Document RS232 configuration.

This commit is contained in:
Ron Sluiter
2004-01-13 21:00:06 +00:00
parent 7671bba225
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PI C-844
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Serial communication using the GreensSpring XM Octal I/O.
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The GreensSpring XM Octal I/O has a 16 pin jumper block for each serial port.
Assume (the manual does not define this) that the jumper pins are numbered
from, top to bottom, and from left to right; i.e.,
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
Then the "Default jumbering ..." depicted in Fig. 2 of the GreensSpring XM
Octal I/O manual is jumpered as follows; 1-5, 2-6, 9-13, 10-14.
The correct jumpering for the C-844 is; 1-2, 5-6, 13-16.