Here’s a concise description of the ABB PM864AK01 (3BSE018161R1):

• Type: Processor Unit
• Series: ABB System 800xA
• Functionality: Controls automation processes with high reliability
• Memory: 32 MB RAM, 2 MB Flash PROM for firmware storage
• Communication: Ethernet (IEEE 802.3), RS-232C, Control Network protocol (MMS & IAC)
• Redundancy: Supports CPU redundancy for higher availability
• Power Supply: 24V DC (19.2-30V DC), built-in lithium backup battery
• Dimensions: 135 mm (Depth) × 186 mm (Height) × 119 mm (Width)
• Application: Industrial automation, process control, and system integration