OMRON ITNC-EIS01-DRM Replacement for ITNC Series

Product Overview

OMRON ITNC-EIS01-DRM Replacement for ITNC Series: Seamless Transition & Legacy System Compatibility

When your existing OMRON ITNC Series open network controller reaches end-of-life or becomes difficult to source, the ITNC-EIS01-DRM provides a direct, validated replacement path that preserves your existing DeviceNet topology, Ethernet infrastructure, and field wiring without requiring a full system redesign. This unit functions as an Ethernet-to-DeviceNet gateway, bridging upper-level Ethernet networks — including OMRON’s FINS/UDP and FINS/TCP communication layers — with lower-level DeviceNet I/O slaves, drives, and sensors already installed in your control cabinet.

Industrial facilities running legacy OMRON CS1, CJ1, or CJ2 series PLCs with DeviceNet master units such as the CS1W-DRM21 or CJ1W-DRM21 frequently encounter integration challenges when the supervisory Ethernet layer needs to be modernized. The ITNC-EIS01-DRM resolves this by acting as a transparent protocol converter, allowing your existing DeviceNet slaves — including remote I/O terminals, inverter drives, and smart sensors — to remain fully operational while the upper network is upgraded or reconfigured.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration from a legacy open network controller to the ITNC-EIS01-DRM typically involves coordinating several adjacent components within the same control cabinet or rack. During the retrofit process, engineers commonly address the following system elements alongside the gateway replacement:

The CS1W-DRM21 DeviceNet Master Unit or CJ1W-DRM21 installed in the PLC backplane continues to serve as the DeviceNet master scanner; no re-parameterization of the master is required when the ITNC-EIS01-DRM is substituted as the Ethernet-side interface. If the backplane itself is being refreshed, the CS1W-BC083 or CJ1W-PA202 power supply module should be inspected for capacity adequacy, particularly when additional I/O expansion units are added during the same maintenance window.

On the DeviceNet field side, remote I/O terminals such as the DRT2-ID16 (16-point digital input slave) and DRT2-OD16 (16-point digital output slave) remain fully compatible without any node address or baud rate changes, provided the existing network operates at 125 kbps, 250 kbps, or 500 kbps. Inverter drives connected via DeviceNet — for example, OMRON 3G3MX2 series drives with the 3G3AX-MX2-DRT DeviceNet option card — continue to receive speed reference and run/stop commands through the same network object mappings.

For facilities that are simultaneously upgrading their HMI layer, the NB7W-TW01B or NS12-TS01B-V2 touch panels communicate with the host CJ2 or CS1 PLC via Ethernet/IP or serial, independent of the DeviceNet gateway, so HMI program migration can proceed in parallel without impacting the ITNC-EIS01-DRM commissioning schedule.

Where signal isolation is required between the 24 VDC DeviceNet power segment and sensitive analog I/O circuits in the same cabinet, inline signal isolators or the CJ1W-AD081-V1 analog input unit provide the necessary separation. Programming cable CS1W-CN226 or USB-Serial adapter CS1W-CIF31 is used for initial configuration and node commissioning via CX-Integrator without interrupting live DeviceNet traffic.

Retrofit Guidance FAQ

Q: Do I need to re-wire the DeviceNet trunk cable when installing the ITNC-EIS01-DRM?
A: No. The ITNC-EIS01-DRM uses the standard 5-pin DeviceNet connector (V+, CAN_H, Shield, CAN_L, V−). Existing trunk and drop wiring, termination resistors, and node addresses are retained without modification.

Q: Is the FINS communication address (IP address and unit number) preserved from the previous unit?
A: Yes. The IP address, FINS node number, and network number are configurable via the front rotary switches and web-based setup tool. You can assign the same FINS address as the outgoing unit, making the replacement transparent to the host PLC program.

Q: Will my existing CX-Programmer ladder logic require modification?
A: In most direct-replacement scenarios, no ladder changes are needed. The FINS message instructions (CMND, SEND, RECV) targeting the gateway’s FINS address continue to function identically. Only if the I/O allocation table or DeviceNet scan list was customized to a non-standard mapping would partial re-mapping be required.

Q: What is the physical installation space requirement?
A: The ITNC-EIS01-DRM mounts on a standard 35 mm DIN rail. Its compact form factor (approximately 90 mm W × 90 mm H × 60 mm D) fits within the same panel space as the outgoing unit in most OMRON-standard control cabinet layouts.

Q: How is the DeviceNet power supply handled?
A: DeviceNet bus power (24 VDC) is supplied externally via the DeviceNet connector, consistent with standard DeviceNet topology. The unit’s internal logic is also powered from the same 24 VDC supply, eliminating the need for a separate logic power feed.

Q: Can this unit operate as both a DeviceNet master and a FINS server simultaneously?
A: Yes. The ITNC-EIS01-DRM operates as a DeviceNet master (scanner) on the lower network while simultaneously acting as a FINS server on the Ethernet side, enabling the host PLC to read/write DeviceNet I/O data via standard FINS memory area access commands.

Warranty Assurance

Every ITNC-EIS01-DRM unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to dispatch, each unit undergoes functional verification including power-on self-test, Ethernet port link confirmation, and DeviceNet communication initialization check. Units are shipped in original or equivalent protective packaging with ESD precautions applied.

In the event of a confirmed defect within the warranty period, TOPNLMS provides replacement unit dispatch or repair coordination with a target response time of 1–2 business days. Customers are encouraged to retain the original packaging and document the fault symptom for expedited processing. Warranty coverage applies to manufacturing defects and component failures under normal operating conditions; it does not cover damage resulting from incorrect installation, overvoltage, or unauthorized modification.

Stock availability is maintained for this SKU to support urgent replacement requirements. Express shipping options are available from our Xiamen warehouse to minimize control system downtime. For volume procurement, OEM integration projects, or technical pre-sales consultation, contact our team directly.