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2702/3 Command
Write CMD
Read
Write CMD
Read
Sends
~l
~T,~',ol
Add""j
Ml
~
Text
®
lHI
,
Mode
I
Text Out.
I
Control
Terminal Sends
Command
Write CMD
Sends
\ \
~
''''''01
Add,," ( \
Mode
?
I
Contra I
Terminal Sends
Figure 2-27. Sample Message Sequence
Example showing the letter Y in Baudot Code.
*
Received characters are checked for at least one
stop bit.
Transmitted characters are sent with two stop bits.
Figure 2-28. Baudot Transmission Code
StopiStopi
*
*
Positions 0 & I are automatically set to zero
on a receive operation.
I/O
Interface
Byte
Position 2 represents
the shift bit.
A one in psn 2 indi cates
a character in FIGS shift.
A zero in psn 2 indi cates
a character in LTRS shift.
Figure 2-29.
Transmission Code Conversion to Interface Code
2-46
<2>
c0
Read CMD
Write CMD
U
~
~
i
I
Control
:Text In
c$)
Text
®
Character
I/o
Interface Byte
P 0-7
LTRS
POOX11111
FIGS
P 00Xll0ll
Space
P 00X00100
x
=
0 or 1 (figure/letter shift)
Figure 2-30. Special Characters
Write
~
,
I
I
Control
Transmission Code
1-5
11111
11011
00100
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