Industrial Communication for Automation and Drives - Induteq

Process or field communication
Typical practice-related data
The table below contains empirical
values which are intended to
serve as recommendation for the
selection of the optimum
network.
AS-Interface PROFIBUS DP PROFIBUS PA
1
2
Connectable • Binary inputs/outputs •Binary inputs/outputs •Field devices in Zone 1
field devices • Analog inputs/outputs •Analog inputs/outputs hazardous area
•Intelligent field devices, (type of protection: [EEx ia],
e.g. drives, measuring explosive group: IIC)
sensors, slaves with data •Non hazardous area
preprocessing (such as (measuring transducer,
ET 200X® or S7-300®, actuators or valves)
SIMOTION®)
Programming/ -Via PROFIBUS DP Via PROFIBUS DP
commissioning with STEP 7 and PDM and PROFIBUS PA with the
SIMATIC PDM (Process
Device Manager) tool
3
Number of slaves
• Max. 62 • Max. 125 • 125 DP/PA links
• 15 typ. • 20 to 30 typ • 31 field devices per DP/PA link
4
5
6
7
AS-i cycle time Max. 5 ms for 31 slaves --
Max. 10 ms for 62 slaves
Bus cycle time -2 ms at 12 Mbit/s typ. 200 ms at 31.25 kbit/s typ.
10 ms at 1.5 Mbit/s typ.
Network capacity Electrical: Electrical: up to 9.6 km Hazardous area: max. 1.0 km
With/without repeater 100 m Optical: up to 90 km Non-haz. area: 1.9 km
Topology Line, tree, star Line, tree, ring, star Line, tree, star
8
9
10
11
12
Transmission media Unshielded two-wire cable Shielded two-wire cable Shielded two-wire cable
Available degrees IP 20 IP 20 IP 20
of protection IP 65 to IP 67 IP 65 to IP 67 IP 65 to IP 67
[EEx ia]
Standard EN 50295 IEC 61158/EN 50170 IEC 61158-2
Power supply via bus Yes No Yes
Bus interface CP, integrated interface CP/IM, integrated inter-Link or segment coupler
or link
face or link
14