Most industrial computer systems provide standard RS-232 serial ports. Though widely accepted, RS-232 has limited transmission speed, range, and networking capabilities. The RS-422 and RS-485 standards overcome these limitations by using differential voltage lines for data and control signals, which transparently converts RS-232 signals into isolated RS-422 or RS-485 signal with no need to change any hardware or software. The I-7520/I-7520A lets you easily build an industrial grade, long-distance communication system using standard PC hardware.
The design of the isolation between the I-7520 and the I-7520R/AR is different. If the user wants to supply power from the PLC/PC, the I-7520R/AR should be used, otherwise the isolation will be broken. Refer to the I-7000 bus converter manual for detailed information.
Auto Switching Baud Rate, 300~115200 bps
3000 VDC Isolation Protection on the RS-485 side
Transmission Speed of up to 115200 bps
ESD Protection for the RS-232/422/485 Data Line
Power Input of +10 ~ +30 VDC
Supports Operating Temperatures from -25 °C ~ +75 °C
DIN-Rail
I-7520 CR
Isolated RS-232 to RS-485 Converter (RoHS)
I-7520A CR
Isolated RS-232 to RS-422/485 Converter (RoHS)
I-7520-G CR
Isolated RS-232 to RS-485 Converter (Gray Cover) (RoHS)
I-7520A-G CR
Isolated RS-232 to RS-422/485 Converter (Gray Cover) (RoHS)
I-7520R CR
RS-232 to Isolated RS-485 Converter (RoHS)
I-7520AR CR
RS-232 to Isolated RS-422/485 Converter (RoHS)
I-7520R-G CR
RS-232 to Isolated RS-485 Converter (Gray Cover) (RoHS)
I-7520AR-G CR
RS-232 to Isolated RS-422/485 Converter (Gray Cover) (RoHS)
GPSU06U-6
24 VDC/0.25 A, 6 W Power Supply
DIN-KA52F
24 VDC/1.04 A, 25 W Power Supply with Din-Rail Mounting
I-7510 CR
Isolated RS-485 Repeater (RoHS)
I-7510A CR
Isolated RS-422/485 Repeater (RoHS)
CA-0915
9-Pin Male-Female D-Sub Cable, 1.5 m
Models
I-7520
I-7520R
I-7520A
I-7520AR
Interface
Serial Interface
RS-232
TxD, RxD, GND
RS-422
-
TxD+, TxD-, RxD+, RxD The RS-422 and RS-485 cannot be used simultaneously
RS-485
Data+, Data-
2-wire Cabling/4-wire Cabling
Belden 8941 (2P twisted-pair cable)/Belden 8942 (4P twisted-pair cable), if different cables are used, the transmission distance may change
Transfer Distance
Max. 1,200 m for at speed 9.6 kbps; Max. 400 m at 115.2 kbps