Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 6AV6642-0DA01-1AX1 |
| Manufacturer | Siemens (SIMATIC HMI) |
| Product Type | Operator Panel (OP 177B PN/DP) |
| Display | 5.7″ STN, 256 colors, 320 × 240 px (QVGA), LED backlight ~50,000 h @ 25 °C |
| Operation | Resistive analog touch + membrane keypad, 32 function keys (26 with LEDs), alphanumeric + hex input |
| Processor | ARM, 200 MHz |
| User Memory | 2,048 KB Flash/RAM |
| Expandability | 1× MMC card slot (recipes, data logging, project backup) |
| Communication | MPI / PROFIBUS DP (12 Mbit/s), Ethernet 10/100 RJ45 (PROFINET IO device, EtherNet/IP, TCP/IP, Sm@rtServer) |
| Serial / Other | 1× RS232 (optional), 1× RS422, 1× RS485, 1× USB (mouse/keyboard/barcode, up to 1 GB) |
| Printer Interface | Yes (ESC/P2, PCL3/PCL6 via serial/USB) |
| Supply Voltage | 24 V DC (rated current 0.24 A, I²t 0.5 A²·s) |
| Protection | IP65 front / IP20 rear; NEMA 4x, NEMA 12 (installed) |
| Operating Temp. | 0 … +50 °C, vertical mount, ≤35° tilt without external ventilation |
| Dimensions (W×H×D) | Approx. 240 × 252 mm bezel; depth ~45 mm (see Siemens cutout dwg) |
| Weight | 0.97 kg |
| Configuration SW | WinCC Flexible 2005 / 2008 / 2008 SP1+ (TIA Portal not supported) |
| Certifications | CE, UL, cULus, GL, ABS, BV, DNV, LRS, FM Cl I Div 2 |
| Lifecycle | PM400 – Announced discontinued Oct 2012, last order Jan 2015 |
Main Features and Advantages
The Siemens 6AV6642-0DA01-1AX1 differentiates itself from the OP 170B it supersedes on three fronts—color, connectivity, and memory—without abandoning the tactile keyboard topology that many machine builders standardized on. The 5.7″ STN moves from the OP 170B’s 4-shade blue to 256 colors, which sounds modest until you realize what it does for alarm differentiation: red/yellow/green status lamps, gradient bar graphs for analog values (tank level, temperature, pressure), and grayscale machine-bitmap overlays all become legible where mono STN forced you into blinking-reverse-video hacks. The 32-function-key membrane (26 LED-backed) carries over from the OP 170B layout philosophy, so an OP 170B cutout and key-legend overlay migrate cleanly, but the 6AV6642-0DA01-1AX1 adds a resistive touch overlay on top, meaning screens can be designed dual-mode—key-only for the operator, tap-nav for the setup tech—within the same WinCC Flexible project. The alphanumeric + hexadecimal keypad built into the membrane means numeric entry, ASCII tag names, and hex drive-parameter editing can happen on-panel without a popup keypad consuming half the 320×240 canvas.
Processing and memory mark the biggest leap. The ARM 200 MHz chip and 2 MB Flash/RAM (vs. 768 KB on OP 170B) let the Siemens 6AV6642-0DA01-1AX1 hold 500 tags, 100 screens, 500 messages, and 100 recipes comfortably—roughly 2.5× the OP 170B ceiling—so a machine that grew from “one recipe, 20 screens” to “multi-SKU, trending, multi-language” over a decade doesn’t choke the panel. The MMC slot (not CF—Siemens switched from CF on the 170-gen to MMC on the 177-gen) extends recipe and archive storage; though note the slot became “combo” MMC/SD from E-Stand 016 onward when paired with WinCC Flexible 2008 SP1, so check your engineering software version if you plan SD-card usage.
Network flexibility is where the “PN/DP” suffix justifies its premium over the DP-only sibling. The 6AV6642-0DA01-1AX1 carries MPI/PROFIBUS DP on a 9-pin Sub-D (12 Mbit/s, DP slave) for classic S7-300/400 backplane integration, and simultaneously a 10/100 RJ45 that can be addressed as a PROFINET IO device, an EtherNet/IP adapter, or a plain TCP/IP node running Sm@rtServer for remote VNC-style access. Practically, this means a machine originally built Profibus-only can later have the panel’s RJ45 patched into the plant Ethernet for remote diagnostics without swapping the HMI—something the OP 170B could not offer. The RS422, RS485, and optional RS232 round out the serial complement for barcode scanners, weigh scales, and receipt printers, while the USB host (up to 1 GB peripheral) handles mouse, keyboard, or barcode reader for commissioning convenience.
Durability and certification match the OP 170B’s floor credibility: 50,000-hour backlight MTBF, IP65 front / NEMA 4x / NEMA 12 when properly mounted, IP20 rear, 0…+50 °C envelope, 24 V DC at 0.24 A (~5.8 W). At 0.97 kg the 6AV6642-0DA01-1AX1 is marginally heavier than the OP 170B (0.9 kg) thanks to the Ethernet PHY and touch laminate, but still light enough for polycarbonate door mounting. Marine approvals (GL, ABS, BV, DNV, LRS) and FM Class I Division 2 extend the panel into offshore and hazardous-area cabinets where the OP 170B also roamed.
One nuance worth calling out: the Siemens 6AV6642-0DA01-1AX1 is a WinCC Flexible device, not a TIA Portal device. It will not open in WinCC Comfort/Unified (TIA Portal). Projects are engineered in WinCC Flexible 2005, 2008, or 2008 SP1, and the panel’s MPI/PROFIBUS node address is set via the control panel at first boot before the initial download—same workflow as OP 170B, so migrating a fleet is a “Change Device → OP 177B PN/DP → reconcile tags → download” exercise, not a rewrite. For plants sitting on OP 170B NOS stock that is finally running out, the 6AV6642-0DA01-1AX1 is the least-disruptive step up: same cutout, same key count, color added, Ethernet added, double memory. The PN/DP variant specifically is the right choice if the cabinet already has a patch to the plant Ethernet ring or if the S7-300/400 is being complemented by an S7-1500 that prefers PROFINET.
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