What it is and what it does
The Siemens 6AG1123-2GB03-2AX0 is a SIPLUS HMI operator panel with a keypad, status LEDs, and a buzzer. It communicates over PROFINET and MODBUS TCP/IP, supporting DCP, DHCP, LLDP, and SNMP for network integration. The plastic enclosure is rated IP20 on the rear. Operating range spans -20 to 60 °C, making it a fit for cold-chain, freezers, or high-ambient production zones.
Where it goes in the system
This panel sits on the front of a control cabinet, wired to the PLC backbone via PROFINET. It can directly talk to S7-1200, S7-1500, SIMOTION, LOGO!, or WinAC controllers. The MODBUS TCP support means it also fits into mixed-vendor lines without a protocol converter. No USB, no CAN, no PROFIBUS – communications are Ethernet-only, so plan for that single-drop or daisy-chain topology.
Key ratings that matter for commissioning
The -20 °C low end is the reason you spec this over a standard HMI – it works in a freezer or cold warehouse startup. The 60 °C high end covers baking ovens and hot production lines. The IP20 rear means you mount it in a clean, dry panel; no gasketing for wet washdown. With onboard buttons and switches, you can navigate screens and input values without a touchscreen – good for gloved hands in cold rooms.
Sourcing and lifecycle note
The SIPLUS range is built for extended-temperature and harsh environments – this is not a standard catalogue part that sits on shelves. Availability is order-driven; the correct posture is to submit an RFQ against your BOM line. No production-status change is recorded for this code, so it remains a current offering through the Siemens SIPLUS channel until a PCN says otherwise.