I/O Wiring Conversion Systems

Catalogs > Industrial Controls Catalog > Terminal Blocks and Wiring Systems > I/O Wiring Conversion Systems > PLC-5 1771 to ControlLogix 1756

PLC-5 1771 to ControlLogix 1756

Introduction Product Selection Specifications
Bulletin 1492 Conversion Mounting Assembly

The Bulletin 1492 Conversion Modules must be installed in a Bulletin 1492 Conversion Mounting Assembly (see Table 1 below). A complete System Installation Manual ships with the Bulletin 1492 Conversion Mounting Assembly.



Table 1: Quick Selection

Bulletin 1771 Chassis Bulletin 1756 Chassis Bulletin 1492 Conversion Mounting Assembly
Cat. No. Max Slots for I/O Chassis Width‡ 
in. (mm)
Cat. No. Max Slots for I/O Chassis Width
in. (mm)
Cat. No. Max Slots for Conversion Modules Chasis Width
in. (mm)
Without Power Supply With Power Supply
1771-A1B 4 9.01
(229)
12.61
(320)
1756-A4 3 10.35
(263)
1492-MUA1B-A4-A7 4 9.01
(229)
1756-A7 6 14.49
(368)
 
1771-A2B 8 14.01
(356)
17.61
(447)
1756-A7 6 14.49
(368)
1492-MUA2B-A7-A10 8 14.01
(356)
1756-A10 9 19.02
(483)
 
1771-A3B1 ⋆  12 19.01
(483)
1756-A10 9 19.02
(483)
1492-MUA3-A10-A13 12 19.01
(483)
1756-A13 12 23.15
(588)
 
1771-A4B 16 24.01
(610)
1756-A13 12 23.15
(588)
1492-MUA4-A13-A17 16 24.01
(610)
1756-A17 16 29.06
(738)
 
⋆ 1771-A3B is not listed as it is used for 19 inch wide instrumentation panels.
‡ Notice that the 1756 Chassis Width sometimes exceeds the 1771 Chassis Width, with or without the Power Supply. The Cover-Plate of the 1492 Conversion Mounting Assembly allows the 1756 Chassis to be Left justified, Right justified or Centered. A complete System Installation Manual ships with the 1492 Conversion Mounting Assembly.

Compatibility

Table 2: Bulletin 1771 to Bulletin 1756 Conversion Modules and Cables

Bulletin 1771
Analog I/O Module⋆ 
Bulletin 1756
Analog I/O Module⋆ 
Bulletin 1492
I/O Conversion Module
Bulletin 1492
Cable‡ 
1771-IFE (DC) 1756-IF16 (DC) 1492-CM1771-LA002 1492-CONACAB005D
1771-IFE (DV) 1756-IF16 (DV) 1492-CM1771-LA002 1492-CONACAB005C
1771-IFF (DC) 1756-IF16 (DC) 1492-CM1771-LA002 1492-CONACAB005D
1771-IFF (DV) 1756-IF16 (DV) 1492-CM1771-LA002 1492-CONACAB005C
 
⋆ To understand any issues concerning I/O module compatibility, refer to the Installation Manuals for the specific Bul. 1771 and Bul. 1756 I/O modules involved.
‡  The 3 numbers indicate the length of the 1492 Cable. Recommended cable lengths of 0.5M are shown. Additional cable lengths are as follows:
1.0M = 1492-CONACAB010C
1.0M = 1492-CONACAB010D

Product Selection - Digital and Analog I/O Modules

Table 2A - Digital Inputs

Step 1:      In Column 1, find the Cat. No. of the Bulletin 1771 Digital I/O module.

Step 2:      In column 2, find the Cat. No. of the compatible Bulletin 1756 Digital I/O module. In some cases more than one module exists.
    Review the matrix carefully and review the I/O module installation manuals to determine full compatibility.

Step 3:     In column 3, find the Cat. No. of the Bulletin 1492 Conversion Module.

Step 4:      In column 4, find the Cat. No. of the Bulletin 1492 Cable.



