Features:
- Honeywell 900C72R-0100-44 is the CPU-only C70R selection for a redundant HC900 controller.
- Two Ethernet ports support host and peer-controller network arrangements.
- Configurable serial channels preserve Modbus RTU communication through the lead processor.
The controller belongs in a redundant CPU rack with a second C70R, duplicated power supplies and the redundancy switch module.
Ethernet and serial paths are independent connection groups, allowing host-network traffic and local serial devices to be assigned separately.
The order-code distinction matters because this CPU-only variant does not include the configuration-software and documentation package assigned to another catalog selection.
The Honeywell 900C72R-0100-44 ControlEdge HC900 C70R Redundant Controller CPU may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell 900C72R-0100-44 ControlEdge HC900 C70R Redundant Controller CPU Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Paired-controller organization
- Processor pair: Two C70R CPUs occupy the redundant rack as parallel control paths.
- Power pair: Redundant power supplies keep the CPU paths from sharing a single supply point.
- Switch function: The redundancy switch module coordinates the relationship between the two processors.
- Lead role: External communications follow the CPU currently holding control ownership.
Host and peer communication
- Dual ports: Two Ethernet connections let network paths be separated at the controller.
- Host traffic: Modbus TCP sockets serve supervisory or other supported host connections.
- Peer traffic: Redundant controllers can communicate across the assigned peer network.
- Network choice: The installation can use a single shared network or dual network interfaces.
Lead-CPU serial continuity
- Electrical choice: Each channel is configured for the documented RS-232 or RS-485 mode.
- Protocol role: The serial connection operates as a Modbus RTU slave interface.
- Failover route: Serial communication is maintained through the processor that becomes the lead CPU.
- Device setup: Baud rate, framing and addressing must agree with the connected Modbus master.
What the CPU-only code identifies
- Included identity: The code selects the C70R redundant CPU assembly.
- Software boundary: Configuration software is not part of this CPU-only order selection.
- Document boundary: The bundled-document package belongs to a different catalog option.
- System boundary: The matching redundant rack, partner CPU, power supplies and RSM remain separate system elements.