ABB – CM578-CN – CANopen Master Communication Module, AC500 PLC 1SAP170800R0001

The ABB CM‑CN (P/N SAPR) is a CANopen master communication module for the AC and S PLC families. It plugs into the CPU rack (using the five-pole COMBICON spring terminal) and enables robust CANopen networking at speeds up to  Mbit/s. Perfect for master–slave architectures in automation systems, it delivers modular, fieldbus-grade connectivity in a compact design.

Key Features:

• Model / Part No.: CM‑CN – SAP   R  

• Fieldbus Protocol: CANopen Master, supporting  kbit/s to  Mbit/s  

• Mounting: Front plug-in via ‑pole spring terminal on AC CPU rack  

• Power & Consumption: Powered from  V DC rack; draws ~ mA from power rail and ~ mA via CPU bus  

• Memory & Processor:  kByte internal RAM,  kByte external Flash firmware, EC -pin processor core  

• Physical Specs:  ×  ×  mm, ~ g; IP enclosure  

• Environmental Ratings:

  • Operating:  °C to  °C (horizontal) /  °C to  °C (vertical)

  • Storage: – °C to + °C; % RH non-condensing; – m altitude