What protocols does this HMI speak?
The 6AG1124-0JC01-4AX0: This HMI carries MPI, PROFINET with IRT and MRP as of WinCC V12, MODBUS TCP/IP, and support for S7-1200 and S7-1500 controllers — the full Siemens ecosystem plus open MODBUS for third-party PLCs. IRT and MRP are version-locked to WinCC V12 — confirm the engineering station version before committing to a line that depends on isochronous real-time or media redundancy. DCP, DHCP, LLDP, SNMP, and HTTP are all present for network discovery and management; HTTPS is not supported, so web access is unencrypted.
Where does this unit live in the panel?
Rated for -20 °C to 60 °C ambient — it handles unheated warehouses and cabinet interiors near warm drives without forced cooling. No buzzer, no Java VM, no ActiveX support — if the application relies on audible alerts or browser-based runtime, this isn't the variant.
