Connection - AND Check Weighing Indicator AD-4404 Instruction Manual

9.2.2. 9.2.2.

Connection

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