Siemens LAL1.25CB isn't a typical industrial PLC, but a flame safeguard burner controller for oil burners, managing ignition, flame detection (with detectors like QRB, QRC1, RAR9), and shutdown in boilers and furnaces for intermittent operation. While it automates combustion, its programming involves configuration for burner sequence, not general-purpose PLC logic, though it's sometimes called a "PLC programming controller" in listings due to its control function. 

In essence, if you're looking for a "PLC programming controller" for burners, the LAL1.25CB is a specialized burner control unit, not a general-purpose PLC, handling the critical safety logic for firing oil.