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Appendix A – Technical Data
Fieldbus Link
A-2
Compatible Devices: All devices compatible with the
ABB Procontic CS 31 protocol
Size of the Link: 22 stations
Medium: Shielded, twisted pair RS-485 cable
• Termination: 120 Ω, ¼ W resistor (built in the NCSA-01
module)
• Maximum Bus Length: 500 m
• Specifications:
Parameter
Cross-section
Twists
Resistance
Impedance Characteristics
Capacitance
• Examples: Alcatel MCX-T, Draka Dracoda 2903
Topology: RS-485 Serial Link
Serial Communication Type: Asynchronous, half Duplex
Transmission Rate: 187.5 kbitps
Protocol: CS 31
Minimum
Maximum
0.22
0.8
10
100
100
150
150
NCSA-01 Installation and Start-up Guide
Unit
2
mm
/m
Ω
/km
Ω
nF/km
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