Kontron EPIC/PM, User Manual

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12 11BSerial-Communication Interfaces
Kontron User's Guide
EPIC/PM
39
Notes: (*) To protect the external power lines of peripheral devices, make sure that:
-- the wires have the right diameter to withstand the maximum available current
-- the enclosure of the peripheral device fulfils the fire-protecting requirements of IEC/EN 60950.
To find the location of the serial ports on the board, please see the Appendix E: Connector Layout
chapter.
12.3 RS-485 Connector
You can use Connector X19 (COM D) for RS422/485 purposes.
Header Pin Signal Name Function
1 4 Channel A positive terminal
2 485_1RXD- Channel A negative terminal
3 GND Ground
4 4 Channel B positive terminal
5 485_1TXD-
Channel B negative terminal
The serial port COM D can only be used either as RS232 (Connector X17) or as RS422/RS485 (Connector
X19).
12.4 Configuration
From the BIOS set-up utility, you can set the serial input/output interfaces to enabled, disabled or auto.
The base I/O-addresses 3F8h, 2F8h, 3E8h, or 2E8h can be configured when enabled, as well as the
interrupts IRQ3, IRQ4, IRQ10 and IRQ11. COM D can be set to the RS232 or RS485 interface. Refer to the
I/O Device Configuration submenu in the
Appendix B: BIOS Operation chapter for information on
configuration.