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77
9.2.2.
9.2.2.
9.2.2.
9.2.2.
Connection
Connection
Connection
Connection
Terminals
Interface
Circuit
Multiplue Drop Connection for Command Mode
SDA
SDB
SG
FG
Unit 1
AD-4404
Address 1
SDA
SDB
SG
FG
Host computer
SDA
SDB
SG
FG
Unit 2
AD-4404
Address 2
SDA
SDB
SG
FG
Unit 32
AD-4404
Address 32
Terminator resistor
100 ~ 120
Ω
1/2W
Terminator resistor
100 ~ 120
Ω
1/2W
Connect a terminator resistor at the
indicator that is farthest from the host
computer.
The host computer may include
the terminator resistor.
The host computer may have
inverse polarity terminals.
Use twisted-pair wire.
Use shielded cable, if it is needed.
SDA
RS-485
A
B
SG
C.LOOP
FG
SDB
SG
Shield
AD-4404 Inside
A
B
SG
RE/DE
Содержание Check Weighing Indicator AD-4404
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