3.4 Status reporting
Temperature module TED8xxx / page 64
3.4.3 Status byte register (STB)
The bits of this register are showing the status of the PRO8000 (-4) / PRO800.
RQS
RQS: Request service message: Shows, that this device
has asserted SRQ (read via serial poll).
MSS
Master summary status: Shows that this device requests a
service (read via
"*STB?"
).
MAV
(Message AVailable) This bit is high after a query request,
as a result "waits" in the output queue to be fetched. It is
low, if the output queue is empty.
DES
(Device Error Status) This bit is high after a device error
occurred. Which device errors will set this bit is defined
with the EDE.
EAV
(Error AVailable) This bit is high as long as there are
errors in the error queue.
FIN
(command FINished) This bit is high, after a command has
finished and all bits of the STB have been set.
The STB can be read directly with the command
"*STB?".
The content of the STB
can not be set. The bits are active high.
All bits except bit 6 of the STB can be used to assert a service request (SRQ)
#
(Please refer to 3.4.5). Alternatively the SRQ can be recognized using the command
"*STB?"
(Please refer to 3.4.6) or by serial poll (Please refer to 3.4.7).
3.4.4 Service request enable register (SRE)
The bits of the SRE are used to select, which bits of the STB shall assert an SRQ.
Bit 0, 1, 2, 3, 4, 5 and 7 of the STB are related to the according 7 bits of the SRE by
logical “AND”. These 7 results are combined by a logical "OR", so that any "hit" leads
to a logical 1 in bit 6 of the STB and asserts an SRQ.
