750-343 PROFIBUS DP Modular I/O System Manual
This manual describes the field bus independent WAGO-I/O-SYSTEM 750 with the Fieldbus Coupler for PROFIBUS.
System Description:
The WAGO-I/O-SYSTEM 750 is a modular, fieldbus independent I/O system. The structure described here consists of an ECO fieldbus coupler (1) and up to 64 connected fieldbus modules (2) for any kind of signal. Together, these make up the fieldbus node. The end module (3) completes the node.
ECO couplers for fieldbus systems such as PROFIBUS DP, INTERBUS, CANopen and DeviceNet are available.
The ECO coupler contains the fieldbus interface, electronics and a power supply terminal. The fieldbus interface forms the physical interface to the relevant fieldbus. The electronics process the data of the bus modules and make it available for the fieldbus communication. The 24 V system supply are fed in via the integrated power supply terminal.
The fieldbus coupler communicates via the relevant fieldbus.
At first the ECO coupler is concepted for applications with digital I/O functions. Bus modules for diverse digital and analog I/O functions and special functions can be connected as well. The communication between the ECO coupler and the bus modules is carried out via an internal bus.
The WAGO-I/O-SYSTEM 750 has a clear port level with LEDs the status indication, insertable mini WSB markers and pullout group marker carriers. The 3-wire technology supplemented by a ground wire connection allows for direct sensor/actuator wiring.
Fieldbus ECO-Coupler 750-343:
Description:
The Fieldbus Coupler 750-343 maps the peripheral data of all I/O modules in the WAGO-I/O-SYSTEM 750 on PROFIBUS DP.
In the initialization phase, the Fieldbus Coupler determines the physical structure of the node and creates a process image with all inputs and outputs. I/O modules with a bit width smaller than 8 can be combined to form one byte in order to optimize the address space.
In addition the possibility exists to deactivate projected I/O modules. In this manner the physical structure of the node can be individually designed with regard to the peripheral signals, without undertaking any changes to an already existing control application. This is done by correspondingly configuring the modules with the aid of the software configuration tool (for instance, WAGONETCON, COM PROFIBUS, STEP7, ProfiMap, etc.)
The diagnostics feature is based on an identification and channel based diagnostics in accordance with EN 50170 (PROFIBUS). Thus it is not necessary to program modules for the evaluation of manufacturer specific diagnostics information.
● Process data length
♢ Max. 32 byte input process image
♢ Max. 32 byte output process image
● Automatic recognition of transmission speed on the PROFIBUS from9.6 kBd to 12 MBd
● All I/O modules from the WAGO-I/O-SYSTEM 750 are supported
● Process image can accept virtual placeholders for future expansion
● Configurable substitute value for each channel
● D-Sub 9 pole bus connection
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