Janz Tec emPC-X1600, Руководство по оборудованию

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4 - 10 emPC-X1600 ( Hardware Manual )
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Interfaces
4.1 Power Supply, Reset and Power LED
The power supply connector is implemented with a Phoenix Contact Plug type MC1,5/3-ST1F-5,08 BF
and is included in delivery. The assignment of this connector is shown in Figure 5 and Table 3.
Reset
Power
24VDC
S
Pin Description
1 (+) + 9..32 VDC
2 (S) NC, do not connect
3 (-) GND
Figure 5: Power connector Table 3: Power connector assignment
There is a Reset button next to the power connector. The LED next to the power connector is the power
LED.
Internal system GND is connected to the housing and routed to the power supply
connector via a common mode choke.
If voltage is applied the GND pin of the connector (e.g. + and - reversed) while the
housing is still connected to GND (e.g. by cables shields) then the common mode choke
or the internal PCB traces can be destroyed. The polarity reversal protection will not
protect this fault.
4.2 RS232 (Console)
The RS232 (Console) serial interface is provided by Super IO W83627 chip, hence it is a legacy
compatible serial port. The connector is a standard 9 pin D-SUB plug, but the interface is connected with
four wires only, table 4 shows the pin out. The names and the address for this connector are shown in
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1 n.c. 6 n.c.
2 RxD 7 RTS
3 TxD 8 CTS
4 n.c. 9 n.c.
5 GND
9pin male D-Sub
table 4: RS232 (Console) connector
1
6
4.3 RS232
Additional serial interfaces might be implemented by a XR16V2750 dual UART chip. This type of serial
port has proprietary implementation over the internal expansion bus. Hence it needs special software
driver. For a description of UART registers refer to the TI manual. The UART clock input is 14,7456MHz
to allow error free generation of standard baud rates. This RS232 variant provides all 8 interface signals
as shown in table 5.
1 DCD 6 DSR
2 RxD 7 RTS
3 TxD 8 CTS
4 DTR 9 RI
9pin male D-Sub
5 GND
1
6
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Janz Tec AG Rev. 1.1