&MGPEVDU.5
BUS RS485
SHIELDED CABLE
• 50-metre spool (optional CBSX)
• Pair of twisted and shielded conductors
• Conductor section 0,22 mm
2
…0.35mm
2
• Nominal capacity between conductors
< 50 pf/m
• Typical impedance 120 ȍ
• Use a suitable cable to RS485 network
SERIAL LINE
• Maximum number of components: 40
• Maximum length of every single serial
line 1000 m
• Difference in potential between the
"earth" of the two RS485 devices:
lower than 7 v
• Provide guards to protect against
electrostatic discharges of atmospheric
origin
• Complete last network component.
INSTALLATION OF THE SERIAL LINE
• Performed by trained and qualified
personnel in data communication
networks
• Performed up to standard
• Separated from other cables, especially
from power cables or supplied with
different voltages
• Far from cables or devices that can
affect electromagnetically.
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