Honeywell Series 8 I/O - Defining the REDTAG settings

6. Series 8 I/O Configuration
6.6. Defining Channel blocks
R500 Series 8 I/O User's Guide 177
April 2017 Honeywell
Table 46 PV Source settings
If PVSOURCE is
Auto
 Analog Input channel's Range Checking and Filtering circuit provides PV, or
 Digital Input channel's PVAUTO parameter provides PV
Man
 PV can be entered manually, or
Sub
 PV can come from a sequence program
Additionally, the PVSRCOPT parameter determines if it is permissible to change the PV
source to a source other than Auto.
The following modes apply to the PVSRCOPT parameter.
Table 47 PVSRCOPT settings
Operating mode
Description
OnlyAuto
allows the PV to be set only Automatically
All
allows the manual setting of PV
Defining the REDTAG settings
The REDTAG parameter allows you to set channel as being "out of service" indicating
that this channel or its associated control loops requires repair, or is being repaired. Once
a channel is put in the red tag condition, its output is frozen at the last value.
REDTAG can only be set and cleared when:
 MODE = MAN
 MODATTR = Operator
Table 48 REDTAG settings
When channel is placed
in REDTAG condition
Result
Channel output
Is frozen at last value (including MODE and MODATTR)