4.3 Short Description Profibus DP, Cable, Connector
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Profibus DP cable according to DIN 19245 |
9-pin SUB-D connector housing, 90° angled for direct |
9-pin SUB-D connector housing for networking individual stations. |
PROFIBUS-DP (Process Field Bus Decentralized Periphery) is designed for efficient data exchange at the field level. Here, central automation devices such as PLC/PC communicate via a fast serial connection with decentralized field devices like drives, valves and frequency inverters. Process data transmission occurs cyclically. PROFIBUS is set up in a line structure (up to 32 participants possible). The ends of the lines must be equipped with a termination resistor. Profibus data is transmitted via a 2-wire shielded twisted pair cable using RS485 physical layer. Each bus participant has a pull-down resistor on the DATA-A line and a pull-up resistor on DATA-B, each 390?. The two end participants must have the termination resistor between DATA-A and DATA-B (220?) activated. The resistors are integrated into the connectors. The cable length in one bus segment can be 400 m (500 kbit/s) and 100 m (12 Mbit/s). 9-pin D-SUB connectors are used.
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Main Technical Features of Profibus Connector: Baud rate: 9.6 kbit/s ... 12 Mbit/s |
Pin assignment of 9-pin D-Sub connector
Data line A RxD/TxD-N (8) |
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Electrical Properties of the Cable: Operating voltage (peak voltage): * 100 V |
Other Required Interfaces |
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MPI/DP for communication with the PLC and PG. |
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USB for communication with the PLC and PG. |
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