Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | ABB BCU06-ETH C3 |
| Order Code | 1SAP140100R1170 |
| Manufacturer | ABB |
| Product Type | PLC CPU Module (AC500 Series) |
| Processor | 32-bit |
| User Program Memory | 256 KB |
| Ethernet Interface | 1 × RJ45, 10/100 Mbps, Modbus TCP |
| Serial Interfaces | 2 × RS232/RS485 (switchable), Modbus RTU / ASCII |
| Fieldbus Interface | FBP (FieldBus Plug) slave interface |
| Local Display | LCD screen with RUN / DIAG / CFG / VAL keys |
| Storage Expansion | SD card slot (MC502 card for backup/firmware) |
| Power Supply | 24 VDC (±10%) |
| I/O Expansion | Up to 10 local S500 I/O modules |
| Operating Temperature | +5°C to +55°C (some sources report 0°C to +60°C) |
| Protection Rating | IP20 |
| Mounting | DIN rail |
Main Features and Advantages
Integrated LCD for Field Diagnostics Without a Laptop
The ABB BCU06-ETH C3 addresses a practical pain point in industrial maintenance: the need to carry a programming terminal to every site visit. Its front-panel LCD and dedicated keys (CFG, DIAG, VAL) allow technicians to view runtime data, check error codes, and validate I/O status directly on the module. In installations where the controller is mounted inside a cabinet at a remote pump station or treatment facility, this saves significant time during troubleshooting and reduces dependence on specialized personnel with programming software installed .
Communication Flexibility Across Ethernet and Dual Serial Ports
The ABB 1SAP140100R1170 provides one Ethernet port for Modbus TCP connectivity to SCADA systems or HMIs, alongside two switchable RS232/RS485 ports for Modbus RTU, ASCII, or CS31 protocols. This combination supports architectures where the controller simultaneously talks to a supervisory system over Ethernet while managing variable frequency drives, soft starters, or field instruments through serial links. The FBP fieldbus plug interface further allows optional bus modules to be added for remote I/O expansion, giving the ABB BCU06-ETH C3 a level of communication adaptability unusual in its compact class .
SD Card Program Backup and Fast Replacement
Program and firmware backup on the ABB BCU06-ETH C3 is handled through an SD card slot that accepts ABB’s MC502 card. When a controller fails in the field, maintenance staff can insert the backup card into a replacement unit and restore the application without connecting a PC or downloading from a central server. This capability is particularly valuable in installations where network access to the controller is limited or where rapid recovery is prioritized over diagnostic investigation .
Scalable I/O Within a Compact Footprint
The ABB 1SAP140100R1170 supports up to ten local S500 I/O modules directly on the DIN rail, covering digital, analog, and special function requirements without the need for a separate rack. For applications that outgrow local expansion, the FBP interface enables remote I/O stations through fieldbus communication. This scalability allows the ABB BCU06-ETH C3 to serve as a single platform across multiple machine sizes or process skids, simplifying spare-parts inventory and engineering reuse .
