Rockwell Automation 1790D-NOV2/TNOV2 CompactBlock LDX Analog Modules - Manual (Page 38)

Publication 1790-UM001A-EN-P - March 2002
3-4 Module Data, Status, and Channel Configuration for Analog Input Modules
The data table below shows the structure for an analog base module
with two (2) of the following 8-input modules:
•
1790-8BV8BX/-T8BV8BX modules,
•
1790-T8A0X discrete expansion modules
or one (1) of the following 16-input modules:
•
1790-16BV0X/-T16BV0X discrete expansion modules
1790D-N4C0/-TN4C0, 1790D-N4V0/-TN4V0 Input Data File with 16-Bit
Discrete Expansion Module(s)
Word/Bit Descriptions
Word Bit Position
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 Not Used Analog Input Data Channel 0
1 Not Used Analog Input Data Channel 1
2 Not Used Analog Input Data Channel 2
3 Not Used Analog Input Data Channel 3
4 Not Used S3 S2 S1 S0
5 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Word Decimal Bit Description
Read Word 0 Bits 00-11 Channel 0 input data
Bits 12-15 Not used: Set to 0
Read Word 1 Bits 00-11 Channel 1 input data
Bits 12-15 Not used: Set to 0
Read Word 2 Bits 00-11 Channel 2 input data
Bits 12-15 Not used: Set to 0
Read Word 3 Bits 00-11 Channel 3 input data
Bits 12-15 Not used: Set to 0
Read Word 4 Bits 00-03 Status bits for individual channels - Bit 00 corresponds to input
channel 0, bit 01 corresponds to input channel 1 and so on.
When set (1) indicates:
•
No field power
•
Open wire (4-20mA current input only)
•
Under range (4-20mA current input only)
•
Recoverable module fault (whole channel to be set)
•
Unrecoverable module fault (whole channel to be set)
Bits 04-15 Not used: Set to 0
Read Word 5 Bits 00-15 Discrete Input expansion data