Measurement Computing Digital232 User Manual
Page 32
Section 3
Command Descriptions
3.10
Data received for output to the digital ports must be contained within a
prefix (D) and a suffix (Z) and each 4-bit quantity must be separated by
semicolons. Leading zeros are not required. If the amount of data sent is less
than the number of bits programmed as outputs, the least-significant bits will
contain the data sent and the most-significant bits will be cleared to logic zero.
If the data sent is greater than the number of bits programmed for output or
selected by the Pn command, the Digital232 will generate a conflict error and
ignore the entire command string. The Data Strobe output is pulse for
approximately 50 microseconds after new data is output on the selected port(s).
Example:
F2
select ASCII/binary mode
R0
read data from the Digital232, display shows
0001;1111;1111;0001
D1111;0;1010;0101Z
R0
read data from the Digital232,
display shows 1111;0000;1010;0101
F3 Format - ASCII Decimal
In the F3 format, the data is described in decimal 8 bit multiples and
transmitted in ASCII. Each decimal number (0 to 255) to be output must be
separated by semicolons.
F3 Number Decimal Equiv F3 Number Decimal Equiv
000
0 008
8
001
1 009
9
002
2 010
10
003
3 020
20
004
4 100
100
005
5 200
200
006
6 210
210
007
7 255
255
Data received for output to the digital ports must be contained within a