Home > Seika SC485B interface converters from Control Devices (Aust)

Seika SC485B interface converters from Control Devices (Aust)

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article image RS232/ RS485 interface converter for connection of Seika sensors with RS485 interface to RS232 port of a computer
Control Devices (Aust)  presents a range of RS232/ RS485 interface converters for connection of Seika sensors with RS485 interface to the RS232 port of a computer.

Seika SC485B interface converters consist of an aluminium housing with a PCB, a 9-channel SubD port for the RS232 bus, a 4-channel clamp for the RS485 bus, a plug for the external 12V supply voltage, two LEDs for monitoring system operation, the bus voltage level and termination resistances and the interface electronics with voltage level converters and transmission line drivers and receivers.

Key features of Seika SC485B interface converters:

  • Robust pressure die cast aluminium housing (IP65) with saltwater proof coating
  • 9-15 Volt supply voltage
  • Either connection polarity
  • Internal 5 Volt stabilising and internal generation of +/- RS232 voltage levels
  • Half-duplex RS232/ RS485 bus
  • Up to 128 participants on RS485 bus
  • 9 channel SubD RS232 port
  • LED indicating bus activity
Technical Specifications

  • Supply voltage: 12Volt ± 3Volt
  • Current drawn: Approx. 30mA + current drawn by sensors
  • RS485 terminals: 4 x 1.5mm²
  • RS232 port: DSub9 socket
  • RS485 Bus: Half duplex
  • Terminator resistance: 100 Ohm, can be disengaged by solder bridge
  • ESD protection on RS485 bus: ±15kV (Human Body Model)
  • Participants on single bus: Max. 128
  • Data transfer rate: Max. 250kbps

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