Chapter 12 Network Module AH10PFBM 12.4 PROFIBUS DP Network Wiring and Topology Please refer to the contents in chapter 14 in the SYCON.net help file on detailed introduction of the PROFIBUS DP network wiring and topology. 12.4.1 PROFIBUS Network Wiring 12.4.1.1 Definition of the PROFIBUS DP port pins 5 9 6 1 12.4.1.2 PROFIBUS Cable The PROFIBUS network supports two kinds of communication media, RS-485 electric cable and optical fiber. Currently we mainly face the customers using the wired medium though we also have the devices which support the wireless communication. Delta provides the standard PROFIBUS cable to the customers for purchase. The order number of the cable is 4009414800.
The PROFIBUS cable is the two-wire twisted shielded cable and the two wires inside the cable, A-green and B-red are connected to the pin 3(B) and 8(A) of the DP interface respectively. The part near the cable skin is filled with the woven net and aluminum foil as the shielded layer. The skin of the cable is purple as below. The characteristic impedance of the PROFIBUS cable should be from 100Ω to 220Ω, the cable capacitance between the conductors should be less than 60pF/m and the cross section of the cable should exceed 0.22mm2 (24 AWG).
12-7 PIN PIN name Description 1 -- N/C 2 -- N/C 3 RxD/TxD-P Receiving/sending data P(B) 4 -- N/C 5 DGND Data reference potential (C) 6 VP Power voltage – positive 7 -- N/C 8 RxD/TxD-N Receiving/sending data N(A) 9 -- N/C