Rockwell Automation Allen-Bradley 1769-IF4, User Manual

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Publication 1769-UM002B-EN-P - July 2005
3-22 Module Data, Status, and Channel Configuration for the Input Modules
The configuration file can also be modified through the control program, if
supported by the controller. The structure and bit settings are shown in
Channel Configuration on page 3-22.
Channel Configuration
Each channel’s configuration words consist of bit fields, the settings of which
determine how the channel operates. See the table below and the descriptions
that follow for valid configuration settings and their meanings. The default bit
status of the configuration file is all zeros.
Table 3.14 Bit Definitions for Channel Configuration Words
Define To Select Make these bit settings
15 14 13 12 11 10 9 8 7-4
3 2 1 0
Input Filter
Selection/
-3 dB
Frequency 60 Hz 0 0 0 0
50 Hz 0 0 0 1
10 Hz 0 0 1 0
250 Hz 0 0 1 1
500 Hz 0 1 0 0
Enable
Interrupt Enable 1
Disable 0
Process
Alarm
Latch Enable 1
Disable 0
Enable
Process
Alarms Enable 1
Disable 0
Enable
Channel Enable 1
Disable 0
Table 3.15 Bit Definitions for Input Range and Input Data
Define Indicate this These bit settings
15-11
10 9 8 7-4 3 2 1 0
Input
Range
Select -10 to +10V dc 0 0 0 0
0 to 5V dc 0 0 0 1
0 to 10V dc 0 0 1 0
4 to 20 mA 0 0 1 1
1 to 5V dc 0 1 0 0
0 to 20 mA 0 1 0 1
Input
Data
Format
Select Raw/Proportional
Counts 0 0 0
Engineering Units 0 0 1
Scaled for PID 0 1 0
Percent Range 0 1 1