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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 Ω
• 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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