3-10
C7-621 / C7-621 AS-i Control Systems
C79000-G7076-C621-01
3.4 Network Components
You require network components in the following situations:
Table 3-2 Network Components
Purpose Component
... to install the network PROFIBUS LAN cable
... to connect a node to the network Bus connector
... to amplify the signal
... to link segments
RS 485 repeater
... to convert signals for fiber-optic
transmission (only PROFIBUS DP
networks)
Optical link module
... to connect programming
devices/OPs to the network
PG connecting cable (tap line)
The following PROFIBUS LAN cables are available:
Table 3-3 LAN Cables
PROFIBUS LAN cable 6XV1 830-0AH10
PROFIBUS underground cable 6XV1 830-3AH10
PROFIBUS trailing cable 6XV1 830-3BH10
PROFIBUS LAN cable with PE sheath (for the
food, drinks and tobacco industry)
6XV1 830-0BH10
PROFIBUS LAN cable for festoons 6XV1 830-3CH10
The PROFIBUS LAN cable is a shielded twisted pair cable with the
following characteristics:
Table 3-4 Characteristics of the PROFIBUS LAN Cable
Characteristics Values
Characteristic resistance Approx. 135 to 160 Ω (f = 3 to 20 MHz)
DC loop resistance x 115 Ω/km
Operating capacitance 30 nF/km
Attenuation 0.9 dB/100 m (f = 200 kHz)
Permitted core cross-section 0.3 mm
2
to 0.5 mm
2
Permitted cable diameter 8 mm " 0.5 mm
Purpose
PROFIBUS LAN
Cable
Characteristics of
the PROFIBUS
LAN cable
Configuring an MPI Network
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