Description
Abb Dstc456 Multiplexer Per Bus Ridondante
Introduction to ABB DSTC456 5751017-L/2 Communication Control Card
ABB DSTC456 5751017-L/2 is a Communication Interface Control Card in the ABB Advance Master/Symphony Plus distributed control system. It belongs to the DSTC45x series communication module family and serves as a communication bridge between the system master station, remote I/O stations, and field devices in the DCS architecture. It is the core communication component that enables data exchange between the internal and external devices of the distributed control system.
core positioning
Abb Dstc456 Multiplexer Per Bus Ridondante
The module itself does not directly collect on-site process signals or drive actuators, but exists as a “communication processor” – responsible for converting control data sent by the main controller (such as DSPC170 CPU) into a communication format that can be recognized by remote devices, and at the same time transmitting on-site data collected by remote I/O stations back to the main controller. It is a member of the DSTC45x communication module series, belonging to the same product line as DSTC452 (MFB bus modem), but DSTC456 focuses on higher-level communication control and protocol processing.
Basic Parameters
Material Number: 5751017-L/2
Model: DSTC456
Series: DSTC45x Communication Control Card Series
System: ABB Advance Master/Symphony Plus DCS
Communication interface: Supports asynchronous/synchronous serial communication, compatible with ABB fieldbus protocols such as MFB (Master Field Bus)
Working voltage: 24V DC
Communication speed: up to 115200 bps (configurable)
Electrical isolation: ≥ 1500V isolation between the controller side and the communication port side
Size: Approximately 178mm × 95mm × 96mm (DSTC45x series standard size)
Weight: Approximately 0.1kg
Working temperature: -20 ° C to+60 ° C
Storage temperature: -40 ° C to+85 ° C
Relative humidity: 5% to 95% (non condensing)
Protection level: IP20, suitable for installation inside control cabinets
Installation method: DIN rail installation/rack mounted installation
Main functional features
Multi protocol communication support: Supports ABB fieldbus protocols such as MFB (Master Field Bus), and can be used in conjunction with communication interface modules such as CI520/CI525/CI526 to achieve reliable data transmission between the master station and remote I/O stations. In the ABB DCS fieldbus network, DSTC456 is responsible for the dynamic processing of datasets, including the transmission of monitoring data, control data, and parameterized data.
Communication Control and Scheduling: Responsible for packaging, unpacking, and scheduling management of communication data, ensuring timely and accurate signal transmission between the controller and remote I/O stations, and meeting the real-time communication requirements of process control. The communication speed can be configured between 1200 bps and 115200 bps, suitable for communication scenarios with different distances and bandwidth requirements.
Electrical isolation: A ≥ 1500V electrical isolation is achieved between the controller side and the communication port side, effectively suppressing the impact of on-site electromagnetic interference on the control system and improving system safety and communication stability.
Status indicator: Equipped with operation indicator light, communication status indicator light, and fault indicator light, it can quickly determine the working status of the module and whether the communication link is normal on site, without the need for additional diagnostic tools.
Signal protection: Built in overvoltage protection, overcurrent protection, and interference suppression circuits can maintain stable communication in industrial environments with strong voltage fluctuations or electromagnetic interference, reducing the risk of communication interruption caused by external abnormalities.
Loop monitoring: supports the detection of communication interruptions, power outages, frame errors, and other anomalies. Fault information can be reported to the main controller through the system bus, making it easy to quickly locate communication faults.
Modular design: Supports combination with other DSTC series communication units, flexibly expands system communication capabilities, and adapts to distributed control requirements of different scales.
Hot plug support: Supports online hot plug replacement, maintenance can be completed without cutting off the system power, reducing the risk of downtime.
Start self check: Automatically check the electrical ID of the module when powered on, and do not enter the running state when it does not match the configuration, to prevent communication abnormalities caused by mismatches.
Comparison with products in the same series
DSTC452 is an MFB bus specific modem that focuses on physical layer signal conversion and is the underlying module of DSTC456. The core positioning of DSTC456 is the “communication control card”, which undertakes protocol processing and data scheduling functions on top of DSTC452, acting as the “brain” in the communication link. DSTC190 is an asynchronous communication connection unit, DSTC120 is a synchronous communication connection unit, and the communication focus of the three is different. DSTC456 is irreplaceable in scenarios that require high reliability data exchange with remote I/O stations through fieldbus, and is the upper control core of DSTC452 modem.
Typical application scenarios
Power industry: fieldbus communication between generator set auxiliary systems and remote I/O stations to achieve reliable data exchange between controllers, field transmitters, and actuators.
Chemical industry: MFB bus communication between DCS system and remote I/O station reduces wiring length from site to control room.
Metallurgical industry: Distributed communication deployment of remote I/O stations for equipment such as continuous casting machines and rolling mills.
Water treatment: remote monitoring communication link for pump station and dosing system.
Manufacturing: Remote I/O station control and data acquisition for production line equipment.
