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Raptor MicroATX – Installation Guide
SER C RS-422/485 Receiver Mode (Optional
Feature)
The Receiver of SER C has two operating modes when used as RS-
422/485. The jumper JP8 either selects receiver always on (1-2) for RS-
422 operation or receiver controlled by the RTS signal (2-3). For Half
Duplex operation (RS-485) the option controlled by RTS signal must
be selected. For more information please refer to Appendix C.
Table 1-4 SER C RS-485 Receiver Mode Selection
SER C RS-485
1
Receiver
JP8
* Manufacturer's Settings.
SER D RS-422/485 Receiver Mode (Optional
Feature)
The Receiver of SER D has two operating modes when used as RS-
422/485. The jumper JP10 either selects receiver always on (1-2) for
RS-422 operation or receiver controlled by the RTS signal (2-3). For
Half Duplex operation (RS-485) the option controlled by RTS signal
must be selected. For more information please refer to Appendix C.
Table 1-5 SER D RS-485 Receiver Mode Selection
SER D RS-485
1
Receiver
JP10
* Manufacturer's Settings.
1
The receiver may be always on or controlled by RTS, but the
transmitter is always controlled by RTS. Therefore, when using RS-
422, the software application must enable RTS.
6
Always On
Mode
Always On
Mode
Controlled by
1-2*
Controlled by
1-2*
RTS
2-3
RTS
2-3
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