F.W. Bell 5280 User Manual

STATUS BYTE AND REQUEST FOR SERVICE (RQS)
A bit in the STATUS BYTE called RQS (request for service) sets whenever an event occurs that requires the attention of the computer. The
RQS bit can set if any of the summary bits from the MEASUREMENT EVENT, OPERATION EVENT, STANDARD EVENT or
QUESTIONABLE EVENT registers are set, or if an error message exists. The STATUS ENABLE register is a mask register that is used to
allow any of these conditions to set the RQS bit. Setting any bit in the STATUS ENABLE register to “1” will allow a corresponding “1” in the
STATUS BYTE register to set the RQS bit. These registers are depicted in Figure 4-2.
Figure 4-1
Condition, Event and Enable Registers
Figure 4-2
Status Byte and Enable Registers
4-5

F.W. Bell 5280 Specifications

General

Brand	F.W. Bell
Model	5280
Category	Measuring Instruments
Language	English