1 2 3 4
Bulletin 1771
Digital I/O Module ♦ 
Qty. Bulletin 1756
Digital I/O Module ♦ 
Qty. Bulletin 1492 Conversion Module Bulletin 1492 Cable ⋆ 
Cat. No. Order Qty. Cat. No. Order Qty.
1771-IA 2 1756-IA16 1 1492-CM1771-LD007 2 1492-C005005XE 1
1771-IA2 2 1756-IA16 1 1492-CM1771-LD007 2 1492-C005005XE 1
1771-IAD 1 1756-IA16 1 1492-CM1771-LD001 1 1492-CONCAB005X 1
1771-IAD 1 1756-IH16I 1 1492-CM1771-LD002 1 1492-CONCAB005Y 1
1771-IAN 1 1756-IA32 1 1492-CM1771-LD003 1 1492-CONCAB005Z 1
1771-IB 2 1756-IB16 1 1492-CM1771-LD007 2 1492-C005005XE 1
1771-IBD 1 1756-IB16 1 1492-CM1771-LD001 1 1492-CONCAB005X 1
1771-IBN 1 1756-IB32 1 1492-CM1771-LD003 1 1492-CONCAB005Z 1
1771-IC 2 1756-IC16 1 1492-CM1771-LD007 2 1492-C005005XE 1
1771-ICD 1 1756-IC16 1 1492-CM1771-LD001 1 1492-CONCAB005X 1
1771-ID 2 1756-IA16I 1 1492-CM1771-LD012 2 1492-C005005XL 1
1771-ID01 2 1756-IM16I 1 1492-CM1771-LD012 2 1492-C005005XL 1
1771-ID16 1 1756-IA16I 1 1492-CM1771-LD004 1 1492-CONCAB005Y 1
1771-ID16 1 1756-IH16I 1 1492-CM1771-LD004 1 1492-CONCAB005Y 1
1771-IG 2 1756-IG16 1 ♠  1492-CM1771-LA003 2 1492-C005005XS 1
1771-IGD 1 1756-IG16 1 1492-CM1771-LD006 1 1492-CONCAB005X 1
1771-IH 2 1756-IC16 1 1492-CM1771-LD007 2 1492-C005005XE 1
1771-IM 2 1756-IM16I 1 1492-CM1771-LD007 2 1492-C005005XH 1
1771-IMD 1 1756-IM16I 1 1492-CM1771-LD002 1 1492-CONCAB005Y 1
1771-IN 2 1756-IN16 1 1492-CM1771-LD007 2 1492-C005005XE 1
1771-IND 1 1756-IN16 1 1492-CM1771-LD001 1 1492-CONCAB005X 1
1771-IND1 1 1756-IN16 1 1492-CM1771-LD001 1 1492-CONCAB005X 1
1771-IQ 2 1756-IB16I 1 1492-CM1771-LD007 2 Sink 1492-C005005XK 1
1771-IQ 2 1756-IB16I 1 1492-CM1771-LD014 2 Source 1492-C005005XJ 1
1771-IQ16 1 1756-IB16I 1 1492-CM1771-LD004 1 1492-CONCAB005Y 1
1771-IT 2 1756-IB16 1 1492-CM1771-LD007 2 1492-C005005XE 1
1771-IV 2 1756-IV16 1 1492-CM1771-LD014 2 1492-C005005XG 1
1771-IVN 1 1756-IV32 1 1492-CM1771-LD005 1 1492-CONCAB005Z 1
  
⋆  The 005 in the Cat. No. indicates cable length of the Bulletin 1492 cable. The recommended length of 0.5 M is listed, additional lengths are listed below.
1.0M Cable = 1492-CONCAB010_
1.0M/1.0M Cable= 1492-C010010X_
0.5M/1.0M Cable = 1492-C005010X_
1.0M/0.5M Cable = 1492-C010005X_
♦  To understand any issues concerning I/O module compatibility refer to the conversion module wiring diagrams and the Installation Manuals for the specific I/O modules involved (with particular attention to the specification and wiring instructions).
♠  These 1771 Digital I/O Modules use a Swing Arm that only mounts to these Analog I/O Conversion Modules, which will therefore be used to provide for these 1771 Digital I/O conversions.

Table 2B - Digital Outputs

Step 1:    In Column 1, find the Cat. No. of the Bulletin 1771 Digital I/O module.

Step 2:     In column 2, find the Cat. No. of the compatible Bulletin 1756 Digital I/O module. In some cases more than one module exists.
    Review the matrix carefully and review the I/O module installation manuals to determine full compatibility.

Step 3:     In column 3, find the Cat. No. of the Bulletin 1492 Conversion Module.

Step 4:    In column 4, find the Cat. No. of the Bulletin 1492 Cable.



