Watlow PPC-2000 - Manual (Page 195)

PPC-2000 User’s Guide Chapter 5: LogicPro and Modbus Reference
Doc.# 30002-00 Rev 2.3 Watlow Anafaze 169
Sample Time
Time, in milliseconds, between scans for this input, as last
reported by the analog input driver. This is a read-only
parameter.
Input, Raw Counts
Actual raw counts read during the last scan for analog and
counter inputs.
Input Value
Fully linearized and filtered input reading in engineering
units: degrees for temperature inputs or specified engineering
units for linear inputs. Input values are copied to the process
variable register for channels with this input chosen as the
Process Variable Source. Units depend on Input Type.
Input Status
This read-only register contains information about the sensor.
Table 5.9 lists and describes the possible values for the
parameter.
Table 5.9 Input Status
Input Type
Specify the sensor type. Table 5.10 on page 170 shows the
default sensor ranges for the various inputs. All Input Value
registers store integers. In order to provide the desired
precision for many Input Types, the integer stored in the register
may be in tenths of a degree or hundredths of a millivolt. For
example, if an input is set to input type 6 and the Input Value
register contains a value of 2506, the actual measure value is
25.06mV because the values in the register are in units of
hundredths of a millivolt.
Value Input Status
0 No problems
1 Open sensor
2 Shorted RTD sensor
8
Common mode overvoltage. There is too much noise on
the sensor to make an accurate reading.
16
Ambient temperature error. Temperature is outside con-
troller's operating range.