WAGO-I/O-SYSTEM 750 750-862 Controller Modbus TCP; G4; 2ETH; ECO Controller Modbus TCP; Generation 4; 2 x ETHERNET; ECO Manual
The 750-862 programmable Fieldbus Controller (PFC) combines the functionality of an ETHERNET-based Fieldbus Coupler, as the head station of the node assembly, with the functionality of a Programmable Logic Controller (PLC).
The 750-862 can be used for applications in machine and plant construction as well as in the process industry and building technology.
The two Ethernet interfaces and the integrated switch make possible the wiring of the fieldbus in line topology. Thus additional infrastructure elements such as switches or hubs can be void. Both interfaces support Autonegotiation and Auto-MDI (X).
With the DIP switch the last byte of the IP address, as well as the assignment of the IP address (DHCP, BootP, firm setting) can be given.
In the controller, all input signals from the sensors are combined. After connecting the controller, the controller determines which I/O modules are on the node and creates a local process image from these. Analog and specialty module data is sent via words and/or bytes; digital data is grouped bit-by-bit.
The local process image is divided into two data zones containing the data received and the data to be sent.
The data of the analog modules is mapped first into the process image. The modules are mapped in the order of their physical position after the controller.
The bits of the digital modules are combined into words and then mapped after the analog ones in the process image. If the number of digital I/Os is greater than 16 bits, the controller automatically begins a new word.
According to IEC 61131-3 programming, data processing occurs in the Controller. The process results can be output directly on sensors/actuators or transmitted via fieldbus to the higher-order controller.
The fieldbus connection consists of two ports (RJ-45). A integrated switch, which is operated in the store and forward mode, connects those fieldbus ports with the CPU.Both ports support:
• 10BASE-T / 100BASE-TX.
• Full / Half duplex.
• Autonegotiation.
• Auto-MDI(X).
WAGO-I/O-PRO creates application programs that adhere to IEC 61131-3. CODESYS by 3S (the standard programming system) serves as the basis of WAGO-I/O-PRO, which was expanded specifically with the target files for all WAGO controllers.
The fieldbus controller has 4 MB program memory, 4 MB data memory and 32 kB retentive memory available for the IEC 61131-3 programming.
Depending on configuration the user can access all fieldbus and I/O data.
In order to send process data via ETHERNET, the controller supports a series of network protocols.
The EtherNet/IP protocol is implemented for exchanging process data. For the management and diagnosis of the system, the HTTP and SNTP protocols are available.
For the data transfer via ETHERNET the FTP and SFTP are available.
For the automatic assignment of the IP address in the network, alternatively DHCP or BootP can be used.
The user can program clients and servers via an internal socket-API for all transport protocols (TCP, UDP, etc.) with functional modules. Library functions are available for function expansion.
This controller is based on a 32-bit CPU with multitasking capabilities, allowing several programs to be executed in a near-simultaneous manner.
The controller has an internal server for the configuration and administration of the system.
By default, the controller’s built-in WBM pages of HTML contain information on the configuration and status of the controller, and can be read using a normal web browser. In addition, a file system is implemented that allows you to store custom HTML pages in the controller using FTP download or to store your own HTML pages or call up programs directly.
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