1 2 3 4
Bulletin 1771 Digital I/O Module ♦  Bulletin 1756 Digital I/O Module ♦  Bulletin 1492 Conversion Module Bulletin 1492 Cable ⋆ 
Cat. No. Qty. Cat. No. Qty. Cat. No. Order Qty. Cat. No. Order Qty.
1771-OA 1 1756-OA8E 1 1492-CM1771-LD014 1 1492-CONCAB005U 1
1771-OAD 1 1756-OA16 1 1492-CM1771-LD006 1 1492-CONCAB005X 1
1771-OAN 1 ♣  1756-OA16 2 1492-CM1771-LD013 1 1492-CONCAB005S3 1
1771-OB 2 1756-OB16D 1 1492-CM1771-LD014 2 1492-C005005XF 1
1771-OBD 1 1756-OB16E 1 1492-CM1771-LD006 1 1492-CONCAB005X 1
1771-OBD 1 ♣  1756-OC8 2 ∆  1492-CM1771-LD008F 1 1492-CONCAB005S1 1
1771-OBDS 1 1756-OB16E 1 1492-CM1771-LD006 1 1492-CONCAB005X 1
1771-OBN 1 1756-OB32 1 ∆  1492-CM1771-LD009F 1 1492-CONCAB005Z 1
1771-OC 1 1756-OC8 1 1492-CM1771-LD014 1 1492-CONCAB005V 1
1771-OD 2 1756-OA16I 1 1492-CM1771-LD012 2 1492-C005005XM 1
1771-OD16 1 1756-OA16I 1 ∆  1492-CM1771-LD010F 1 1492-CONCAB005Y 1
1771-ODD 1 1756-OA16I 1 ∆  1492-CM1771-LD010F 1 1492-CONCAB005Y 1
1771-ODZ 2 1756-OA16I 1 1492-CM1771-LD012 2 1492-C005005XP 1
1771-OG 2 1756-OG16 1 ♠  1492-CM1771-LA003 1 1492-C005005XS 1
1771-OGD 1 1756-OG16 1 1492-CM1771-LD006 1 1492-CONCAB005X 1
1771-OM 2 1756-OA16 1 1492-CM1771-LD014 2 1492-C005005XG 1
1771-OMD 1 1756-OA16 1 1492-CM1771-LD006 1 1492-CONCAB005X 1
1771-ON 1 1756-ON8 1 1492-CM1771-LD014 1 1492-CONCAB005W 1
1771-OND 1 ♣  1756-ON8 2 1492-CM1771-LD006 1 1492-CONCAB005S2 1
1771-OQ 2 1756-OB16I 1 ♠  1492-CM1771-LA004 1 1492-C005005XT 1
1771-OQ16 1 1756-OB16I 1 ∆  1492-CM1771-LD010F 1 1492-CONCAB005Y 1
1771-OR 2 1756-OA16I 1 1492-CM1771-LD012 2 1492-C005005XR 1
1771-OVN 1 ♣  1756-OV16E 2 1492-CM1771-LD013 1 1492-CONCAB005S3 1
1771-OW 1 1756-OX8I 1 1492-CM1771-LD012 1 1492-CONCAB005Y 1
1771-OW16 1 1756-OW16I 1 1492-CM1771-LD011 1 1492-CONCAB005Y 1
1771-OWNA 1 ♣  1756-OW16I 2 1492-CM1771-LD013 1 1492-CONCAB005S4 1
1771-OY 1 1756-OX8I 1 1492-CM1771-LD012 1 1492-CONCAB005Y 1
1771-OYL 1 1756-OX8I 1 1492-CM1771-LD012 1 1492-CONCAB005Y 1
1771-OZ 1 1756-OX8I 1 1492-CM1771-LD012 1 1492-CONCAB005Y 1
1771-OZL 1 1756-OX8I 1 1492-CM1771-LD012 1 1492-CONCAB005Y 1
  
⋆  The 005 in the Cat. No. indicates cable length of the Bulletin 1492 cable. The recommended length of 0.5 M is listed, additional lengths are listed below.
1.0M Cable = 1492-CONCAB010_
1.0M/1.0M Cable= 1492-C010010X_
0.5M/1.0M Cable = 1492-C005010X_
1.0M/0.5M Cable = 1492-C010005X_
♣  The two 1756 modules must be located directly next to each other in the 1756 chassis.
∆ The "F" at the end of the 1492 I/O Conversion Module Catalog Number indicates it is fused to match the functionality of the 1771 module being replaced.
♦  To understand any issues concerning I/O module compatibility refer to the conversion module wiring diagrams and the Installation Manuals for the specific I/O modules involved (with particular attention to the specification and wiring instructions).
♠ These 1771 Digital I/O Modules use a Swing Arm that only mounts to these Analog I/O Conversion Modules, which will therefore be used to provide for these 1771 Digital I/O conversions.

