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3.3
Configuration of the EL232 XPCD
To configure the EL232 XPCD, you must know the following:
•
Baud rate
•
Indicator type
•
Data format - RS232 or 20 mA current loop
Once this information is known, it is entered through SW1, the eight-position DIP switch on the upper left hand
corner of the CPU board, shown below:
SW1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
J2
Enter the correct values from Table 3-2.
Baud Rate
Speed
SW1-1
1200
On
2400
Off
4800
On
9600
Off
Table 3-2. Baud Rate Setting
Refer to Table 3-3 on page 18 for specific switch
settings for applicable indicators.
MICROPROCESSOR
SW2
Figure 3-8. RS232 XPCD CPU Board
SW1-2
On
On
Off
Off
+5
+5
MOSI
SCK
PA7/LD
GND
GND
TxD
RxD
PB
PB6
PB5
PB4
The power must be off when these values are changed.
If the power is on, press the
board to enter the new values (see Figure 3-9).
J2
Figure 3-9. Reset Switch Location
1 2 3
J1
Reset
switch on the CPU
SW2
RESET SWITCH
Indicator Setup
GND
TxD
RxD
PB
PB6
PB5
PB4
17
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