The Siemens 6AG1644-0AA01-4AX0 is a Siplus HMI panel from the ruggedized line, built to handle the wider temperature spread of -20 to 60 °C without forced cooling. It holds a battery-backed hardware clock that remains synchronized across power loss — critical when line-down root-cause analysis depends on exact alarm timestamps.
Communication backbone
Supports S5, MPI, PPI, PROFIBUS DP, PROFINET, TCP/IP. Sm@rtServer enables remote access over Ethernet.
Storage and logging
CF card slot for trend/profile logging; USB memory for data transfer. CSV export produces flat-file logs.
Sourcing reality
This HMI is not a standard-catalog part; availability is order-driven. Submit an RFQ. The HMI lacks ATEX approval, per spec.