Rockwell Automation Publication 1790-UM001B-EN-P - April 2021
35
Chapter 4 Module Data, Status, and Channel Configuration for Analog Output Modules
•
1790-TOW8X discrete expansion module
shows the structure for an analog base module with two of the
following 16-output modules:
•
1790-OB16X, 1790-TOB16X discrete expansion modules
•
1790-OV16X, 1790-TOV16X discrete expansion modules
Analog Output Data Format
Analog output data is presented as raw/proportional. The full 12-bit resolution
is used over the entire span of the output full scale range, as shown in
Table 26 - 1790D-N4C0, 1790D-TN4C0, 1790D-TN4V0 Output Data File with 24-Bit Discrete
Expansion Module
Word
Bit Position
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
Not Used
Analog Output Data Channel 0
1
Not Used
Analog Output Data Channel 1
2
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
3
Not Used
D23
D22
D21
D20
D19
D18
D17
D16
Table 27 - Word/Bit Description
Word
Decimal Bit
Description
Write Word 0
Bits 00…11
Channel 0 output data
Bits 12…15
Not used: Set to 0
Write Word 1
Bits 00…11
Channel 1 output data
Bits 12…15
Not used: Set to 0
Write Word 2
Bits 00…15
First discrete output expansion data
Write Word 3
Bits 00…07
Second discrete output expansion data
Bits 08…15
Not used: Set to 0
Table 28 - 1790D-N4C0, 1790D-TN4C0, 1790D-TN4V0 Output Data File with 32-Bit Discrete
Expansion Module
Word
Bit Position
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
Not Used
Analog Output Data Channel 0
1
Not Used
Analog Output Data Channel 1
2
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
3
D31
D30
D29
D28
D27
D26
D25
D24
D23
D22
D21
D20
D19
D18
D17
D16
Table 29 - Word/Bit Description
Word
Decimal Bit
Description
Write Word 0
Bits 00…11
Channel 0 output data
Bits 12…15
Not used: Set to 0
Write Word 1
Bits 00…11
Channel 1 output data
Bits 12…15
Not used: Set to 0
Write Word 2
Bits 00…15
First discrete output expansion data
Write Word 3
Bits 00…15
Second discrete output expansion data
Table 30 - Bit Resolution
Module
Output Full Scale
Range
HEX Data Range
Decimal Data Range Output Resolution
1790D-TNOV2
0…10V DC
0000
…
0FFF
0
…
4095
2.44 mV
1790D-N0C2
1790D-TNOC2
0…20 mA
0000
…
0FFF
0…4095
4.88
A
Содержание Allen-Bradley 1790D-N0C2
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