DH Instruments PPC3 - Ready Status Register; Table 20. 8 Bit Ready Status Register

PPC3™ OPERATION AND MAINTENANCE MANUAL
© 2002-2007 DH Instruments, a Fluke Company Page 116
EXE Execution Error (Bit 4)
Indicates if a remote program message cannot be processed due to device
related condition.
DDE Device Dependent Error (Bit 3)
Indicates that an internal error has occurred in the PPC3 such as a transducer
time-out.
QYE Query Error (Bit 2)
Indicates that an error has occurred in the protocol for program message
communications. This is typically caused by a program message being sent to
the PPC3 without reading a waiting reply.
RQC Request Control (Bit 1)
This bit is not supported as the PPC3 cannot become the active controller in charge.
OPC Operation Complete (Bit 0)
Indicates that the PPC3 has completed all requested functions.
4.5.4 READY STATUS REGISTER
The PPC3 contains an 8 bit Ready Status Register that reflects specific PPC3 measurement
and generation ready events. Enabled events in this register will set or clear the RSB bit of
the Status Byte Register.
Table 20. 8 Bit Ready Status Register
N/A
(128)
N/A
(64)
N/A
(32)
N/A
(16)
N/A
(8)
MEAS
(4)
NRDY
(2)
RDY
(1)
This register can be read using the “*RSR?” query, Each of these status bits can set the
RSB bit of the Status Byte Register, causing a SRQ to occur IF the RSB bit is enabled to do so.
The Standard Event Status Enable Register (“*RSE” program message ) determines which
of these flags are able to assert the RSB bit. The description of these bits are given as:
MEAS Measurement ready (Bit 2)
Indicates that the PPC3 has completed a Q-RPT measurement.
NRDY Generation Not Ready (Bit 1)
Indicates that the PPC3 made a transition from Ready to Not Ready as defined
by the control settings (see Section 3.2.2).
RDY Generation Ready (Bit 0)
Indicates that the PPC3 has reached a target pressure and is Ready as defined
by the control settings (see Section 3.2.2).