3.3. CONNECTION OF CURRENT LOOP DEVICES
Current Loop line is connected to TX+, TX-, I1+, I1-, RX+, RX-, I2+, I2- terminals of converter as below.
3.3.1. CONNECTION TO DEVICE WITH PASSIVE TRANSMITTER & PASSIVE RECEIVER
Fig. 7. Example connection of device with passive transmitter and passive receiver to ADA-1021
3.3.2. CONNECTION TO DEVICE WITH ACTIVE TRANSMITTER & ACTIVE RECEIVER
Fig. 8. Example connection of device with active transmitter and active receiver to ADA-1021
7
ADA-1021
ADA-1021
V +
V -
Power
Tx+
Tx-
Rx+
Rx-
Current Loop
Device
I1 +
I1 -
I2 +
I2 -
Rx +
Current Loop
connector
Tx +
Tx -
Rx -
V -
V+
Active
Transmitter
Active
Receiver
Passive
Transmitter
Passive
Receiver
Current Loop
connector
DSR-4
GND-5
RS232 connector
DCE/DB-9F
Tx-2
Rx-3
RTS-8
CTS-7
DTR-6
ADA-1021
V +
V -
Power
V -
V +
Tx+
Tx-
Rx+
Rx-
Current Loop
Device
I1 +
I1 -
I2 +
I2 -
Rx +
Tx +
Tx -
Rx -
Current Loop
connector
Passive
Transmitter
Passive
Receiver
Active
Transmitter
Active
Receiver
Current Loop
connector
DSR-4
GND-5
RS232 connector
DCE/DB-9F
Tx-2
Rx-3
RTS-8
CTS-7
DTR-6
