PROFIBUS to MODBUS/422 bus bridge

NegotiableUpdate on 04/12

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

PROFIBUS to MODBUS/232/485/422 bus bridge, with PROFIBUS slave station on the PROFIBUS side; The other side interface complies with the MODBUS/RTU protocol based on RS232/485/422 serial ports. It can be used as both a MODBUS master station and a slave station, selected by dialing. The bus bridge does not require programming of PROFIBUS master station PLC/DCS, it only needs to be configured in the master station configuration (such as STEP7). The configuration of MODBUS bus bridge includes PROFIBUS slave information and serial port information, especially the configuration of reading and writing MODBUS storage area messages.

Product Details

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.

Standard PROFIBUS-DP slave interface, compliant with IEC61158 TYPE3 PROFIBUS international standard. Baud rate adaptive 9600-12Mbps;
● Compatible with mainstream PROFIBUS master station equipment, such as Siemens 300/400 PLC, Beckhoff Dp master station ABB 800F、 Omron main station, Hollysys LK PLC, Hollysys DCS, etc;
The bus bridge on the PROFIBUS side is a slave station; On the MODBUS side, it can be used as a MODBUS master station or a slave station; Provide corresponding GSD files for network integration;
When the bus bridge is used as a MODBUS master station, it can connect multiple MODBUS slave station devices, which is equivalent to connecting a MODBUS subnet to a PROFIBUS network;
When configuring a bus bridge as a MODBUS master station, the configuration method is to simply configure the MDBUS command message queue and MODBUS slave station address information that the gateway needs to send in the PROFIBUS master station configuration (such as STEP7, TwinCAT, SYCon). The gateway can automatically form and (timed, triggered) send MODBUS commands, and receive and parse slave station response commands and data;
The bus bridge is a memory sharing gateway - the PROFIBUS master station directly reads/writes MODBUS side stations based on the configured gateway PROFIBUS data area (I/Q area)
Data. MODBUS message configuration can be achieved through the main station configuration without programming, and the corresponding relationship between PROFIBUS I/Q and MODBUS site data can be provided;
The bus bridge control word can flexibly control the sending of MODBUS messages: timed sending (sending interval, waiting interval optional), event triggered sending. Can be strictly controlled
MODBUS write (05H, 0FH, 10H) command sending, optional: write command enable/disable, data change enable/disable, etc
The bus bridge status word can comprehensively reflect the MODBUS communication status of the gateway and the communication status of the serial port.
● Provide a wide range of RS232, RS485, and RS422 interface options, as well as comprehensive terminal resistance matching functionality; The serial port baud rate can be selected through the main station configuration
(2400~57.6Kbps), checksum (N, O, E), stop bit.

		PB-B-MODBUS422
PROFIBUS parameters	standard	conform toIEC61158 TYPE3 PROFIBUSInternational standards, Chinese national standardsGB/T 20540-2006.
	speed	Standard PROFIBUS-DP driver interface, baud rate adaptive, maximum baud rate of 12Mbps
	Data volume	PROFIBUS input/output quantity can be freely set, maximum input/output: <1> Input Bytes + Output Bytes ≤ 232 Bytes； <2> Max Input Bytes ≤224 Bytes； <3> Max Output Bytes ≤224 Bytes；
Serial port parameters	physical interface	RS422 interface (4-wire)
	interface protocol	standardMODBUShost/From the protocol interface, in compliance with Chinese national standardsGB/T19582-2008
	character format	Data bit: 8;
		Parity: odd, even, none
		Stop position: 1, 2 (configurable)
	Working mode	MODBUSMaster/Slave (set through the hardware back dial switch) and use the corresponding GSD file
	Baud rate	2400bps, 4800bps, 9600bps, 19.2Kbps, 38.4Kbps, 57.6Kbps are optional. If a higher baud rate is required, please communicate and explain before purchasing
	Data volume	Send/receive 231 bytes
Operational characteristics	characteristic	controllableMODBUSThe sending or not of data commands for writing (05H, 06H, 0FH, 10H) can be controlled, that is, only read commands (01H, 02H, 03H, 04H) can be sent, or both read and write commands can be sent
	characteristic	<1> Memory sharing gateway - different from transparent transmission. PROFIBUSThe main station reads/writes MODBUS side station data directly based on the configured gateway PROFIBUS data area (I/Q area). <2> MODBUS can be achieved by configuring through the main station without programmingConfigure the message and provide the corresponding relationship between PROFIBUS I/Q and MODBUS station data. <3> Gateway control words can flexibly control MODBUSMessage sending: timed sending (sending interval, waiting interval optional), event triggered sending. <4> Strictly control MODBUSWrite (05H, 06H, 0FH, 10H) command to send, optional: write command enable/disable, data change enable/disable, and other functions. <5> Support Function Code: 01H、 02H, 03H, 04H, 05H, 06H, 0FH, 10H. <6> Gateway status words can comprehensively reflect network MODBUSCommunication status and serial communication status.
	collocation method	The configuration method for this gateway as a MODBUS master station is to simply configure the MODBUS command message queue and MODBUS slave station address information that this gateway needs to send in the PROFIBUS master station configuration (such as STEP7, TwinCAT, SYCon), and the gateway will automatically form and (timed, triggered) send MODBUS commands, and receive and parse slave station response commands and data
Electrical parameters	power consumption	Power supply: 24VDC (± 20%), current: 110mA (at 24VDC)
	authentication	CE certification, PROFIBUS certification
	work environment	Working temperature: -20 ℃ to+55 ℃; Transportation and storage: -40 ℃ to+70 ℃; Relative humidity at work: 5~95% (no condensation)
	install	Method: 35mm guide rail; Protection level: IP20；
	Dimension	Dimensions: Width (70mm) x Length (112.5mm) x Thickness (39.5mm); Weight: Approximately 230g
Product Features	Application scenarios	Solution for MODBUS devices to connect to PROFIBUS network
	Easy to use	Specially suitable for system integration engineer applications, relying on bus bridgesGSDFile and main station configuration software (such asSTEP7）No needPLC/DCSBy programming, it can be achievedMODBUSEquipment toPROFIBUSData transfer between buses
	FEATURES	Memory sharing type, improving data exchange speed

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.

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