2711P-T9W22D8S — 9-Inch Widescreen Touch HMI Terminal, Dual Ethernet, 24V DC

The 2711P-T9W22D8S is a 9-inch widescreen touch-only HMI terminal with two embedded Ethernet ports rather than the single port found on the base model in the same size and resolution class. Both ports support star, linear, or Device Level Ring (DLR) topology, giving this terminal a network role that the single-port variant can't fill. Display, touch interface, memory, and physical dimensions otherwise match the standard 9-inch widescreen terminal in the same family.

Specifications

Parameter	Value
Part Number	2711P-T9W22D8S
Display Size	9 inch (widescreen)
Resolution	800 x 480 (WVGA)
Input Method	Resistive touchscreen (touch only)
Power Input	18–30V DC
Communication	2 × Ethernet (10/100Base-T, Auto MDI/MDI-X), 2 × USB
Topology Support	Star, Linear, Device Level Ring (DLR)
RAM / Storage	512 MB / 512 MB internal
Mounting Orientation	Horizontal or vertical (screen rotation supported)

Why the Second Ethernet Port Matters

A single-port terminal works fine connected to a switch in a star topology, but it can't participate in a ring network or pass traffic through to a downstream device without external switch hardware at its location. The second port on the 2711P-T9W22D8S changes that: the terminal can sit directly in a DLR ring — cable in one port, cable out the other — contributing to network redundancy without needing a managed switch installed at the panel where the HMI lives.

This matters most in machine architectures with several distributed EtherNet/IP nodes — drives, I/O racks, and the HMI itself — daisy-chained along a single physical path rather than each requiring its own home-run cable back to a central switch. If a cable segment between two ring nodes fails, the ring supervisor reroutes traffic the other direction, and the HMI keeps communicating with the controller even though the specific failed segment needs repair.

FAQ

Q: Can this terminal act as a DLR ring supervisor itself?

No. The terminal participates as a ring node — a separate device such as the controller's EtherNet/IP module or a managed switch must serve as the ring supervisor managing the DLR topology.

Q: Is the dual-port version compatible with the same mounting hardware as the single-port model?

Yes. Both share the same physical dimensions and panel cutout — the port count difference doesn't affect mounting, clamps, or gasket compatibility.

Q: Does using only one of the two ports cause any issue?

No. The second port can be left unused in a simple star or linear topology without any functional downside — the dual ports simply provide topology flexibility, not a mandatory connection requirement.

Q: Can this terminal be ordered without the manufacturer's brand marking on the bezel?

Brandless variants exist in this terminal family for OEM machine builders who want to apply their own branding — verify the specific brandless catalog number suffix before ordering if this is required.

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