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Rockwell Automation 1492-CM800-LA003 Field Wire Conv. Module for Modicon B872-100 to 1756-OF6CI User Manual

I. module description, Ii. module installation, Iii. conversion module compatibility matrix

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Field Wire Conversion Module for Modicon B872-100 Analog Current Output
to 1756-OF6CI Analog Current Output

(Cat 1492-CM800-LA003)

10000021838

(Version 00)

Printed in Germany

Local language (French, Italian, German & Spanish) versions of this document can be downloaded by going to www.ab.com.
In the left margin click on Publications Library and Literature Library. In the Search Area (right margin), Search by Catalog
Number and in the Search box type in the catalog number of the conversion system component.

I. Module Description

The 1492-CM800-LA003 conversion module provides field wire signal conversion from a Modicon® B872-100,
analog, 4-channel, individually isolated current output module to a ControLogix 1756-OF6CI, analog, 6-channel,
individually isolated current output module. The conversion module provides the mating connections to the B872-100
swing-arm (terminal block) with the attached field wires. It routes those signals, via its 25-pin, D-shell connector and
a 1492-ACABLEY pre-wired cable to the compatible terminals of the 1756-OF6CI (refer to the Wiring Diagram on
page 2).

II. Module Installation

The 1492-CM800-LA003 conversion module must be installed in a 1492 conversion base-plate and cover-plate
assembly. The installation of the module into the assembly is explained in the Installation Manual that ships with the
conversion assembly. For a list of compatible assemblies refer to Appendix A.

III. Conversion Module Compatibility Matrix

This is the cable length in meters and tenths of meters (e.g. 015 = 1.5 meters). Recommended cable

length is 003 (00.3 meters).

Conversion Module

Compatible 800

Output Module

Compatible 1756

Output Module

Required 1492 Cable

1492-CM800-LA003 B872-100 current output 1756-OF6CI current output

1492-ACABLEY

25pin D-shell connector for 1492-ACABLEY

Mating connector for
B800 Terminal Block

1492-CM800-LA003 Conversion Module

De-energize and lockout any and all power to all I/O field devices connected to the Modicon 800 I/O
housing, and the power to the 800 I/O housing itself. Ensure all power is de-energized and locked out to
any device in the control cabinet where the conversion is to be performed. Ensure work is performed by
qualified personnel.

WARNING

4

12
11

24
23

31

19
20
21
22
27
28

+
-

3

5

14

7
8

10
15

17
18

26

6

34

9

16

29
30
35
36
37
38
1
2
39

Not Used

Frame Ground

Frame Ground

Current Source 1

13
25
24
23
22
21
19
18
17
16
15
14

SH

12
11
9

6

4
2

20

40

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Not Used

Monitor 2

Frame Ground

Frame Ground

1

OUT-0
RTN-0

5

OUT-1

2

RTN-1

6

OUT-2

7

RTN-2

11

OUT-3

8

RTN-3

12

RTN-4

19

OUT-4

15

Not Used

14

ALT-3

10

Red
Black

White

Black

Green

Black

Blue

Black

RTN-5

20

OUT-5

16

Yellow

Black

Brown
Black

Orange
Black

Current Source 1

Current Sink 1

13

Current Source 2
Current Source 2

Current Sink 2

25

Current Source 3
Current Source 3

Current Sink 3

33

Current Source 4
Current Source 4

Current Sink 4

32

Monitor 1

Monitor 3
Monitor 4