Power supply is 24 V DC. Program memory is 512 KB RAM with 1 MB Flash in standard C1 CPU documentation; some 4-serial configurations list expanded nonvolatile memory and RTC backup. Serial interfaces include RS232, dual RS485 and one RS422/RS485 port according to the 4S configuration. Alternative C1 builds list 16 digital inputs and 16 digital outputs, 512 KB RAM, 1 MB Flash, RS232, RS485 and CANbus. Operating temperature is -25°C to 60°C. DIN-rail or panel mounting is supported according to housing version. IP20 cabinet protection applies.

The module provides cyclic PLC execution, Modbus RTU master or slave communication, CANopen support on CAN-equipped versions, high-speed counter and PWM capability on compatible builds, real-time clock backup, LED diagnostics and flash data retention during power loss. IEC 61131-3 programming is supported on C1 engineering tools.

Packaging machines, labeling systems, printing equipment, conveyor control, water-treatment skids, OEM machinery requiring several serial devices, retrofits where a single CPU must manage HMI, drives, scales and remote I/O.

24 V DC operating supply, 512 KB RAM and 1 MB Flash in standard builds, four serial ports in the 4S version, -25°C to 60°C temperature range, IP20 cabinet operation, fast digital response suitable for machine-level control rather than high-axis servo motion.

Flame-retardant industrial plastic or metal CPU housing according to version, FR4 PCB with conformal coating, gold or tin-plated connectors, DIN-rail or panel mounting hardware, electronic components rated for extended industrial temperature.

Compact controller body with front status LEDs, serial communication connectors, power and I/O terminals, optional expansion side connectors, integrated processor and memory section, secured firmware and configuration storage.

The CPU reads configured inputs and field device data through onboard I/O or serial/CAN networks. The runtime executes the user program according to the scan cycle, updates timers, counters, communication registers and motion variables, then writes outputs and sends response frames to HMI, drives or SCADA. Supervisory communication uses Modbus, CANopen or custom serial protocols based on port configuration.

Install on 35 mm DIN rail or panel bracket inside an IP20 control cabinet. Supply isolated 24 V DC within the specified tolerance. Separate serial communication cables from power and motor wiring. Ground the cabinet and shield RS485/CAN cables with single-point shield grounding. Back up the application project before firmware or hardware changes.

Do not connect or remove field wiring under live power. Confirm each serial port protocol, baud rate, parity and node address before startup. Avoid prolonged operation above 60°C without cabinet cooling. Perform periodic program backups and verify LED fault indications during maintenance. Replace through Berghof-compatible spare channels using the exact C1CPU-4S-07 ordering data.