PROFIBUS toMODBUS/232/485/422bus bridge, inPROFIBUSOn one side isPROFIBUSFrom the station; The other side interface complies with the requirements based onRS232/485/422Serial portMODBUS/RTUagreement. Can do bothMODBUSThe master station can also serve as a slave station, selected by dialing. Bus bridge is not requiredPROFIBUSmain stationPLC/DCSProgramming only requires configuration in the main station (such asSTEP7）Configure the bus bridge in the middle.MODBUSThe configuration of the bus bridge includesPROFIBUSSlave station information and serial port information, especially to configure read and writeMODBUSStorage area message.
This product is designed for the field of industrial automationMODBUS/RTU/232/485/422Device accessPROFIBUSBus provides flexible and convenient solutions to meet the needs ofMODBUS/RTUEquipment (such as power measurement and protection instruments, frequency converters, servo systems, electronic scales, barcode readers, analytical instruments, sensors, smallPLCConnect to Siemens, etcABBControl system (e.g. Siemens)S7-300、-400PLCThe system,ABBof800FNetworking requirements for systems, etc.

● StandardsPROFIBUS-DPSlave interface, compliantIEC61158 TYPE3 PROFIBUSInternational standards, Chinese national standardsGB/T 20540-2006;

● Baud rate adaptive9600～12Mbps；

● Compatible with mainstreamPROFIBUSmaster device,in compliance withSiemens 300/400 PLC 、Beckhoff-dpMain stationABB 800FOmron Main Station, HollysysLK PLCHarmony TimeDCSWait;

The bus bridge isPROFIBUSOn one side is the slave station; existMODBUSCan be done on one sideMODBUSThe master station can also serve as a slave station, which can be selected by dialing and using different methodsGSDThe file is used for configuring the main station;

● StandardsMODBUShost/From the protocol interface, in compliance with Chinese national standardsGB/T19582-2008；

● Bus bridge constructionMODBUSAt the main station,Can connect multiple devicesMODBUSSlave station equipment,Its function is equivalent to transforming aMODBUSSubnet connection toPROFIBUSIn the gateway;

● Bus bridge constructionMODBUSThe configuration method for the main station is as follows:,so long asPROFIBUSIn the main station configuration (such asSTEP7、TwinCAT、S YCon）What needs to be sent to configure the gatewayMODBUSCommand message queue, andMODBUSFrom the station address and other information, the gateway can automatically generate and (timed, triggered) sendMODBUSCommand,

The bus bridge is a memory sharing gateway -PROFIBUSThe main station is based on the configured gatewayPROFIBUSData area（I / QDistrict) Read directly/writeMODBUSOne side station data. Simply configure through the main station without programming, it can be achievedMODBUSMessage configuration and providePROFIBUS I/QarriveMODBUSSite storage area（0、1、3、4Corresponding relationship of data in the region;

The bus bridge control word can be flexibly controlledMODBUSMessage transmission: timed transmission (between transmissions)partitionWaiting interval optional), event triggered sending. Can be strictly controlledMODBUSWrite it（05H、0FH、10H）Command sending, optional: write command enable/Prohibition, data change enable/Prohibited functions;

The bus bridge status word can comprehensively reflect the gatewayMODBUSCommunication status and serial communication status;

● ProvideRS232/485/42Optional rich interfaces and comprehensive terminal resistance matching function; The serial port baud rate can be selected through the main station configuration(2400~57.6K bps), check digit(N、O、E)Stop position.

Industry Applications

Power plant applications: Pingshuo Coal Gangue Power Plant, Qinling Power Plant

Energy applications: natural gas monitoring station, Langfang pipeline

Rail Transit: Beijing Subway, Shanghai Subway

Metallurgical application: Türkiye Steel Plant, Bayi Steel Plant

Cement building materials: Mengxi Cement

Product Case

Keywords:Power, SCADA monitoring system, PROFIBUS bus bridge
Project Name: A certain power automatic control system
Using the product: PB-B-MODBUS232/485
Connecting products: Siemens S7-400 PLC (main station), on-site relay protection device of Xuji, and DC screen
Implementation function: In the SCADA (Supervisory Control And Data Acquisition) monitoring system, Siemens S7-400 PLC and upper computer WINCC smoothly read temperature measurement values, set values, etc. from the instruments through Dingshi PB-B-MODBUS, and then remotely set the data in the relay protection device and DC screen equipment to achieve on-site control and operation.

Project Name: Application of a certain cigarette factory
Using the product: PB-B-MODBUS485
Connecting products: The main station is Siemens S7-300 PLC, and the MODBUS device connected on site is an air conditioning unit
Implementation function: PLC monitors important operational data of several air conditioning units (including evaporator pressure and temperature, condenser pressure and temperature, current, voltage, condensate water supply temperature, unit status alarm, and equipment start and stop) through Beijing Dingshi's PB-B-MODBUS bus bridge.
Effect analysis: The Beijing Dingshi PB-B-MODBUS bus bridge facilitates the integration of PLCs from various brands of air conditioning units into the PROFIBUS network, ensuring real-time and accurate information.

Project Name: A steel plant project in Türkiye
Using the product: PB-B-MODBUS485
Connecting products: The control system adopts Siemens DCS-PCS7 system, with redundant 414 CPU hardware and five ET200M substations. In the entire air separation system, in addition to the air separation body, there are three important individual devices, namely ATL AS COPC O air booster, Ingersoll Rand's raw material booster, and Shenyang Blower Works' circulating booster. The communication protocol is MODBUS-RTU port connected to PROFBUS PCS7 through PB-B-MODBUS485.
Effect analysis: Since its operation, the communication between the PLC and the air booster, raw material booster fan, and fan circulation booster has been normal, without any software or hardware failures or other interference phenomena, effectively ensuring the normal operation of the automatic control system and winning widespread praise from international peers.

Project Name: Baosteel Silicon Steel Sheet Production Line
Using the product: PB-B-MODBUS485
Connecting products: The main station uses Toshiba V3000s3pu55b PLC, the configuration software uses SyCon, the monitoring software uses TMEIC-V-TOOL SYS, and the on-site connection is Carrier chiller 30HXC190
Implementation function: Implemented the communication problem of the PROFIBUS bus system for the four silicon steel production lines.
Effect analysis: A key point in the implementation of this project's functionality is the setting of some parameters for accessing ModBus slave stations through the bus bridge in SyCon software. Through Dingshi products, there is no need to configure and download separately with software, which greatly reduces the time and energy of configuration personnel.

PB-B-MM Product Manual

PB-B-MS Product Manual

Application of PB-B-MODBUS in Siemens TIA software

CP342-5 connected to Beijing Dingshi PB-B-MODBUS

Connection between PB-B-MODBUS bus bridge and AC800M

PB-B-MODBUS routine

PB-B-MODBUS Debugging Software

PB-B-MODBUS GSD file
DSDP-MM GSD file
DSDP-MS GSD file

ABB 800F connects PB-B-MODBUS instance