Rockwell Automation 1492- 1771-N Series I/O to 1756 ControlLogix I/O - Manual (Page 3)

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Table 2a: Conversion Cables for Bulletin 1771-N Series I/O
III. Compatibility for I/O Modules
PN-107134
DIR 10000165561 (Version 01)
Publication 1492-IN104B-EN-E
Foot Notes:
To understand any issues concerning I/O module compatibility refer to the Installation Manuals for the specific I/O
modules involved.
Cable 1492-CONACAB020N8 has (2) connectors on one end for the RTP, so only (1) Cable is required - see the Wiring
Diagrams and Photos for details.
Three conversions are possible using these two cables - (8 Voltage) or (8 Current) or (4 Voltage & 4 Current) - see the
Wiring Diagrams for further details.
These catalog numbers are for a 2.0M cable length. A 5.0M cable is also available. Change the 3 numerals in the
middle of the catalog number from "020" to "050" (Example: 1492-CONACAB020N1 becomes 1492-CONACAB050N1).
Only 2 cables can be used at one time. Each cable attaches to 1 of the 2 connectors on the existing RTP module. Each
cable converts 4 of the 1771 channels to 4 of the 1756 channels. The other end of the cable attaches to 1 of the 2 new
1756 modules.
This conversion solution requires replacement of the exisiting (1) 1771-RTP1 interface module with (2) 1771-RT41
interface modules. Each 1771-RTP1 module has a cold junction compensation thermocouple attached to the interface
module.
1756
Analog I/O Module
1771
Analog I/O Module
1492
"A" and "B" Cables
1492
Cable Descripton
1771-NOC 1756- OF6CI (Qty 2) 1492- CONACAB020N1 (Qty 2) Current, Isolated
1771 -NR 1756- IR6I (Qty 2) 1492- CONACAB020N4 (Qty 2) RTD
1771-NIS 1756- IF6CIS (Qty 2) 1492- CONACAB020N2 (Qty 2)
1771- NOV 1756- OF6VI (Qty 2) 1492- CONACAB020N1 (Qty 2)
1492- CONACAB020N7 (Qty 2)
1492- CONACAB020N6 (Qty 2)
Voltage
Voltage
1771-NOC 1756- OF8 (Qty 1) 1492- CONACAB020N8 (Qty 1) Current, Non-Isolated
Current
Current
1771-NIV 1756- IF6I (Qty 2)
1492- CONACAB020N3 (Qty 1 or 2)
1492- CONACAB020N7 (Qty 1 or 2) Voltage
1771- NT1 1756- IT6I (Qty 2)
1771- NT2 1756- IT6I2 (Qty 2)
1771- NIV1 1756- IF6I (Qty 2)
1492- CONACAB020N5 (Qty 2) Thermocouple
Thermocouple