Instruction Manual

Chapter 5: LogicPro and Modbus Reference PPC-2000 User’s Guide
168 Watlow Anafaze Doc.# 30002-00 Rev 2.3
Analog and Encoder Input Parameters
Table 5.8 lists the parameter number (#), range, and first and
last Modbus addresses for each analog input parameter. These
values are used when accessing analog input parameters with
third-party software, operator interface terminals or LogicPro
programs.
The range of some of the parameters depends on which input
type is selected. See Table 5.10 on page 170 for a list of the
input types and their corresponding ranges. While all the input
parameter values are 16-bit integers, many, such as Input Type,
are numerical representations of settings that have special
meanings to the controller. See the tables under the
corresponding parameter descriptions for explanations of the
possible settings.
Note that while any analog input can be assigned to any control
channel, the channel number that an input is assigned to has
no effect on the input variable’s data table address.
Table 5.8 Input Parameters
Parameter # Range
Modbus
Address
Hex
Address
Notes
Sample Time 74
200-700 ms
typical
31801-32200 708-897
Input,
Raw Counts
72 0-65535 31201-31600 4B0-63F
Input Value 67
-32768 to
+32767
30801-31200 320-4AF
Input Status 75 0-16 32201-32600 898-A27 See
Table 5.9
Input Type 60 0-60 41751-42150 6D6-865 See Table 5.9
Input Filter 61 0-255 42151-42550 866-9F5
Temperature
Scale
64 0-1 42951-43350 B86-D15 See
Table 5.11
Input Signal Low 71
-32768 to
+32767
44551-44950 11C6-1355 See Table 5.11
Input Signal High 70
-32768 to
+32767
44151-44550 1036-11C5 See Table 5.11
Process
Variable Low
69
-32768 to
+32767
43751-44150 EA6-1035
Process
Variable High
68
-32768 to
+32767
43351-43750 D16-EA5
PV Offset/
Counter Reset
78
-32768 to
+32767
44951-45350 1356-14E5