Honeywell DCP552 Mark II User Manual page 42

Chapter 4. WIRING
5-wire system RS-485 connection diagram
Master station
4-14
Terminating resistor
Terminating resistor
Shield
RDA
RDB
SDA
SDB
SG
FG
Shield
Shield
Terminating resistor
Terminating resistor
Attach 1/2W or greater terminating resistances of 150Ω ±5% at each end of the
communications lines. Ground the shield FGs at one end in one location, not at
both ends.
Slave station side DCP552
SDA
60
SDB
61
RDA
62
RDB
63
SG
64
FG
Slave station side DCP552
SDA
60
SDB
61
RDA
62
RDB
63
SG
64
FG
Slave station side DCP552
SDA
60
SDB
61
RDA
62
RDB
63
SG
64
FG