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-7520AR lets you easily build an industrial grade, long-distance communication system using standard PC hardware.
The design of the isolation between the I-7520/A 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.
- Protocol: RS-422/485
- Connector: plug-in screw terminal block
- Speed: “Self Tuner” inside, auto switching baud
rate, from 300 to 115200 BPS
- 256 modules max in one RS-485 network
- 2048 modules max in one RS-485 network with
- Isolation voltage: 3000V
- Isolation site: RS-422/485
- Repeater request: 4,000 feet or over 256
- Power requirements: +10V dc ~ +30V dc
- Power consumption: 0.05A@24V; Max
The I-7520AR has three different output types
NOTE: The RS-422 and RS-485 output types couldn’t be used simultaneously,
which means that you can only select 1 type to output.
Type 1: 1-channel RS-485 output.
Type 2: 1-channel RS-422 output.
Type 3: 2-channel RS-485 output. (Support star network)