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4-Wire P-NET cable

4-WIRE P-NET specifies the use of a shielded cable having 2 individual twisted pairs.

The communication pair must have a characteristic impedance of 100 to 120Ω and a minimum core cross-section of 0.22mm² / 24 AWG. To ensure maximum signal integrity over long bus cables, it is recommended that the core cross-section of the communication pair be increased.

Bus lengthRecommended core cross-section
0 - 100mMinimum 0.22 mm² / 24 AWG
100 - 400mMinimum 0.34 mm² / 22 AWG
400 - 1200mMinimum 0.50 mm² / 20 AWG

The size of the power pair should be calculated in consideration of maximum current, voltage drop, cable resistance, bus length etc.

Cable, recommended for 4-WIRE P-NET

Cable for 4-WIRE P-NET must be carefully selected to ensure stable communication as well as for providing sufficient power for all devices.

Resistance in wire
mm2
AWGΩ/km
0.212488
0.2572
0.342252
0.534
0.52
2034
0.7523
0.821822
1.018
1.311613
1.511
1.681510.4
2.08148.5
2.57
2.6136.7

The values in the above table are only intended as a guide; wire cross section area and resistance vary by cupper alloy, number of stranding etc.

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