Rockwell Automation T8449 Trusted TMR 24V dc Valve Monitor Module - 40 Channel - Manual (Page 35)

Trusted
TM
Module T8449
Issue 13 Apr 10 PD-T8449 35
While the Valve Test State reports 1 (Test In Progress), the Time variables will be updated, but may
not be complete until the test is completed.
The Time variables are also used to report the elapsed time (in milliseconds) from the change of a
control output state until the feedback input state changes to the corresponding state. When the Valve
Test State is reported as 0 (Idle) or 4 (Test Abort). The Time variables will be updated for a maximum
of 32767ms after control output is changed. The same rules for entering a state more than once or
skipping a state from above are also enforced when recording the time for control output changes.
The Time variables are reported as integers with a maximum value is 32767. The Time variables are
cleared to 0 on the falling edge of a TEST signal, when the control output is changed, or when a test is
aborted for any other reason.
Feedback Input Voltage is used to report the voltage level as measured on the feedback input circuit.
The voltage is the median value taken from the triplicated module. The voltage level is reported as an
integer, with the units being
1 /
500
V. This may be used directly, scaled arithmetically or scaled using the
IEC1131 TOOLSET conversion tables.
Sampled ETIME is used to report the value of ETIME used for the current valve test. It is cleared to 0
on the falling edge of a TEST signal.
Sampled ESTATE is used to report the value of ESTATE used for the current valve test. It is cleared
to 0 on the falling edge of a TEST signal.
3.3. Sequence of Events Configuration
The Boolean variables from the DO / TEST board (Rack 1) and the Line Fault board (Rack 7) can be
configured for automatic Sequence of Events (SOE) logging. A Boolean variable is configured for SOE
during the variable definition in the Data Dictionary Editor. To select SOE, press the Extended Button
in the Boolean Variable Definition Dialog Box to open the Extended Definition Dialog. Then check the
box for Sequence of Events to enable the variable for automatic SOE logging.
In addition, the integer variables from the STATE board (Rack 2) can be configured for automatic
Sequence of Events (SOE) logging in a similar manner.
During operation, the output module automatically reports time-stamped change of state information
for the output data. The TMR Processor automatically logs change of state for configured SOE
variables into the system SOE Log. The SOE Log can be monitored and retrieved using the SOE
Collection Utility program running on the EWS.