Application Scenarios
A small injection-molding OEM in Zhejiang still ships 180 t machines with S7-200 (CPU 224XP) + 6AV6642-0AA11-0AX1 as the standard HMI bundle — a pairing that hasn’t changed since 2009. The reason isn’t laziness; it’s economics. The 5.7″ blue-STN is enough for mold-number selection, 8-zone barrel temp display, and fault codes, and the MPI port talks to the S7-200 at 187.5 kbps with nothing but a 9-pin Sub-D cable — no DP head, no switch, no PN coupler. When a molder’s maintenance guy cracked the 6AV6642-0AA11-0AX1 overlay after a wrench slip, the OEM shipped a tested refurb the same day. The customer swapped it in, downloaded the WinCC flexible project via PC Adapter USB (6ES7 972-0CB20) on Channel 2 MPI@1.5 Mbps, and the line was back for the night shift — no TIA re-licensing, no cabinet rework, no electrician. For a machine that invoices €8 k/month, the 45-minute HMI swap beats a €3 k KTP600 + TIA migration quote every time.
Parameters
| Main Parameters | Value / Description |
|---|---|
| Product Model | 6AV6642-0AA11-0AX1 |
| Manufacturer | Siemens (SIMATIC HMI, TP177A Micro Panel) |
| Product Category | Touch Panel – Resistive analog touch, no physical F-keys |
| Display | 5.7″ STN, blue mode (4 blue levels, mono), CCFL backlight |
| Resolution | 320 × 240 pixels |
| Processor | ARM architecture |
| User Memory | 512 KB Flash / RAM |
| Interfaces | 1 × RS422, 1 × RS485 (MPI up to 187.5 kbps, PROFIBUS DP up to 1.5 Mbps); no Ethernet, no USB, no SD/CF |
| Supply Voltage | 24 V DC, rated 0.24 A, typ. 6 W active |
| Protection | IP65 front / IP20 rear; NEMA 4X (when installed) |
| Housing Dimensions (W × H) | 212 × 156 mm front; cut-out 198 × 142 mm; install depth 44 mm |
| Backlight MTBF | 50,000 h @ 25 °C (CCFL) |
| Operating System | Linux-based HMI runtime |
| Configuration Tool | WinCC flexible 2004 Compact HSP or later (Micro license onboard); TIA Portal does not open native |
| Certifications | CE, GL, ABS, BV, DNV, LRS, NK, FM Cl.I Div.2, UL/CSA/cULus, ATEX Zone 2 / Zone 22, C-TICK |
| Weight | ~1.0 kg |
| Lifecycle | PM410 Discontinued – Siemens states “cancelled without replacement” |
Technical Principles and Innovative Values
- Innovation Point 1 – Pure MPI/DP on a 5.7″ budget panel. The 6AV6642-0AA11-0AX1 gives you a 9-pin Sub-D that does both MPI (to S7-200 / S7-300) and PROFIBUS DP slave (to S7-300/400 masters) on the same RS485 PHY — up to 1.5 Mbps on DP. For small machines where a €200 DP head + cable already hurts the BOM, the 6AV6642-0AA11-0AX1 collapses HMI + bus interface into one SKU.
- Innovation Point 2 – ARM + Linux instead of WinCE. While most 2005-era Siemens HMIs (MP/OP370, TP170, etc.) went Windows CE, the TP177A sub-family runs Linux — fewer crash vectors, no CE license fee passed to the OEM, and the 512 KB memory envelope is perfectly matched to the lightweight runtime. The 6AV6642-0AA11-0AX1 boots fast and stays up.
- Innovation Point 3 – On-screen keyboards cover decimal / binary / hex. No physical function keys on the 6AV6642-0AA11-0AX1 (pure touch), but the firmware supplies numeric, alphanumeric, and hex on-screen keyboards natively — handy when the S7-200 programmer expects HEX input for timer presets or diagnostic V-memory peeking.
- Innovation Point 4 – 44 mm install depth on a 212 mm wide fascia. The 6AV6642-0AA11-0AX1 tucks behind a 198 × 142 cut-out with only 44 mm behind the flange — fits door-pocket enclosures on compact injection, textile, and packaging machines where a Comfort panel’s 60+ mm depth would foul the inner stiffener.
- Innovation Point 5 – Marine + EX + NEMA 4X in a sub-€k entry panel. The 6AV6642-0AA11-0AX1 carries GL/ABS/BV/DNV/LRS/NK marine approvals and ATEX Zone 2 / Zone 22 / FM Cl.I Div.2 — certifications usually reserved for panels 3× the price. For a small chemical-dosing skid or shipboard auxiliary, that’s the differentiator.
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