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The Schneider Electric 140NOE77111 is a Modicon Quantum Ethernet TCP/IP option module that gives a Quantum CPU a 10/100 Mb copper port plus an embedded FactoryCast web server. It is one of the most replaced parts in legacy Quantum installations, because plants that started on Modbus Plus or serial Modbus inevitably move SCADA traffic to Ethernet, and the NOE module is the bolt-on path to do that without changing the CPU. This page covers the verified specifications, the differences between the 140NOE77100, 77101, 77110, and 77111 variants, and the modules typically swapped together when the network upgrade is done.
140NOE77111 Technical Specifications
- Series: Modicon Quantum NOE Ethernet TCP/IP module
- Port: 1 x 10/100BASE-TX, RJ45, auto-negotiating
- Protocols: Modbus TCP/IP server and client, FTP server, HTTP server, SNMP agent, BOOTP/DHCP client, NTP client
- FactoryCast: embedded web server with user-defined web pages, SOAP/XML data services, customizable diagnostic dashboards
- Connections: up to 64 simultaneous Modbus TCP connections (verify against your firmware revision)
- Backplane: Modicon Quantum 140 XBP racks, occupies one slot
- Power draw: 5 VDC from the backplane bus, supplied by the 140CPS power supply
- Diagnostic LEDs: Ready, Run, Collision, Link, Active
- Approvals: UL, CSA, CE, ATEX (verify against the date code label)
Confirm the firmware version printed on the side of the unit. Newer firmware (Exec ROM 4.x and later) supports global data and time sync features that older 2.x firmware does not, and Unity Pro projects sometimes require the newer firmware for full FactoryCast configuration.
Same-Series Comparison: 140NOE Ethernet Family
| Model | Port | FactoryCast | Notes |
|---|---|---|---|
| 140NOE77100 | 10 Mb AUI / 10BASE-T | No | Earliest NOE, legacy installations only |
| 140NOE77101 | 10/100 Mb RJ45 | No | Standard Ethernet TCP/IP, no embedded web |
| 140NOE77110 | 10 Mb AUI / 10BASE-T | Yes | FactoryCast over 10 Mb, predecessor of 77111 |
| 140NOE77111 | 10/100 Mb RJ45 | Yes | The current standard, FactoryCast on Fast Ethernet |
The most common confusion is between the 140NOE77101 and the 140NOE77111. They look similar and are pin-compatible on the rack, but the 77101 has no FactoryCast web server. If a project depends on embedded web pages, SOAP services, or web-based diagnostics, the 77111 is the only option. For pure Modbus TCP I/O scanning without web access, the 77101 is sufficient and slightly cheaper.
Compatible Components and Common Pairings
An NOE77111 retrofit usually involves a few additional parts, and Rabwellplc stocks the matching modules:
- CPUs: 140CPU65150, 140CPU65160, 140CPU67160 — Unity-capable processors that take full advantage of FactoryCast
- Power supply: 140CPS11420 8 A 5 VDC supply, recommended once Ethernet adds load to the rack
- Backplanes: 140XBP00600, 140XBP01000, 140XBP01600 racks with at least one free slot
- Switches: ConneXium TCSESM industrial Ethernet switches for the plant-floor segment
- Software: Unity Pro (Control Expert) for configuration, FactoryCast Configurator for embedded web pages
Common Use Cases
- Adding Modbus TCP/IP connectivity to an existing Quantum CPU without replacing the controller
- Bridging legacy Modbus Plus or serial Modbus networks to modern SCADA over Ethernet
- Publishing tag data and diagnostics over FactoryCast for plant maintenance dashboards
- Direct spare-part replacement for a failed 140NOE77111 in a critical Quantum rack
Why Buy the 140NOE77111 from Rabwellplc
Rabwellplc inspects every Quantum NOE module, records the firmware revision and date code, and ships from US stock so a failed Ethernet module does not stall a SCADA upgrade. The catalog also covers the rest of the Quantum rack — CPUs, I/O, backplanes, and the matching Schneider Modicon Quantum range — which is useful when the same outage exposes other aging modules in the same cabinet.
Need a 140NOE77111 with a known firmware? Check live stock on the 140NOE77111 product page and tell us the Exec ROM version your project requires.
Frequently Asked Questions
What is the difference between the 140NOE77101 and the 140NOE77111?
Both deliver 10/100 Mb Modbus TCP, but only the 140NOE77111 includes the FactoryCast embedded web server, SOAP/XML services, and configurable web pages. If the project needs web-based dashboards or embedded HMI, choose the 77111.
Does the 140NOE77111 work with Unity Pro / EcoStruxure Control Expert?
Yes. The module is supported by Unity Pro and its successor Control Expert. Verify the Exec ROM firmware version against the project requirements; older firmware may need a field update for full FactoryCast support.
Can the 140NOE77111 act as a Modbus TCP master and slave at the same time?
Yes. The module operates as both server (slave) and client (master) for Modbus TCP, allowing the Quantum CPU to read remote I/O while still answering SCADA polls. Verify the connection limits in the firmware notes for your revision.
Is the 140NOE77111 compatible with Modicon M340 or M580?
No. The 140NOE form factor is specific to the Quantum 140 XBP backplane. M340 uses BMXNOE and BMXNOC modules, while M580 has Ethernet built into the CPU and uses BMENOC option modules.
How many Modbus TCP connections does the 140NOE77111 support?
Up to 64 simultaneous Modbus TCP connections, depending on firmware revision. For high-density polling environments, plan the connection budget across NOE modules early in the design.