Description
The ProfiBus coprocessor is a communication module that enables a PLC-5 processor to connect to and operate as a master/scanner in a ProfiBus DP network. Through the coprocessor, the PLC-5 processor communicates and controls multivendor and/or other Allen-Bradley slave devices in the network.
The coprocessor supports one interface for DP (Decentralized Periphery), and an RS-232 Config port. Use the coprocessor’s female 9-pin D-sub connector to connect to the network. Complete the connection using a shielded twisted pair cable with a male connector.
The coprocessor contains no built-in termination resistors but does provide (on the ProfiBus connector) the 0V and 5V signals required for external network termination. The coprocessor supports the signals required for the control of ‘dumb’ repeaters.
When powering up the coprocessor, the default communication parameters and database are used. Once specific values for the communication parameters and database are defined and sent to the coprocessor, they are stored in the coprocessor’s RAM and can be saved in flash memory upon request. The coprocessor uses values in flash memory the next time power-up occurs or if the coprocessor is reset (configuration previously loaded in RAM but not saved into flash memory will be lost). Using the SST ProfiBus Configuration Tool, reset these values back to the defaults.
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