Watlow PPC-2000 - Manual (Page 154)

Chapter 3: Operating with AnaWin 3 PPC-2000 User’s Guide
128 Watlow Anafaze Doc.# 30002-00 Rev 2.3
The Processor module, Digital I/O, and Encoder In Analog
Output modules accept pulse inputs. Both the count and
frequency of each pulse signal are listed as inputs. Pulse input
names identify the PPC, module, I/O type and module I/O
number and indicate counter (C) or frequency (F). See example
in Figure 3.17.
Figure 3.17 Pulse Input Names
Soft inputs appear on the Inputs spreadsheets. A soft input can
be selected as the PV Source of a channel when that channel is
to get its feedback from a logic program. There are 50 soft
inputs in a PPC. These inputs are not associated with any
physical I/O. A value written to a soft input by a logic program
is treated as a raw input and is scaled and filtered according to
its input parameter settings. If a soft input is selected as a PV
Source, the input type will be set automatically to Linear
(counts). Figure 3.18 illustrates how soft input names appear in
the spreadsheet.
Figure 3.18 Soft Input Names
Channel outputs appear on the Inputs spreadsheets. A channel
output can be selected as the Set Point Source of a channel for
cascade control applications. (See Cascade Control on page
105.) There are 48 channel outputs in a PPC. These inputs get
their value from the sum of the Heat Output % and Cool Output %
of each channel. Channel outputs are treated as raw inputs and
are scaled and filtered according to the input parameter
settings. Figure 3.19 on page 129 illustrates how channel
output names appear in the spreadsheet settings.
PPC1:Proc 0.1.2 F
module address
controller number
module type
Frequency/Counter
module I/O number
I/O type
PPC1:Soft Input1
controller number
soft input number