Determining Status Digital Input Channel; Figure 55 Digital Input Conversion - Honeywell Series 8 I/O User Manual

6. Series 8 I/O Configuration
6.9. Defining Digital Input Channel Blocks

Determining Status Digital Input channel

For this digital input type, the PVAUTO value represents the state of the raw input signal
after the direct/reverse conversion is performed. The status digital input channel is
selected by entering Status for the DITYPE parameter. Also, this block can be configured
for PV source selection.
The current PV state is available as an input to logic blocks and other Experion control
functions blocks.
PV Source Selection - The PV source parameter (PVSOURCE) option determines the
source of the PV for a status input channel. The source can be as follows:

the PV input from the field (PVRAW),

the PV state entered by the operator (PV manual), or

it can be supplied by a user program (PV substituted).
PVSOURCE has no effect on the latched options of the digital input channel. If
PVSOURCE is AUTO, PV tracks PVRAW.
192

Figure 55 Digital input conversion

Series 8 I/O User's Guide
Honeywell
R500
April 2017