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【Technology Class】Protocol Interaction of Data Interaction of Evidence Internet of Things

【Technology Class】Protocol Interaction of Data Interaction of Evidence Internet of Things

usage scenarios

Have you encountered such a problem during the on-site debugging of the equipment?

Controllers of different brands want to achieve the needs of communication, but they encounter the following situations:

  • Controller protocols of different brands are inconsistent

  • Inconsistent communication interface

  • Communication Interface Hardware Limitations

  • Unified protocol programming is cumbersome

  • The controller has permission and cannot be programmed

  • After configuration and programming, it needs to be stopped to download, and the site cannot be stopped

  • The remote controller is already running, the client does not allow changes, etc...

Don't worry, UniMAT IoT Gateway can help you with one-stop solution!

UniMAT gateway can realize the communication between controllers of different brands and different interfaces through simple configuration, which perfectly solves the above problems.

 

UniMAT Internet of Things Gateway

0  Hardware interface

  • 2 Ethernet ports

  • 2 RS485 ports

  • 3 RS232 ports

0 2 Communication Protocol

SiemensSiemens
  _

S7-200(PPI)

serial port

S7-300(MPI)

serial port

S7-200 smart(PPI)

serial port

S7-200 smart TCP/IP client

network port

S7-300/400 Profinet

network port

S7-1200/1500 TCP client

network port

Mitsubishi
  _

Fx1S

serial port

Fx1N/2N

serial port

Fx3U/3G

serial port

Fx5U ASCIIMODE TCP

network port

Fx5U BINARYMODE TCP

network port

OMRON
  _

CJ/CS/CP(FINS)

serial port

CJ/CS/CP Ethernet/TCP(FINS)

network port

NJ/NX Ethernet/UDP

network port

host link

serial port

Delta
  _

DVP

serial port

AS Series Ethernet/IP

network port

LS
  power generation

LS_CNET

serial port

LS_CPU_DIRECT

serial port

LS_MASTER_K_CNET

serial port

LS_MASTER_K_CPU_DIRECT

serial port

LS_XBC_CNET

serial port

LS_XBC_CPU_DIRECT

serial port

Panasonic
  _

FP

serial port

Inovance
  _

H1U/H2U

serial port

H3U

serial port

H3U_Ethernet

network port

XINJE
  Xinjie

XC

serial port

XD

serial port

FATEK
  Yonghong

FBS

serial port

Modbus
  Modicon

Modbus_ascii_master

serial port

Modbus_ascii_slave

serial port

Modbus_rtu_master

serial port

Modbus_rtu_slave

serial port

Modbus_TCP/IP_CLIENT

network port

Modbus_TCP/IP_SERVER

network port

HollySys and Belize

LE/LM PLC

serial port

Simphoenix
  Quartet

E550

serial port

E580

serial port

EP_series

serial port

VS500

serial port

Trio

Trio Modbus-TCP/IP

network port

DL/T645 Electricity Meter

DL/T645-2007 standard

serial port

yudian

AIBUS

serial port

Hardware that meets the appeal interface and protocol can communicate directly with the gateway, and realize data exchange between devices through data transmission.

Application example 1 Instrument and PLC

The Siemens 1200PLC control system needs to communicate with multiple instruments on site. Since the 1200CPU does not have a 485 interface, or when the 485 interface is added, it needs to be shut down to download the configuration and the scene cannot be shut down. The gateway is used to realize the configuration process of transmitting instrument data to the 1200CPU. as follows:

0  Establish a connection with 2 devices in Uniface configuration software, among which 1200 Ethernet communication, instrument 485 interface modbus-RTU protocol.

When the serial port is connected to the device, the address mode can be selected from standard mode and extended mode. Standard mode is one-to-one communication, one master and one slave. The expansion mode is one-to-many communication, one master with multiple slaves. In the extended mode, the slave address is written in front of the address.

If the address 4x1 of the temperature meter is the temperature value, the temperature value needs to be transferred to DB1.DBW0 of Siemens 1200.

0  Configure output transfer

After this setting, the gateway transmits the data of the instrument to the Siemens 1200CPU. The maximum address length can be set to 100. The maximum number of data transfers is 100. Therefore, it is best to first assign the communication area to a continuous address during transmission, which can simplify the configuration.

After configuring the configuration, save and download the configuration to the gateway, so that the data of the instrument can be stored in the 1200CPU through the gateway. Only the data transmission function of the gateway is used here, and the networking function of the gateway is not required, so the gateway does not need to plug in the card or plug in the network cable to connect to the Internet. If the gateway needs to transmit data to the cloud platform, it can be added in real-time data, refer to the Internet of Things Quick Start Documentation, which is not described in this article.

Application example 2 PLC and DCS

There is a Siemens 312CPU on site, and now the data in the 312CPU needs to be displayed in the central control room of the factory. The central control system adopts a certain brand of DCS system, which provides an Ethernet port and supports the protocol modbusTCP client.

The gateway can be used to communicate with Siemens 312CPU through the MPI communication port, and the gateway can be configured as a modbusTCP server for the DCS system to read data.

0 1 Communication configuration
0 2 Configuration data transfer

When the gateway acts as a modbusTCP server, the internal address can be read and written by other clients. The corresponding relationship between the internal address and the modbus address is as follows:

internal address

Modbus address

LW0

4x1

LW1

4x2

LW2

4x3

After the configuration as shown in the figure below, the DB1.DBW0 in the Siemens 312CPU is associated with the 4x1 address. DCS reading and writing 4X1 is equivalent to reading and writing DB1.DBW0.

The IP address of the ModbusTCP server is the IP of the gateway, and the default is 192.168.1.100. It can also be modified in real time. The path is: Tools in the menu bar --> Gateway Settings à Open Network Configuration, and fill in the new IP.

After adding the output transmission configuration, save the project and download it to the gateway.

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