B&B Electronics 232D4SS8 ユーザーズマニュアル
Documentation Number 232D4SS84502 Manual
15
B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
The turn off string also adds the ASCII ESC character to the
front of the three-character turn off string.
The first character is the ASCII ESC character. The second and
third character of the command control string is the user-defined
character. The fourth character is the ASCII EOT character
(decimal 4).
character. The fourth character is the ASCII EOT character
(decimal 4).
Example 2: To turn off all ports and the user defined character is
ASCII STX (decimal 2).
Send to Master Port: ESC STX STX EOT
(27 2 2 4 decimal)
It is recommended that the user-defined character be a non-
printable character. The turn off command will then consist of four
characters that will not show up on the current port device.
characters that will not show up on the current port device.
If you were writing a program in GWBASIC to select port E of
the 232D4SS8 (address zero) you would form a string like this:
SW0E$ = CHR$(27) + CHR$(2) + "0" + "E"
You could then send SW0E$ to select port E. Similar strings could
be used for turning on the other ports. To turn off the ports the
string might look like this:
be used for turning on the other ports. To turn off the ports the
string might look like this:
TOFF$ = CHR$(27) + CHR$(2) + CHR$(2) + CHR$(4)
NOTE: There is no delay through the Smart Switch
and the data is not buffered.
and the data is not buffered.
Programming the User Defined Character
The user-defined character comes programmed as the ASCII
STX character (decimal 2). You can change this to any 8-bit
character you wish by reprogramming DIP switch 2 (SW2). SW2 is
located on the printed circuit board inside the 232D4SS8. Refer to
Figure 2. SW2 is an eight-position switch with each position equal
to a certain weight. Refer to Table 4. It is recommended that a non-
printable character be defined.
character you wish by reprogramming DIP switch 2 (SW2). SW2 is
located on the printed circuit board inside the 232D4SS8. Refer to
Figure 2. SW2 is an eight-position switch with each position equal
to a certain weight. Refer to Table 4. It is recommended that a non-
printable character be defined.