Honeywell Series 8 I/O - Table 52 Status Output Settings; Table 53 Setting DOTYPE to ONPULSE or OFFPULSE

6. Series 8 I/O Configuration
6.10. Defining Digital Output Channel Blocks
R500 Series 8 I/O User's Guide 197
April 2017 Honeywell
TIP
Standalone Digital Output channels configured for On-Pulse or Off-Pulse are
not supported. These blocks must have a parameter connection to an
upstream block. SCM writes or other writes using Program access level are
not permitted.
The Status Output (SO) setting is impacted by the ONPULSE and OFFPULSE
parameters as indicated in the following table.
Table 52 Status Output settings
Parameter
Status Output (SO) setting
If SO is set to 0.0
ONPULSE
On - for specified duration
SO is immediately set to OFF
OFFPULSE
Off - for specified duration
SO is immediately set to ON
To provide consistent and safe behavior, the following occurs when setting DOTYPE to
either ONPULSE or OFF PULSE.
Table 53 Setting DOTYPE to ONPULSE or OFFPULSE
If
Then
MODE is MAN
the ONPULSE and OFFPULSE parameters only
accept operator writes. (Program access level writes
and all other writes are NOT accepted.)
operator access level writes to SO are accepted and
writing SO terminates an active pulse.
PTEXECST is ACTIVE
changing MODE to CAS sets the output to the
quiescent state.
PTEXECST is ACTIVE
always sets the output to the quiescent state.