will cause the Summary bit of the Questionable Status register (bit 3) in the Status Byte to generate a TRUE ist message whenever it gets set.

Command: *PRE <status-enable>, *PRE?

Release 3.0 159