ABB AC500 PLC - 1.3.7.3 PROFIBUS Connection Details

*) For planning and commissioning of new installations use modules in Active
status only.
1.3.7.3 PROFIBUS Connection Details
9-pin D-sub connector, male
Parameter Value
Fastening torque 0.4 Nm
Pin Signal Description
1 Shield Shielding, protective earth
2 not used -
3 RxD/TxD-P Reception / transmission line,
positive
4 CBTR-P Control signal for repeater,
positive (optional)
5 DGND Reference potential for data
lines and +5 V
6 VP +5 V, supply voltage for bus
terminating resistors
7 not used -
8 RxD/TxD-N Reception / transmission line,
negative
9 CNTR-N Control signal for repeater,
negative (optional)
Parameter Value
Type Twisted pair (shielded)
Characteristic impedance 135 Ω...165 Ω
Cable capacity < 30 pF/m
Conductor diameter of the cores ≥ 0.64 mm
Conductor cross section of the cores ≥ 0.34 mm²
Cable resistance per core ≤ 55 Ω/km
Loop resistance (resistance of two cores) ≤ 110 Ω/km
The maximum possible cable length of a PROFIBUS subnet within a segment depends on the
baud rate (transmission rate).
Attachment
Plug for the Bus
Cable
Assignment
Bus Cable
Cable Lengths
Device Specifications
Communication Modules (AC500 Standard) > PROFIBUS
2019/04/17 3ADR010121, 13, en_US 133