When you need a touch interface for an industrial control panel, the buying decision usually comes down to how well the HMI fits the controllers already in the cabinet. For PLC/HMI projects, the Delta DOP-107EG and the Siemens 6AV6641-0CA01-0AX1 answer that question from opposite ends of the price range. The Delta is a DOP-107EG HMI touch screen; the Siemens is a Siemens HMI touch panel. The real question is whether you spend at the top of the price spread for the Siemens name or keep more of your budget intact with the Delta.
Quick Verdict
If you want an HMI touch screen without spending at the top of the price range, the Delta DOP-107EG is the pick. If you need a Siemens touch panel with part-number clarity, the Siemens 6AV6641-0CA01-0AX1 is the one to buy.
Comparison Table
| HMI Touch Panel | Listed Price | Relative Price | Controller Platform | Country of Origin | Condition |
|---|---|---|---|---|---|
| Delta DOP-107EG | USD 190.40 | Automate | Taiwan | New | |
| Siemens 6AV6641-0CA01-0AX1 | USD 685.35 | Simatic | Germany | New |
Where Each Product Wins
- The Delta DOP-107EG wins on the cost side of the decision. It is a clearly named DOP-107EG touch screen that fits module-oriented control layouts, and it is the cheaper unit in this head-to-head. If the budget number matters more than the brand on the part, the Delta is the straightforward pick.
- The Siemens 6AV6641-0CA01-0AX1 wins on part-number clarity and platform fit. It carries a manufacturer part number and a GTIN/UPC and is positioned for a Siemens-based control environment.
Product Notes
Delta DOP-107EG
If you need a touch screen for a PLC/HMI panel and the listed price is your starting point, the Delta has the clear advantage at the low end of the spread. The DOP-107EG model is named directly, and the Automate controller platform identifies the control environment it is meant for. It is also classified as a PLC Processor Module, so it belongs inside a module-oriented control panel rather than serving as a standalone HMI with its own independent identity. The limitation follows from that same classification: if your specification calls for a dedicated Touch Panel type, the Delta's module status will be the detail that decides against it.
Siemens 6AV6641-0CA01-0AX1
If your control environment uses Siemens hardware and you want the purchase order to carry a Siemens part number, this panel is the one to buy. The item is a 1PCS Siemens HMI touch panel with model 6AV6641-0CA01-0AX1, and it comes with a manufacturer part number, a GTIN, and a UPC. The controller platform is Simatic, which is the detail that gives it a direct place in a Simatic-based setup. The limitation is the higher price: the Siemens is the more expensive panel in this comparison, and the extra cost goes toward part-number clarity and platform alignment rather than a larger screen or expanded features.
Final Choice by Use Case
Choose the Delta DOP-107EG if your budget is the first spec you look at and you need a DOP-107EG touch screen for a module-based PLC/HMI panel. Choose the Siemens 6AV6641-0CA01-0AX1 if the touch panel is going into a Siemens-oriented control environment and you want the interface to match that setup.
