Part of the Omron NX-Series Safety & I/O series — see the full model table, lifecycle status and replacement parts.
Omron NX-CSG320 — NX Safety Communication
SKU: NX-CSG320USD 1050.00
Omron NX-CSG320 NX-series Communication Control Unit for CIP Safety over EtherNet/IP, SIL 3, 3 ports, 72 x 100 x 90 mm, 390 g. China stock.
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Product Overview
The Omron NX-CSG320 is the Communication Control Unit for an NX-series safety stack. It is manufactured by Omron Corporation. Hengyixin Automation stocks this safety device in Xiamen and ships within 3-5 business days.
Omron's published data for this model: it is a Communication type module on the NX I/O Bus, rated Suitable for safety functions: TRUE with SIL 3 per IEC 61508. It carries 3 communication ports on EtherNet/IP. The enclosure is IP20 and measures 72 (W) x 100 (H) x 90 (D) mm, 390 g.
It is the EtherNet/IP head with CIP Safety routing and the NX I/O bus master. It is not a safety controller: an NX-SL5@@@ safety CPU Unit is required to run the safety logic, host the safety program and source the CIP-Safety connections. Compatible controllers and sibling SKUs are listed in the related products row below.
Omron's catalogue lists these spare parts for the NX-CSG320: the NX-TBC082 screwless push-in connector with 8 wiring terminals (marked A+B+FG), NX-AUX02 terminal block coding pins (pack of 10 units), and Cat.6A Ethernet patch cables from 20 cm to 20 m.
Key Features
- NX-series Communication Control Unit for a safety stack, on the NX I/O Bus
- Omron catalogue: Suitable for safety functions TRUE, SIL 3 per IEC 61508
- 3 communication ports on EtherNet/IP
- 72 (W) x 100 (H) x 90 (D) mm, 390 g, IP20
- Spare connector NX-TBC082, 8 screwless push-in terminals (A+B+FG); not included
- Requires an NX-SL5@@@ safety CPU Unit to run the safety logic -- the CSG320 is the communication head, not the safety controller
- SKU: NX-CSG320
- Series: Omron NX-series Communication Control Unit (NX-CSG)
Best-Fit Applications
- NX-SL5@@@ safety CPU uplink for an NJ / NX non-safety machine controller sharing the same EtherNet/IP network
- Spare unit on an existing safety stack where a CSG320 fault needs a like-for-like replacement (Ver. 1.01 firmware)
- Head of a CIP Safety on EtherNet/IP safety stack driving safety I/O on a packaging machine
Buying Checklist
- Pick the NX-CSG320 when the safety CPU is an NX-SL5@@@ and the network is CIP Safety on EtherNet/IP.
- Pick the NX-SL5700 as the matching safety CPU for a 2032-point / 254-connection build (the higher-density safety CPU).
- Pick the NX-SOD400 / NX-SOH200 for the safety output units that sit behind the CSG on the local NX backplane.
Technical Specifications
| Series | Omron NX-series Communication Control Unit (NX-CSG) |
|---|---|
| Model | NX-CSG320 |
| Type of Module | Communication |
| I/O System | NX I/O Bus |
| Safety Integrity | Suitable for safety functions: TRUE; SIL 3 per IEC 61508 |
| Communication Ports | 3, EtherNet/IP |
| Connection | NX-TBC082 screwless push-in connector with 8 wiring terminals (marked A+B+FG); NX-AUX02 terminal block coding pins |
| Dimensions / Weight | 72 (W) x 100 (H) x 90 (D) mm, 390 g |
| Protection | IP20 |
Manufacturer documentation
Omron's own product page, where the manufacturer's current specification and lifecycle information are published. We are an independent distributor and cannot mirror those documents; the link goes to Omron's site.
FAQ for NX-CSG320
What is the difference between NX-CSG320 and NX-SL5500?
Role. The NX-CSG320 is the COMMUNICATION CONTROL UNIT -- the EtherNet/IP head with CIP Safety routing and the NX I/O bus master. The NX-SL5500 is the SAFETY CPU UNIT, which runs the safety logic and hosts the safety program. A safety stack needs both.
Can the NX-CSG320 work without an NX-SL safety CPU?
No. The CSG320 is a COMMUNICATION CONTROL UNIT, not a safety controller. An NX-SL5@@@ safety CPU is required to run the safety logic, host the safety program and source the CIP-Safety connections.
What is the SIL rating of the NX-CSG320?
SIL 3 per IEC 61508. Omron's catalogue records Suitable for safety functions: TRUE and SIL according to IEC 61508: 3 for this model.
What connector does the NX-CSG320 use?
Omron lists NX-TBC082 as the replacement spare -- a screwless push-in connector with 8 wiring terminals, marked A+B+FG. NX-AUX02 terminal block coding pins (10 units) are listed alongside it. The connector is not included with the unit.
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