Table 3 - Analog Inputs and Outputs

Step 1: In Column 1, find the Cat. No. of the Bulletin 1771 Analog I/O module.

Step 2: In column 2, find the Cat. No. of the compatible Bulletin 1756 Analog I/O module. In some cases more than one module exists. Review the matrix carefully and review the I/O module installation manuals to determine full compatibility.

Step 3: In column 3, find the Cat. No. of the Bulletin 1492 Conversion Module.

Step 4: In column 4, find the Cat. No. of the Bulletin 1492 Cable.



1 2 3 4
Bulletin 1771
Analog I/O Module⋆ 
Bulletin 1756
Analog I/O Module⋆ 
Bulletin 1492
Conversion Module
Bulletin 1492
Cable ‡ 
Cat. No. Qty. Cat. No. Description Qty. Cat. No. Order Qty. Cat. No. Order Qty.
1771-IFE 1 1756-IF16 Diff Current 1 1492-CM1771-LA002 1 1492-CONACAB005D 1
Diff Voltage 1 1492-CM1771-LA002 1 1492-CONACAB005C 1
Sgl End Current 1 1492-CM1771-LA001 1 1492-CONACAB005B 1
Sgl End Voltage 1 1492-CM1771-LA001 1 1492-CONACAB005A 1
1771-IFF 1 1756-IF16 Diff Current 1 1492-CM1771-LA002 1 1492-CONACAB005D 1
Diff Voltage 1 1492-CM1771-LA002 1 1492-CONACAB005C 1
Sgl End Current 1 1492-CM1771-LA001 1 1492-CONACAB005B 1
Sgl End Voltage 1 1492-CM1771-LA001 1 1492-CONACAB005A 1
1771-IL
(8-ch)
1 1756-IF6I
(6-ch)
Current 1 1492-CM1771-LA004 1 1492-CONACAB005K 1
Voltage 1 1492-CM1771-LA004 1 1492-CONACAB005L 1
1756-IF6I
(2 x 4ch)
Current 2 1492-CM1771-LA004 1 1492-CONACAB005T1 1
Voltage 2 1492-CM1771-LA004 1 1492-CONACAB005T2 1
1771-IR 1 1756-IR6I 1 1492-CM1771-LA004 1 1492-CONACAB005F 1
1771-IXE 1 1756-IT6I2 1 1492-CM1771-LA005 1 1492-CONACAB005G 1
1771-IXHR 1 1756-IT6I2 1 1492-CM1771-LA005 1 1492-CONACAB005G 1
1771-OFE1 1 1756-OF6VI 1 1492-CM1771-LA003 1 1492-CONACAB005E 1
1771-OFE2 1 1756-OF6CI 1 1492-CM1771-LA003 1 1492-CONACAB005E 1
 
⋆ To understand any issues concerning I/O module compatibility refer to the conversion module wiring diagrams and the Installation Manuals for the specific I/O modules involved (with particular attention to the specification and wiring instructions).
‡ The 005 in the Cat. No. indicates cable length of the Bulletin 1492 cable. The recommended length of 0.5 M is listed, additional lengths are listed below.
1.0M Cable = Cat. No. 1492-CONCAB010_

Product Selection -High Resolution Isolated Analog I/O Modules

Bulletin 1771-N High Resolution Isolated Analog I/O Modules

The Bulletin 1771-N High Resolution Analog I/O modules were designed to be used with Bulletin 1771-RTPs (Remote Termination Panels) and connected by a 6ft or 15ft cable (Cat. No. 1771-NC6 or 1771-NC15). The conversion of the Bul. 1771-N Series I/O to a Bul. 1756 ControlLogix I/O can be accomplished without the removal of any field wires from the existing Bul. 1771-RTPs. Simply replace the (2) existing Bul. 1771 cables with (2) of the following Bul. 1492 cables in the tables below. Each of these new Bul. 1492 cables has a connector on one end that attaches directly to the existing Bul. 1771-RTP and a Bul. 1756 RTB (Removable Terminal Block) on the other end for connection to the Bul. 1756 ControlLogix I/O module.

