Instruction Manual

Chapter 5: LogicPro and Modbus Reference PPC-2000 User’s Guide
200 Watlow Anafaze Doc.# 30002-00 Rev 2.3
Table 5.37 Digital I/O Uses
Digital I/O Parameters
Table 5.38 lists the parameter number (#), range, and first and
last Modbus addresses for each digital I/O parameter. These
values are used when accessing digital I/O parameters with
third-party software, operator interface terminals or LogicPro
programs.
All the digital I/O parameters are 1 bit values and, therefore,
have a range of 0-1. See the tables under the corresponding
parameter descriptions for explanations of the possible
settings.
Table 5.38 Digital I/O Parameters
State
This register stores a logical bit which together with the
corresponding Logic bit determines the physical state of digital
outputs and indicates the state of digital inputs. When writing
to these bits, the controller will ignore any data being written
to an I/O point configured as an input. Table 5.39 on page 201
lists and describes possible combinations of State and Logic
values.
Use PPC-2010 PPC-2040 PPC-2061 PPC-2062
PPC-2070
PPC-2072
PPC-2071
PPC-2073
Configurable I/O points 1-24 1-32 n/a n/a n/a n/a
Output only points 25-46 n/a 1-16 1-8 n/a n/a
Input only points n/a n/a n/a n/a 1-8 1-16
Pulse or counter inputs 1 1-2 n/a n/a n/a n/a
Digital outputs that may
be used as SDACs
41-45 n/a n/a n/a n/a n/a
Reserved outputs (Global
Alarm, CPU Watchdog)
47, 48 n/a n/a n/a n/a n/a
SDAC clock output 46 n/a n/a n/a n/a n/a
Parameter # Range
Modbus
Address
Hex
Address
State 130 0-1 00001-03560 0-DE7
Direction 132 0-1 01001-02000 3E8-7CF
Logic 133 0-1 02001-03000 7D0-BB7