ABB 3BDH000020R1 AC500 series RS232 communication expansion module
This component is AC500 series RS232 communication expansion module of ABB AC500 PLC platform, produced according to IEC industrial standards and ABB global manufacturing specifications. It is a pluggable optional accessory installed into CPU dedicated expansion slot, adding independent RS232 serial channel for the controller to realize point-to-point data communication with upper computers, handheld programming equipment and peripheral instruments equipped with RS232 interface.
Description
1.Product Brief Introduction
This component is AC500 series RS232 communication expansion module of ABB AC500 PLC platform, produced according to IEC industrial standards and ABB global manufacturing specifications. It is a pluggable optional accessory installed into CPU dedicated expansion slot, adding independent RS232 serial channel for the controller to realize point-to-point data communication with upper computers, handheld programming equipment and peripheral instruments equipped with RS232 interface.
2.Model Definition Explanation
3BDH is fixed internal coding prefix for ABB AC500 series PLC expansion accessories.000020 is unique part serial number of this RS232 module in ABB internal product catalog.R1 represents the first upgraded hardware revision with improved internal circuit layout compared with original prototype.
3.Technical Specifications
The module receives operating power from CPU internal backplane bus with no extra external power required. RS232 interface conforms to standard EIA RS232 specification, supporting adjustable baud rate ranging from 300bps up to 115200bps. Working ambient temperature ranges from -25℃ to +60℃, storage temperature covers -40℃ to +85℃, protection grade is IP20 for cabinet inner installation. The whole module passes IEC61000 EMC anti-interference and industrial vibration certification.
4.Interface and Communication Configuration
Front panel is equipped with DB9 serial connector for RS232 cable connection with PC and local intelligent devices. Rear gold finger plug structure inserts into CPU reserved expansion slot and completes internal data interaction via CPU onboard bus. It supports standard asynchronous serial communication, without built-in RS485 or Ethernet port on module housing.
5.Core Functions
It expands exclusive RS232 communication port for AC500 main controller, enabling local online programming upload and download via connecting programming computer. It also achieves short-distance point-to-point data exchange between PLC and on-site testing instruments or small monitoring terminals, separating RS232 communication task from CPU native serial port to avoid resource occupation conflict.
6.Application Scenarios
It is commonly equipped inside control cabinets of packaging equipment, small water treatment facilities, laboratory automation devices and on-site equipment debugging projects, mainly used for local program debugging and short-distance point-to-point data transmission.
7.Operation and Maintenance Instructions
Cut off CPU total power before installation, insert the module vertically into CPU expansion slot until mechanical locking finishes. Connect standard RS232 cable to DB9 port following pin definition. Perform regular maintenance every six months, clear dust on connector and module surface with dry soft brush and prohibit liquid cleaning agents. Replace the whole module when continuous communication failure exists after excluding cable and peripheral equipment faults, unauthorized disassembly and internal circuit modification are forbidden.
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