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F485 COMMUNICATIONS CONVERTER Page 3 of 8
g
GE Multilin
805701A1.CDR
FEATURES
• Converts between RS232, RS485 or Fiber
• 1200 to 57600 baud rates
• Isolated RS485 interface
• 50/125µm, 62.5/125µm, and 100/140µm fiber
sizes
• Front panel LEDs for power, RS232 Rx/Tx,
and RS485 Rx/Tx
• Two possible mounting arrangements
• 120 V AC (ANOMA AEC-3590 or other listed
direct plug-in Class 2 power supply rated
maximum 9 V DC output) or 220 V AC adapter
included.
• Additional power supply terminals supplied to
accept isolated 9 V AC / 9 V DC
• Two interface cables provided
(9pin – 9pin, 9pin – 25pin)
• Suitable for use with direct or modem
communications.
• E83849 UL Listed for the USA and Canada
DESCRIPTION
The F485 is a self-contained device for converting between RS232, RS485, and fiber optic signals. The
converter uses internal switches to select the conversion type (RS232 to RS485, RS232 to FIBER, or
RS485 to FIBER) and the RS485 communications baud rates up to 57600 baud. The F485 converter
uses the data on the serial port to determine direction and therefore requires no hardware handshaking
signals from the computer. The F485 converter can be powered via the power adapter supplied or by
connecting an external isolated 9 V AC/DC source to the power supply terminals located at the back of
the case. The F485’s versatility and simple design makes it ideal for use with all GE Multilin products in
direct and modem communications.
TYPICAL CONFIGURATIONS
Figure 1: RS232 to RS485 connection
Figure 2: RS232 to FIBER and FIBER to RS485