Embedded Analog I/O Modules Data Arrays; Input Array - Allen-Bradley 1769-L16ER-BB1B User Manual

Chapter 8 Use I/O Modules with CompactLogix 5370 L2 Controllers
Embedded Analog I/O
Modules Data Arrays
Table 16 - CompactLogix 5370 L2 Controller Embedded Analog I/O Module Input Data Array
Word 15 14 13
0 S
1 S
2 S
3 S
4 Nu
5 Nu UI4
6 LI3 HI3
7 S
8 S
9 S
10 Nu
204
The section describes the data table structures for the embedded analog I/O
modules on the CompactLogix 5370 L2 controllers. The embedded analog I/O
modules have arrays for the following data:
• Input data
• Output data
• Configuration data
You can access the data via the tags in the application.
IMPORTANT

Input Array

The input data array for the embedded analog I/O module contains 11 words as
described in
12 11 10
OI4 OC4 OC3 OC2
UI3 OI3 LI2 HI2
UO1 OO1 Nu
Rockwell Automation Publication 1769-UM021G-EN-P - October 2015
The analog I/O modules data structures apply to only the 1769-L24ER-QBFC1B
and 1769-L27ERM-QBFC1B controllers.
The 1769-L24ER-QB1B controller does not have an embedded analog
I/O module.
Table 16. This array is read-only and the default value for all bits is 0.
Bit
9 8 7 6
Analog Read (Input) Data Value Channel 0
Analog Read (Input) Data Value Channel 1
Analog Read (Input) Data Value Channel 2
Analog Read (Input) Data Value Channel 3
Timestamp Value
OC1 OC0 Nu
UI2 OI2 LI1 HI1
Cold Junction Compensation Value
Output Data Loopback/Echo Channel 0
Output Data Loopback/Echo Channel 1
UO0 OO0
5 4 3 2
SI4 SI3 SI2
UI1 OI1 LI0 HI0
Nu
1 0
SI1 SI0
UI0 OI0
SO1 SO0