Installing Processor Boards
31
4
RS232 Connections
The two RS232 channels are connected as follows. Signal ground is pin 7, chas-
sis ground in pin 1.
External Indicators
Two LEDs (one green, one amber) are included on the front panel. The green
LED is the heart beat from the board’s CAN controller. The amber light illumi-
nates each time the CAN controller transmits on the CAN bus. Both should flash
steadily. These indicators are also displayed on the module’s LED display.
Table 4-3
RS232 Channel A Pinout.
Signal
Input/Output
Pin number
TXD
Out
2
RXD
In
3
RTS
Out
4
CTS
In
5
CSR
In
6
DCD
In
8
DB
In
15
DD
In
17
DA
On
24
DTR
On
20
Table 4-4
RS232 Channel B Pinout.
Signal
Input/Output
Pin number
TXD
Out
14
RXD
In
16
RTS
Out
19
CTS
In
13
DCDB
In
12
Summary of Contents for Computing Surface CS-2
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