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5" HMI PLC vs Siemens KTP700 Repair Kit: Build New or Fix Existing?

Need PLC and HMI automation gear? This head-to-head compares the integrated 5" HMI PLC at $95.99 with the Siemens KTP700 membrane keypad and touchpad repair kit at $181.39, so you can decide whether to build a new control panel or repair an existing HMI.

Last updated Aug 17, 2026

Choosing between PLC and HMI automation gear can feel messy when one product is a complete controller and the other is a repair part. If you need to get a machine running, the first question is simple: are you building a new control panel or fixing an existing HMI? The integrated 5" HMI PLC is an all-in-one programmable controller. The Siemens KTP700 membrane keypad + touchpad repair kit is a replacement kit for an HMI in service. The price gap between the $95.99 integrated unit and the $181.39 repair kit is $85.40, but that gap only makes sense once you understand what each product is meant to do.

Quick Verdict

Go with the integrated 5" HMI PLC when you want the controller and basic I/O together in one unit. Go with the Siemens KTP700 membrane keypad + touchpad repair kit when the machine already has a KTP700 HMI and the operator-side keypad or touchpad needs attention. The real fork is new-build vs repair, not just price.

Side-by-Side Look

ProductListed PricePrice BarConditionRole
5" Integrated HMI PLCUSD 95.99NewPLC processor module with 5" HMI touchscreen
Siemens KTP700 Repair KitUSD 181.39UsedReplacement HMI interface kit

Where Each Product Wins

Build new: 5" Integrated HMI PLC

PLC Controller Programmable Logic Controller 5" HMI Touch Screen For Industrial

For a new panel that needs logic and operator controls in a compact package, the 5" integrated HMI PLC is the direct choice. It works with GX Works2/Developer programs, and the HMI software is free with multi-language support. That combination lets you build around a single unit instead of matching separate HMI and controller modules.

Repair existing: Siemens KTP700 Repair Kit

For a machine that already has a KTP700 HMI running, this kit is the targeted repair. It refreshes the front-panel controls without buying a new controller. Because this is a repair kit rather than a complete HMI station, the existing hardware and logic stay in place. If those are healthy, this kit is a more direct fix than a full control-system replacement.

Product Notes

5" Integrated HMI PLC

For a new machine build, the integrated 5" HMI PLC is the one to start with. It pairs the 5-inch display with the PLC processor module in one unit, so you are not sourcing a separate HMI display and controller. With 9 inputs, 8 relay outputs, and two 100 kHz pulse axes, it covers compact positioning, packaging, and labeling chores. The limitation is the fixed I/O count: nine inputs and eight relay outputs are the entire capacity of this module, so a larger panel with more field wiring will need extra I/O. If the machine fits that I/O footprint, the all-in-one approach simplifies the build.

Siemens KTP700 Membrane Keypad + Touchpad Repair Kit

Siemens KTP700 Membrane Keypad + Touchpad 6AV2123-2GB03-0AX0 HMI Repair Kit

If your machine already has a KTP700 HMI and the operator-side keypad or touchpad is the weak point, the repair kit is the more sensible purchase. It supplies the membrane keypad and touchpad interface pieces rather than a full HMI station, so you can keep the existing hardware and logic. That makes it a maintenance part, not a substitute for a complete controller. The limitation is that this is a used repair kit: the replacement keypad and touchpad come with the condition of used components. If the rest of the HMI behind that surface is healthy, you get a focused fix. If the HMI's electronics are also failing, the kit alone will not bring the machine back.

Final Choice by Use Case

  • New panel for a compact automation task: Pick the integrated 5" HMI PLC. It gives you logic and the listed I/O in one package.
  • KTP700 HMI that needs keypad or touchpad attention: Pick the Siemens KTP700 membrane keypad + touchpad repair kit. It is the targeted fix for restoring the operator interface.
Products in this article
PLC Controller Programmable Logic Controller 5" HMI Touch ScreenUSD 95.99View on eBaySiemens KTP700 Membrane Keypad + Touchpad 6AV2123-2GB03-0AX0 HMI Repair KitUSD 181.39View on eBay
PLC Controller Programmable Logic Controller 5" HMI Touch ScreenUSD 95.99View on eBaySiemens KTP700 Membrane Keypad + Touchpad 6AV2123-2GB03-0AX0 HMI Repair KitUSD 181.39View on eBay

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