ISORS 422-C industrial interface converter RS232-RS485/422

ISORS422-C connects devices that communicate via RS232 serial interface to devices that support RS422/485 communication.

For this purpose, signals from the RS232 interface are converted into signals according to the RS422/485 standard, which allows a connection length of up to 1.2 km depending on the exchange rate. The transceivers of the two interfaces are galvanically insulated from each other, which allows data exchange in environments with high level of electromagnetic interference and difference in the potentials of the masses of the communicating devices.

ISORS422-C is housed in a box with IP 65 degree of protection, which enables operation in highISORS422 C 10 06 2024 3 min dustiness and/or humidity environments.

ISORS422-C can be mounted on a for or in panel, desk-top applications are also possible.

ISORS422-C comes equipped with power cable and RS232 connection cable, terminating in DB9F connector, wired for direct connection to a standard PC port.

Maximum number of devices connected to the RS422/485 network: 32. Up to 4 devices can be connected directly (via separate cable) to ISORS422-C.

The ISORS422-C can operate in full duplex or half duplex mode. In "full duplex" mode the receiver and transmitter are separate on the RS422 side, and simultaneous reception and transmission of data is possible. The RS422 connection is made by 4 or 5 wires. In this mode, it is possible to connect ISORS422-C to RS232 by three signals only - RxD, TxD, GND, without using RTS signal.

In "half-duplex" mode of operation the transceiver is common on the RS485 side, and simultaneous reception and transmission of data is not possible. The RS485 connection is made via 2 or 3 wires. RS485 reception or transmission is controlled by an RTS signal.



  • Galvanically insulated conversion from RS232 to RS422/485.
  • Modes: full duplex, half duplex, point-to-multipoint.
  • Operating modes: full duplex or half duplex.
  • Exchange protocol: point to point, point to multipoint.
  • Optical isolation: 1500VRMS.
  • Full three-way insulation between power supply and serial lines, protecting against equalizing currents.
  • Baud Rate: 115200 bps.
  • Supply voltage: 230 VAC.
  • Power consumption: ≤ 3 W.
  • Installation: on a wall, plate, in a panel.
  • Box dimensions (without cable glands): 158.5 x 82.1 x 55 mm.
  • Cable type for RS 485: twisted pair.
  • Wire cross-section: ≤ 1.5 mm².
  • Protection degree: IP65.
  • Operating temperature range: +5o ÷ +55o C.
  • Relative humidity: ≤ 95%.



Connecting devices communicating via RS232 to devices supporting RS422/485 communication.
Galvanic separation of communication segments.
Control and information systems for technological processes and installations.
Systems for collection and processing of data.
With measurement devices for utility applications.
Motor drives for industrial use.
Automated HVAC systems.
Management of petrol stations, etc.

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