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4-20
Chapter 4. WIRING
●
5-lead RS-485 mutual connection
Provide terminators of resistance 150
Ω
±5%, 1/2 W min. at both ends of the
communications path.
Grounding of the shielded FG terminal should be carried out at only one end and
not both ends.
In this connection, the Yamatake CMA50A105 can be used as a host station
converter.
SDA
SDB
RDA
RDB
SG
FG
SDA
Shielded
cable
SDB
RDA
RDB
SG
Shielded cable
Shielded cable
Master station
Terminator
Terminator
Terminator
Terminator
Slave station DCP32
SDA
SDB
RDA
RDB
SG
RDA
RDB
SDA
SDB
SG
FG
Slave station DCP32
Slave station DCP32
57
58
59
60
61
57
58
59
60
61
57
58
59
60
61
FG
FG