Rockwell Automation T8094 8000 Series TMR System Safety Manual - Manual (Page 107)

SAFETY MANUAL
D oc N umber T8094
I ssue 27 – June 2013
Page 86 of 103
Term Meaning or origin Type Remarks
on slice B
FRQ frequency analogue the frequency of scheduled tests
HR hour (current time) analogue the hour part of the current time of day, usually
taken from the real time clock of the TrustedTM
controller
IP process input analogue output from termination assembly for an analogue
input to LFLT
IPA input A Boolean output from termination assembly for digital input
slice to DIPT
IPB input B Boolean output from termination assembly for digital input
slice to DIPT
IPV input verification Boolean output from DIPT
LF line fault Boolean output from LFLT to application
MDA monitor
discrepancy A Boolean output from termination assembly A to RMET
MDB monitor
discrepancy B Boolean output from termination assembly B to RMET
MTS manual test start Boolean input used to start a test sequence
OC open circuit Boolean output from LFLT to application
OCTHR open circuit
threshold analogue input configuration parameter to LFLT
OPA output A analogue coded output from RMET to control relay A, see
also PCK16
OPB output B analogue coded output from RMET to control relay B, see
also PCK16
PCK16 packing of 16 bits analogue coded output from RMET to UNPACK16
PACK16 packing of 16 bits analogue coded output from PACK16 to RMET
RAT request autotest Boolean output from DIPT to application
RST reset Boolean input, resets the latched autotest faults
SC short circuit Boolean output from LFLT to application
SCTHR short circuit
threshold analogue parameter to configure high threshold of LFLT
STM start time analogue the hour of the time of day when the first test starts
TA test active Boolean shows when any test sequence is active
TRA test relay A Boolean output, controls the autotest relay A
TRB test relay B Boolean output, controls the autotest relay B
9.10.4 Choosing and Using Function Blocks
9.10.4.1 General Instructions
1. The function blocks are supplied by Rockwell Automation. You must use the function
blocks as supplied as they are not accessible and cannot be changed.
2. The migrated application must annunciate fault detection status. This will enable faulty
hardware to be replaced within the mean time to repair used for the module PFD
calculation.
3. The function blocks do not find some invalid configuration parameters, such as some
enumerations out of range. You must make sure that your application sends satisfactory
configuration data to the function blocks.
4. After the state of an output changes, the Trusted TM controller must wait for a suitable
settling time before reading the input associated with monitoring the same output. To do