Rockwell-automation 1746-NI8 SLC 500 Analog Input Modules User Manual Instrukcja Użytkownika Strona 43

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5–2
Channel Configuration, Data, and Status
Publication
17466.8 - April 1997
The channel configuration word consists of bit fields, the settings of
which determine how the channel will operate. See the chart below
and the descriptions that follow for configuration information.
Appendix B contains a configuration worksheet.
After determining the configuration for each channel, follow the
steps outlined in chapter 2, Quick Start, or in chapter 6, Ladder
Logic Configuration Examples, to enter this configuration data into
your ladder program and copy it to the 1746-NI8 module.
Channel Configuration Word (O:e.0 through O:e.11) - Bit Definitions
Bit(s)
Define
Make these bit settings in the Channel Configuration Word
Bit(s) Define
To Select
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SET
10V dc 0 0 0
SET
DIP
SWITCH
T
O
OFF
"
1-5V dc 0 0 1
T
O OFF"
FOR VOL
TAGE
0-5V dc 0 1 0
02
Input Type
FOR
VOL
TAGE
INPUT
0-10V dc 0 1 1
0-2 Input Type
SET
0-20 mA 1 0 0
SET
DIP
SWITCH
T
O
ON
"
4-20 mA 1 0 1
T
O ON"
FOR CURRENT
INPUT
20 mA 1 1 0
FOR
CURRENT
INPUT
0-1 mA 1 1 1
Engineering Units 0 0 0
ScaledforPID 0 0 1
Proportional Counts 0 1 0
35
Data Format
1746NI4 Data Format 0 1 1
3-5 Data Format
User Defined (Class 3) 1 0 0
User Defined (Class 3) 1 0 1
Illegal (configuration error)
Illegal (configuration error)
Zero 0 0
6 and 7
Open Circuit
Upscale 0 1
6 and 7 Open Circuit
Downscale 1 0
Illegal
No Filter 0 0 0
75 Hz 0 0 1
50 Hz 0 1 0
810
Filter
20 Hz 0 1 1
8-10
Filter
Frequency
10 Hz 1 0 0
qy
5 Hz 1 0 1
2 Hz 1 1 0
1 Hz 1 1 1
11
Channel
Channel Disabled 0
11
Channel
Enable
Channel Enabled 1
12-15 Unused
Unused
0 0 0 0
In
addition to programming the configuration word, you must also use the DIP switches to select voltage or current.
Ensure unused bits 12-15 are always be set to zeros.
Channel Configuration
Procedure
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