This product is AC500 series Ethernet communication expansion module for ABB AC500 PLC system, manufactured in accordance with IEC industrial standards and ABB global production specifications. It is a plug-in optional component that can be installed on the dedicated expansion slot of AC500 CPU, adding independent Ethernet communication function to the controller to realize high-speed network data interaction with upper monitoring system and other networked automation equipment.

3BDH is fixed internal coding prefix for ABB AC500 series PLC expansion accessory products.000012 is the exclusive material serial number of this Ethernet communication module in ABB internal product catalog.R1 refers to the first optimized hardware revision version of the module’s internal circuit design.

The module draws working power from CPU internal backplane bus without separate external power input. The Ethernet interface complies with standard IEEE802.3 specification of 10/100Mbps auto-adaptive rate. Working ambient temperature ranges from -25℃ to +60℃, storage temperature ranges from -40℃ to +85℃, protection grade is IP20 for cabinet inner installation. The whole module passes IEC61000 EMC anti-interference and industrial vibration certification.

Front panel is equipped with standard RJ45 Ethernet port for network cable connection with switches, upper computer and field network devices. Rear gold finger structure plugs into CPU reserved expansion slot to finish internal data transmission via CPU built-in bus. The module supports TCP/IP communication protocol, and can realize data transmission based on Modbus TCP, no built-in RS485 terminal on module body.

It expands independent high-speed Ethernet communication channel for AC500 CPU, realizing real-time data uploading of field operating parameters and fault information to upper SCADA monitoring system through industrial Ethernet. It also supports inter-PLC networking communication and remote program downloading and debugging, reducing wiring workload and improving transmission speed compared with traditional serial bus communication.

It is widely equipped in PLC control cabinets of water treatment projects, packaging automation lines, metallurgical auxiliary control, building intelligent monitoring and centralized pump-fan control, applied for industrial network layout and remote data interaction between on-site control unit and central control room.

Cut off CPU total power supply before installation, insert the module vertically into CPU expansion slot until fully locked mechanically. Connect standard Ethernet cable into RJ45 port according to network construction specification, finish IP address parameter configuration in PLC programming software. Implement routine maintenance every six months, wipe dust on port and module shell with dry soft brush and avoid liquid cleaning solvent. Replace the entire module if persistent network connection failure occurs after excluding cable and network equipment faults, unauthorized disassembly and internal circuit alteration are forbidden.