E L C O p e r a t i o n M a n u a l
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MN05003006E
1-62
D/A Signal OUT
VO0
IO0
AG
VO1
IO1
AG
CH1
Isolation wire
CH2
Voltage output
AC drive, recorder,
scale value...
AC drive, recorder,
scale value...
Current output
Isolation wire
Note: When the A/D module is connected to current signals, make sure to jumper “V+” and “I+”
terminals.
1.3.4.7 RS-485
Wiring
D+ D- SG
D+ D- SG
SG D+ D-
3
4
1
2
2
3
4
1. Master node
2. Slave node
3. Terminating resistor
4. Shielded cable
Note: 1. Terminating resistors are suggested to be connected to the master and the last slave
with resistor value of 120
Ω
. Place the resistors across the + and – RS485 terminals.
2. To ensure communication quality, please apply double shielded twisted pair cable
(20AWG) for wiring.
3. When voltage drop occurs between the internal ground references of two systems,
connect the systems with Signal Ground point (SG) for achieving equal potential
between systems so that a stable communication can be obtained.
Содержание ELCM Series
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