The RMC20 is equipped to provide conversion from serial (RS232, RS485, or RS422) to fiber
optics, or between serial standards (RS232 to RS485 / RS422). Serial to fiber optic conversion
connections can be further implemented in point-to-point, as well as optical loop configurations. To
better illustrate all working modes, figure Section 2.5.1 through 2.5.3 will show example
configuration options, and relevant DIP switch settings.
2.5.1 Serial-to-Fiber Conversion: Point-to-Point
Figure 2.5.1.1 Serial-to-Fiber point-to-point topology
Figure 2.5.1.1 illustrates the serial-to-fiber conversion mode of operation. In this mode serial data
is converted directly into light impulses, and transmitted over multimode fiber optics. The serial
standard is selected by position 1 of the DIP switches: OFF (default) is for RS485 / RS422, and
ON is for RS232. Position 2 should be OFF for serial to fiber conversion. Position 6-8 should be
configured if RS485 communications are used, in order to have the appropriate turn-around timer
selected. Positions 6-8 do not impact communications in full-duplex mode.
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2006 RuggedCom Inc. All rights reserved
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