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ASCII Protocol - Reference Guide
May ’00
1 = Logical high, 0= Logical low
Once the TIRIS reader has received the command character Y it echoes it to the PC
in order to indicate that the TIRIS reader is ready to receive a parameter (range: 0 to
F) specifying the logic output level. Once the command has been executed the TIRIS
reader sends carriage return and line feed back to the PC.
Example:
Comment
PC --> Reader:
Y
Command character
Reader --> PC:
Y
PC --> Reader:
1
Output lines:
I/O 4 = 1
I/O 5 = 0
I/O 6 = 0
I/O 7 = 0
Reader --> PC:
<CR><LF>
2.3.7
COMBINED Commands - SET OUTPUT & GET I/O Status
This command combines and extends the I/O STATUS command (2.3.5) and SET
OUTPUTS command (2.3.6). Once the TIRIS reader has received the command
character H it echoes it to the PC in order to indicate that the TIRIS reader is ready
to receive further parameters specifying the operation to the I/O ports.
8
1
0
0
0
9
1
0
0
1
A
1
0
1
0
B
1
0
1
1
C
1
1
0
0
D
1
1
0
1
E
1
1
1
0
F
1
1
1
1
Note:
In order to prevent the TIRIS reader from damage please take care
not to exceed the Electrical Characteristics, given in the relevant man-
ual.
Table 4: Output Line Settings
ASCII
Character
Status of
I/O 7
Status of
I/O 6
Status of
I/O 5
Status of
I/O 4