Bird-technologies 6091P Manual de usuario descargar pdf (Pagina 48)

Bird Model 6091 Calorimeter

Serial Polling Enable/Disable (SPE/SPD)

Function

Issued by controller to enable or disable the serial poll sequence.

CAUTION

During remote operation, periodically monitor the bus service request line. Failure to

detect the service request can result in major equipment damage.

Remarks

SPE command puts all devices in serial poll mode waiting to be addressed.

When addressed device issues status byte to controller.

State of bit 6 of status byte determines service requirements. (Refer to the status

byte section in this appendix.)

bit6=1 service required

bit6=0 noservice required

Service request line not asserted for Command Error (bit 0) or Command Com-

plete (bit 3) conditions until after device is triggered.

SPD command clears status byte and ends serial poll sequence.

Statements

National GPIB-PCII HP 200/300

IBRSP (UD%,SPR%) P=SPOLL(724)

Note: Decimal value of

status byte is returned

in variable SPR%.

Note: Decimal value of

Status byte is returned in

variable P.

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Bird-technologies 6091P Manual de usuario Pagina 48