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Industrial Automation
CS1W-EIP21 / EIP21S
CS-series EtherNet/IP Unit
EtherNet/IP unit with tag data link capacity of 180,000 words or more
Related Contents
Application Solutions
last update: April 1, 2025
International Standards
• The standards are abbreviated as follows: U: UL, U1: UL (Class I Division 2 Products for Hazardous Locations), C: CSA,
UC: cULus, UC1: cULus (Class I Division 2 Products for Hazardous Locations), CU: cUL, N: NK, L: Lloyd, and CE: EC
Directives.
• Contact your OMRON representative for further details and applicable conditions for these standards.
• Ask your OMRON representative for the most recent applicable standards for each model.
UC: cULus, UC1: cULus (Class I Division 2 Products for Hazardous Locations), CU: cUL, N: NK, L: Lloyd, and CE: EC
Directives.
• Contact your OMRON representative for further details and applicable conditions for these standards.
• Ask your OMRON representative for the most recent applicable standards for each model.
EtherNet/IP Unit
| Unit
type |
Product
name |
Specifications | No. of
unit numbers allocated |
Current
consump- tion (A) |
Model | Stand-
ards |
|||
|---|---|---|---|---|---|---|---|---|---|
| Communica-
tions cable |
Communica-
tions functions |
Units
per CPU Unit |
5 V
sys- tem |
24 V
sys- tem |
|||||
| CS1
CPU Bus Unit |
EtherNet/IP
Unit  |
Shielded twisted-
pair (STP) cable Categories: 100 Ω at 5, 5e |
Tag Data Link Functions,
Message Communications Functions, Socket Service Functions |
8
max. |
1 | 0.62 | --- | CS1W-EIP21S | UC1,
N, L, CE |
| Tag Data Link Functions,
Message Communications Functions |
0.41 | --- | CS1W-EIP21 *1 | ||||||
*1. Product no longer available to order.
Industrial Switching Hubs
| Product
name |
Appearance | Functions | No. of
ports |
Accessories | Current
consumption (A) |
Model |
|---|---|---|---|---|---|---|
| Industrial
Switching Hubs |
 |
Quality of Service (QoS):
EtherNet/IP control data priority 10/100BASE-TX, Auto-Negotiation |
5 | Power supply
connector |
0.07 | W4S1-05D |
Recommended Network Devices
The following table shows the devices recommended for use with the EtherNet/IP.
| Part | Manufacturer | Model number | Inquires |
|---|---|---|---|
| Switching Hub | Phoenix Contact | FL SWITCH SFN 8TX (8 ports) | Phoenix Contact USA Customer Service |
| Contec USA, Inc. | SH8008(FIT)H (8 ports) | CONTEC USA Inc. | |
| Cisco Systems, Inc. | WS-C2955T-12 (12 ports) | Cisco Systems, Inc. Main Corporate HQ | |
| Twisted-pair
cable |
100BASE-TX | ||
| EtherNet/IP compliant cable | - | ||
| Connectors
(Modular plug) |
STP Plug | ||
| Panduit Corporation | MPS588 | Panduit Corporation US Headquarters | |
| Boots | Tsuko Company | MK boot (IV) LB | Tsuko Company Japan Headquarters |
Note: 1. Always use a switching hub when using tag data links in the network.
Note: 2. If a repeater hub is used for EtherNet/IP tag data links (cyclic communications), the network's communications load
will increase, data collisions will occur frequently, and stable communications will be impossible.
last update: April 1, 2025
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