Part of the Allen-Bradley ControlLogix family.
Overview
1756-EN bridges to EtherNet/IP, 1756-CN bridges to ControlNet — both support produced/consumed tags and remote I/O.
Within the Allen-Bradley ControlLogix line, ControlLogix Communication Modules part numbers carry the 1756-ENET, 1756-EWEB, 1756-PLS, 1756-PSCA, 1756-RIO, 1756-SYNCH, 1756-CN and 1756-EN prefixes. Palm Parts Solution catalogues 21 distinct ControlLogix Communication Modules part numbers, including 1756-CN2, 1756-CNB, 1756-PLS and 1756-RIO.
The catalogued part numbers are classified across 3 product types: EtherNet/IP Modules (13), DeviceNet / CANopen Modules (5) and Modular PLCs (3).
Ratings, physical format and revision level differ from one ControlLogix Communication Modules part number to the next; the individual product page carries the data recorded for that specific item.
ControlLogix Communication Modules parts
Allen-Bradley 1756-CN2
$937.00
Allen-Bradley 1756-CN2R
$2,543.00
Allen-Bradley 1756-CN2RXT
$1,686.00
Allen-Bradley 1756-CNB
$280.99
Allen-Bradley 1756-CNBR
$380.00
Allen-Bradley 1756-EN2F
$4,994.99
Allen-Bradley 1756-EN2T/D
$3,388.99
Allen-Bradley 1756-EN2TK
$4,286.99
Allen-Bradley 1756-EN2TP
$3,420.00
Allen-Bradley 1756-EN2TR/C
$2,546.99
Allen-Bradley 1756-EN2TRK
$2,586.99
Allen-Bradley 1756-EN2TRXT
$6,239.00
Specifications
| Attribute | Detail |
|---|---|
| Manufacturer | Allen-Bradley |
| Product family | ControlLogix |
| Series | ControlLogix Communication Modules |
| Part-number prefixes | 1756-ENET, 1756-EWEB, 1756-PLS, 1756-PSCA, 1756-RIO, 1756-SYNCH, 1756-CN, 1756-EN |
| Distinct part numbers catalogued | 21 |
| Product types represented | 3 |
| Condition | New, Refurbished, or Surplus (varies by listing) |
Part numbers by product type
- EtherNet/IP Modules — 13 part numbers catalogued (e.g. 1756-EN2F, 1756-ENBT, 1756-EN2TK, +10 more)
- DeviceNet / CANopen Modules — 5 part numbers catalogued (e.g. 1756-CN2, 1756-CNB, 1756-CN2R, +2 more)
- Modular PLCs — 3 part numbers catalogued (e.g. 1756-PLS, 1756-RIO, 1756-PSCA2)
How to read these part numbers
Every item in this series is listed under its full Allen-Bradley part number, so the 1756-ENET, 1756-EWEB and 1756-PLS reference on the nameplate is the reference to search. Where a part number exists in more than one hardware or firmware revision, the revision recorded for the item appears on its product page. Specifications not recorded in our catalogue for a given part number are confirmed with the sourcing team before quoting.
More from this series
Allen-Bradley 1756-EN2TXT
$5,498.00
Allen-Bradley 1756-EN3TR/B
$2,111.99
Allen-Bradley 1756-EN4TR
$2,630.99
Allen-Bradley 1756-EN4TRK
$4,302.00
Allen Bradley 1756-ENBT
$1,331.99
Allen-Bradley 1756-ENET/A
$1,296.00
Allen-Bradley 1756-EWEB
$1,436.00
Allen-Bradley 1756-PLS
$3,150.00
Allen-Bradley 1756-PSCA2
$809.00
Allen-Bradley 1756-RIO
$4,107.99
Compatible series
Product types in this series
Related knowledge
Frequently asked questions
What does the ControlLogix Communication Modules series include?
The ControlLogix Communication Modules series is part of the ControlLogix family from Allen-Bradley. It groups related catalog numbers that share form factor, I/O type and communication protocol — making it easy to find drop-in replacements.
Is ControlLogix Communication Modules compatible with newer Allen-Bradley hardware?
In most cases yes. ControlLogix Communication Modules units interoperate with current Allen-Bradley programming software and communication backbones. Contact us with your firmware revision and we will confirm before shipping.
Can I get ControlLogix Communication Modules parts refurbished with warranty?
Yes. We offer refurbished ControlLogix Communication Modules modules tested to OEM specs with a 1-year replacement warranty. New surplus stock is also available when supply permits.
Machine down? Get a fast quote on the parts you need.
New, surplus, and refurbished industrial automation options. Request a quote or speak directly with an automation specialist for emergency sourcing.