Azbil DCP31 - Page 60

4-18
Chapter 4. WIRING

5-lead RS-485 mutual connection
Handling Precautions
• Be sure to connect SG termi-
nals each other.
Failure to do so might cause
unstable communications.
Connectterminatingresistors(150Ω±5%,1/2Wmin.)tobothendsofthetransmis-
sionline.
GroundingoftheshieldedFGterminalshouldbecarriedoutatonlyoneendandnot
bothends.
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SDA
SDB
RDA
RDB
SG
FG
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59
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SDA
SDB
RDA
RDB
RDA
RDB
SDA
SDB
SG
FG
SG
FG
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58
59
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SDA
SDB
RDA
RDB
SG
FG
Terminating resistor
Terminating resistor
Terminating resistor
Terminating resistor
Slave station DCP31
Shielded cable
Shielded cable
Shielded cable
Master station
Slave station DCP31
Slave station DCP31