• SCADALink TISC-485 Industrial DIN-Rail Mounted Optically Isolated
    RS232 to RS485 Converter, Class I Div 2.


The SCADALink TISC-485 is an isolated DIN Rail Mount RS232 to RS485 Converter designed for industrial application. It features both RS232 and USB Input and isolated RS485 and RS232 outputs.

The TISC-485 has the following features:

  • USB and RS232 Input
  • Simultaneous RS232 and RS485 Outputs
  • Terminal Block Connections
  • Isolated Outputs
  • USB Override
  • DIN Rail Mount
  • Class I Div 2 Certification

SCADALink TISC-485_Web


Simultaneous Isolated RS485 and RS232 Outputs

Allows flexibility in SCADA Installations where both RS-485 and RS-232 instruments need to be interfaced without adding extra converters or serial splitters.  The RS485 and RS232 ports are wired OR’ed. Isolated Outputs prevent ground loops.

SCADALink TISC-485_Web_RS232RS485Output

RS232 / RS485 Connections on Terminal Blocks

Terminal Block connections allow simple solderless field wiring by field and shop staff and allow the use of industrial cable and wire gauges from 12-30 AWG.

SCADALink TISC-485_Web_TerminalBlockConnection


USB Input & LOI Override Function

The USB LOI override function allows dedicated access to the RS-485 multi-drop bus when the USB is connected. This allows a Technician maintenance access to the connected RS-485 devices without disconnecting field wiring. The USB connection also allows technicians to perform maintenance tasks using modern laptops which lack physical serial (RS-232) Ports.





Feature & Specs


  • Industrial RS-232 to RS-485 Converter
  • USB Input Port – USB Override
  • Terminal Block Field Connections
  • DIN Rail Mount
  • Class 1 Div 2 Certification


Input Power10 to 30 VDC – 200mA Max, 1W Avg
Baud Rate1200 – 115,200 (Selectable)
Input (COM1)
RS-232:Tx, Rx, GND, RTS (Screw Terminals)
USB:Standard USB B-Type (Drivers)
Output (COM2)
RS-232: Tx, Rx, GND, RTS (Screw Terminals)
RS-485:2-Wire or 4 Wire (Selectable)
Termination 120 Ohms (Selectable)
Mounting35mm DIN-rail
Dimensions99m(L) x 23mm(W) x 116mm(H)
Temperature -40 to 70C
CertificationClass I Div 2, Group C, D T3C Suitable for Use in Class 1 Zone 2, IIB T3C







Connect to Flow Computers and Smart Instruments with RS485 Connections

Use TISC-485 to connect devices with RS485 connectivity to the SCADA host or Master RTU.  The TISC-485 has USB port with override function which allows programming and maintenance of devices without disconnection from radio modem or master RTU.

TISC_EFMTISC_Cameron Scanner 2000Fisher_ROC


Connectivity for Long Multidrop RS485 Runs, Multidrop EFM and Smart Instruments

Isolated RS485 connectivity prevents grounding issues and protects plant equipment for lightning surges.

SatSCADA_Water System   TISC--flow-computer-field


Wellsite SCADA Installations, Multi-Well Pad Instrumentation and Plant Instrumentation










TISC-485 Datasheet






What are the advantages of the TISC-485 over other RS-485 converters?

The TISC-485 for designed for rugged industrial application with  isolated outputs, 10-30VDC operation, Class I Div 2 certification, and DIN Rail mount.  One device can be used for all RS232/RS485 conversion applications simplifying inventory,sparing and support in your operation.

I only require RS232 to RS485 conversion. The TISC-485  has additonal features including USB input. Why should I use the TISC-485 in this application?

Frequently RS485 networks are used for smart instrument systems where the RS485 instruments are multi-dropped.  For maintenance of devices on the RS485 network, the instrument/device must be disconnected from polling by the PLC master. The USB override mode allows user connectivity from their laptop to the RS485 network without temporary disconnection from the host.

Why is there simultaneous RS232 and RS485 output on the TISC-485?

The TISC-485 for designed to provide easy connectivity of sites where both RS232 and RS485 devices need to be connected to a Wireless Modem with Rs232 interface.

Why does the TISC-485 have terminal block connections for RS232?

Terminal block connections are better suited for industrial applications where device interfaces are not always DB9 or DB25 often requiring custom cables to be made. Terminal block connections allow flexible connections to be made with devices that are terminated with terminal blocks, screw terminals, RJ11, RJ45, or DB type connectors. The TISC-485 terminal blocks supports larger gauge wiring used in industrial applications. Terminal blocks connections also make it easy to make custom cable lengths for interconnecting cables. Panel shop technicians, industrial electricians, and instrument technicians will find it easier to make cables and terminate to the TISC-485.

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