Choosing a human-machine interface for a machine panel is more than a screen-size decision; it is a question of how well the panel fits the control architecture you already run. In the PLC-and-HMI space, two industrial touchscreens often end up on the same shortlist: the Allen Bradley PanelView Plus 7 Ser B Industrial HMI Touchscreen 2711P-T12W21D8S and the Siemens SIMATIC HMI KTP700 Touch Screen 6AV2123-2GB03-0AX0. One brings a color display and an Allen-Bradley nameplate; the other brings a lower price and an S7/300-oriented controller platform. Here is how they compare.
Quick verdict
Choose the Allen Bradley PanelView Plus 7 if you want a color touchscreen in the PanelView Plus family and are comfortable with a panel that shows visible scratches and scuffs. Choose the Siemens SIMATIC KTP700 if you want to keep more of your budget for the rest of the build, especially if your control platform is already S7/300. The Siemens listing is about 23% below the higher-priced Allen Bradley, so the price gap is meaningful for one panel or a small machine run.
Comparison table
| Product | Listed price | What stands out |
|---|---|---|
| Allen Bradley PanelView Plus 7 Ser B Industrial HMI Touchscreen 2711P-T12W21D8S | USD 799.99 | Color display; touch panel; used unit from 2018 with visible cosmetic wear |
| Siemens SIMATIC HMI KTP700 Touch Screen 6AV2123-2GB03-0AX0 | USD 614.00 | Siemens SIMATIC; S7/300 controller platform; AC-powered; German origin |
Where each product wins
The Allen Bradley wins if you want the panel with the color display and are willing to accept cosmetic wear in exchange. It is the stronger choice for an Allen-Bradley-centric shop where the PanelView Plus name already feels natural.
The Siemens wins on price and control platform fit. It is not just the less expensive listing; the S7/300 focus makes it a more direct match for a Siemens-based control design.
Product notes
Allen Bradley PanelView Plus 7 Ser B (2711P-T12W21D8S)
The PanelView Plus 7 Ser B is the option to pick if you value a color touchscreen with an Allen-Bradley nameplate. Its listing describes a used unit with visible scratches and scuffs on the surface and cosmetic wear on the bezel, so you are not getting a showroom-fresh panel. What you are getting is a 2018 touch panel in the PanelView Plus line at the higher end of this comparison. The color display is the standout feature, and the touchscreen operation is consistent with the HMI category. The limitation is the condition: cosmetic wear can be acceptable in a maintenance bay but harder to put in front of a customer. If your priority is a clean display, this used example takes that risk.
Siemens SIMATIC HMI KTP700 Touch Screen (6AV2123-2GB03-0AX0)
The Siemens KTP700 is the economical choice in this head-to-head, with its USD 614.00 list price sitting roughly 23% below the Allen Bradley. It also lists the S7/300 controller platform, so it is aimed at Siemens-centric control setups. The panel is described as AC-powered and comes from Germany, which may be useful when you are sourcing a panel for a Siemens cabinet. The limitation is the integration direction: if your existing PLCs are Allen-Bradley, the S7/300 focus is a mismatch and you will be planning around that rather than moving into a PanelView-style workflow. For a buyer building new on S7/300, however, the lower price and Siemens SIMATIC naming make it the practical starting point.
Final choice by use case
For a replacement panel in an existing Allen-Bradley system where a bit of cosmetic wear is acceptable, the Allen Bradley PanelView Plus 7 Ser B is the stronger fit. For a fresh control build that matches the Siemens platform, or a project where trimming the HMI spend matters as much as the display, the Siemens SIMATIC KTP700 is the better value. You get the Siemens SIMATIC touchscreen and leave more room in the budget for the rest of the machine.