Click to enlarge - 1771-N


Please Note: These conversions do not require the use of the conversion mounting assemblies or conversion modules.

Table 4 - Conversion Cables for Bulletin 1771-N Series I/O

Step 1: In Column 1, find the Cat. No. of the Bul.1771 Digital I/O module.

Step 2: In column 2, find the Cat. No. of the compatible Bul.1756 Digital I/O module. In some cases more than one module is required. Review the matrix carefully and review the I/O module installation manuals to determine full compatibility.

Step 3: In column 3, find the Cat. No(s). and descriptions of the Bul. 1492 Cables required.


1 2 3
Bulletin 1771
Analog I/O Module⋆ 
Bulletin 1756
Analog I/O Module⋆ 
Bulletin 1492
Cable ♣ ∆ 
Cat. No. Qty. Cat. No. Qty. Description Cat. No. Replaces Cables Order Qty.
1771-NOC 1 1756-OF6CI 2 Current, Isolated 1492-CONACAB020N1 A and B 2
‡  1771-NOC 1 1756-OF8 1 Current, Non-Isolated 1492-CONACAB020N8 A and B 1
1771-NIS 1 1756-IF6CIS 2 Current 1492-CONACAB020N2 A and B 2
§  1771-NIV 1 1756-IF6I 2 Current 1492-CONACAB020N3 A and B 2
1756-IF6I 2 Voltage 1492-CONACAB020N7 A and B 2
1756-IF6I 2 Current 1492-CONACAB020N3 A or B 1
Voltage 1492-CONACAB020N7 A or B 1
1771-NR 1 1756-IR6I 2 RTD 1492-CONACAB020N4 A and B 2
1771-NT1 1 1756-IT6I 2 Thermocouple 1492-CONACAB020N5 A and B 2
1771-NOV 1 1756-OF6VI 2 Voltage 1492-CONACAB020N1 A and B 2
1771-NIV1 1 1756-IF6I 2 Voltage 1492-CONACAB020N7 A and B 2
1771-NT2 1 1756-IT6I2 2 Thermocouple 1492-CONACAB020N6 A and B 2
  
⋆ To understand any issues concerning I/O module compatibility refer to the Installation Manuals for the specific I/O modules involved.
‡ Cat. No. 1492-CONACAB020N8 has (2) connectors on one end for the RTP, so only (1) Cable is required.
§ Three conversions are possible using these two cables - (8 Voltage) or (8 Current) or (4 Voltage & 4 Current)
♣ 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: Cat. No. 1492-CONACAB020N1 becomes Cat. No.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 Bul. 1771 channels to 4 of the 1756 channels. The other end of the cable attaches to 1 of the 2 new Bul. 1756 modules.

Table 5- Conversion Cables for Bulletin 1771-N Series I/O Combination Modules

1 2 3
Bulletin 1771
Analog I/O Module⋆ 
Bulletin 1756
Analog I/O Module⋆ 
Bulletin 1492
Cables♣ ∆ 
Cat. No. Qty. Cat. No. Qty. Description Cat. No. Replaces Cable Order Qty.
♦  1771-NIVR 1 1756-IR6I 1 RTD 1492-CONACAB020N4 B 1
1756-IF6I 1 Voltage 1492-CONACAB020N7 A 1
♦  1771-NIVR 1 1756-IR6I 1 RTD 1492-CONACAB020N4 B 1
1756-IF6I 1 Current 1492-CONACAB020N3 A 1
♠  1771-NIVT 1 1756-IT6I 1 Thermocouple 1492-CONACAB020N5 B 1
1756-IF6I 1 Voltage 1492-CONACAB020N7 A 1
♠  1771-NIVT 1 1756-IT6I 1 Thermocouple 1492-CONACAB020N5 B 1
1756-IF6I 1 Current 1492-CONACAB020N3 A 1
  
⋆ To understand any issues concerning I/O module compatibility refer to the Installation Manuals for the specific I/O modules involved.
♦ Two conversions are possible using these two cables - (4 Voltage & 4 RTD) or (4 Current & 4 RTD)
♠ Two conversions are possible using these two cables - (4 Voltage & 4 Thermocouple) or (4 Current & 4 Thermocouple)
♣ 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: Cat. No. 1492-CONACAB020N1 becomes Cat. No. 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 Bul. 1771 channels to 4 of the 1756 channels. The other end of the cable attaches to 1 of the 2 new Bul. 1756 modules.