Rockwell Automation T8094 8000 Series TMR System Safety Manual User Manual
Page 118
SAFETY MANUAL
D oc N umber T8094
I ssue 27 – June 2013
Page 97 of 103
the user application.
Data type:
analogue
Direction:
From RMET to UNPACK16
Values:
0 to 65,535 (bit-packed integer)
9.10.6.20 PACK16, a packing of 16 bits
Purpose:
PACK16 carries 15 digital output channels and a test channel. It is not for direct
use by the user application.
Data type:
analogue
Direction:
PACK16 to RMET
Values:
0 to 65,535 (bit-packed integer)
9.10.6.21 PCK16, a packing of 16 bits
Purpose:
PACK16 carries 15 digital output channels and a test channel. It is not for direct
use by the user application.
Data type:
analogue
Direction:
RMET to UNPACK16
Values:
0 to 65,535 (bit-packed integer)
9.10.6.22 RAT, request autotest
Purpose:
The RAT (request autotest) output tells the application when there is a
discrepancy between duplex digital inputs.
Data type:
Boolean
Direction:
From DIPT to application
Values:
TRUE – the inputs to a duplex input module have been inconsistent for more
than one application cycle when a test is not in progress
Otherwise FALSE
Notes:
The application must respond to RAT by using it to start a test of the input
modules to find out which half of the duplex input is faulty, and find a solution to
the discrepancy.
9.10.6.23 RST, reset
Purpose:
The RST (reset) parameter removes all latched fault states in its ITSTM or
OTSTM.
Data type:
Boolean
Direction:
From application to ITSTM
From application to OTSTM
Values:
TRUE
FALSE
Default: FALSE
Notes:
This input is edge triggered. On a rising edge the latched fault states are reset.
9.10.6.24 SC, short circuit
Purpose:
The SC (short circuit) output tells the application when the value of the process
input is larger than the SCTHR
Data type:
Boolean
Direction:
From LFLT to application
Values:
TRUE – the process input is larger than the SCTHR
Otherwise FALSE
9.10.6.25 SCTHR, short circuit threshold
Purpose:
The SCTHR (short circuit threshold) determines the high threshold for the
analogue input tested by the LFLT
Data type:
analogue
Direction:
From application to LFLT
Values:
41 to 4,054