PCI/ISA RS-232 to RS-485 Converter Card with RS-4

PCISA-7520R: Isolated RS-232 to RS-485 Converter Card

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The PCISA-7520 series card provides RS-232 to RS-485 (or RS-422) converter function that is exactly the same as I-7520 series. It is designed for easy installation, powered from the PCI or ISA Interface but without PCI and ISA functions. The PCISA-7520 series is equipped with both an RS-232 serial port and an RS-485 serial port. The RS-232 port is designed to communicate with the local Host PC, the RS-485 is designed to communicate with the remote IO module.

  • No External Power Supply required
  • No Driver installation required
  • 3000 VDC Isolation Protection
  • Auto Switching Baud Rate, 300 ~ 115200 bps
  • ESD Protection for the RS-232/422/485 Data Line
  • Transmission Speed of up to 115200 bps
  • Can be used in an ISA Bus, a PCI Bus or any system with an RS-232 Interface

Power PCISA-7520R PCISA-7520AR
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), when different cables are used, the transmission distance may change
Transfer Distance Max. 1,200 m at 9.6 kbps; Max. 400 m at 115.2 kbps
Max. Devices Supported 256 (Without repeater)
Self-Tuner Asic Inside Yes
Speed 300 ~ 115200 bps
ESD Protection Yes
Isolated Voltage 3000 VDC on the RS-232 side
Connector RS-232 9-Pin Female D-Sub x 1
RS-422/485 9-Pin Male D-Sub x 1
Input Voltage Range +5 VDC from the PC
Power Consumption 1.0 W
Dimensions (L x W x D) 118 mm x 72 mm x 22 mm
Operating Temperature 0 °C ~ +50 °C
Storage Temperature -20 °C ~ +70 °C
Humidity 0 ~ 90% RH, non-condensing

PCISA-7520R CR Isolated RS-232 to RS-485 Converter Card (RoHS)
PCISA-7520AR CR Isolated RS-232 to RS-422/485 Converter Card (RoHS)

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