31
47DR OPERATING MANUAL EM-9509-B Rev.7
NOTE
Refer to the connection diagram as shown below to wire triplex shield cables.
HOST PC
T1
T2
T3
T4
T1
T2
T3
T4
DA
47Dx
RS-485
FG
Terminator
RS-485
RS-485
Remote Unit
FG
FG
47Dx
DB
DG
SLD
FG
TX+/RX+
TX–/RX–
SG
RX+
RX–
Terminator
*
Connect terminating resistors at both ends of the transmission line. When the 47DR is located at the end, close across the terminals
T2 and T3 with a leadwire.
■
SYSTEM CONFIGURATION EXAMPLES
• RS-485 / RS-232-C
• RS-485 / Ethernet
Lightning Surge
Protector for
RS-485/422
(model: MD74R
or MDP-4R)
*
1
RS-485 (Modbus-RTU)
RS-232-C
RS-232-C/RS-485
Converter
(model: R2K-1 or LK1)
Lightning Surge Protector
for RS-485/422
(model: MD74R or MDP-4R)
*
1
Digital Panel Meter
(model: 47Dx)
Max
Min
FZ
TZ
NG Zro Spn
TG
Hld
Tch
HH
H
P
L
LL
Max
Min
FZ
TZ
NG Zro Spn
TG
Hld
Tch
HH
H
P
L
LL
Max
Min
FZ
TZ
NG Zro Spn
TG
Hld
Tch
HH
H
P
L
LL
Lightning Surge
Protector for
RS-485/422
(model: MD74R
or MDP-4R)
*
1
Lightning Surge Protector
for RS-485/422
(model: MD74R or MDP-4R)
*
1
Digital Panel Meter
(model: 47Dx)
Ethernet
Communication Adaptor
(model: 72EM2-M4)
RS-485 (Modbus-RTU)
Max
Min
FZ
TZ
NG Zro Spn
TG
Hld
Tch
HH
H
P
L
LL
Max
Min
FZ
TZ
NG Zro Spn
TG
Hld
Tch
HH
H
P
L
LL
Max
Min
FZ
TZ
NG Zro Spn
TG
Hld
Tch
HH
H
P
L
LL
ETHERNET
RUN
SEND
FIELD
CNFG
RS-485
*
1 Insert lightning surge protectors recommended in this example if necessary.