Mitsubishi QD51 Programming Manual page 140

7 COMMUNICATION WITH EXTERNAL DEVICES
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(2) To enter data from the keyboard of a terminal
1) Open the interface and set the communication parameters according to the terminal to be used.
ZOPEN # <channel number>, <control table>
ZCNTL # <channel number>, 0, <control table>
2) Specify the channel number of the interface to which the terminal used for keyboard input is
connected using the ZIDV instruction.
ZIDV <channel number>
3) Use the following instructions (functions) to enter data from the keyboard of the terminal.
Note, however, that some instructions (functions) cannot handle certain character codes.
INPUT
LINE INPUT
INKEY$
INPUT$
(numerical expression)
4) Close the interface and switch the input source back to the console to finish entering data.
ZCLOSE # <channel number>
ZIDV 0
Be careful about the following points when entering data from the keyboard of a terminal.
• The program cannot be stopped by pressing the Break / Ctrl + C keys when entering
data from an external device other than the console via the ZIDV instruction.
The code 03H is entered when the INKEY$ or INPUT$ function is used.
• If the DC1/DC3 control is activated for the interface to which the terminal is connected and a code
corresponding to DC1 or DC3 is entered, the DC1/DC3 control is carried out and data cannot be
entered.
• Do not use keys which are equivalent to the Esc key or the FDH code on the terminal.
Data may not be input correctly.
Character codes 0 through 1Fh (control codes), 2Ch (comma), and 7Fh
( Delete ) cannot be handled as data.
Character codes 0 through 1Fh (control codes) and 7Fh ( Delete )
cannot be handled as data.
Character code 0h cannot be handled as data.
MELSEC-Q
Please be careful not
to enter codes that
cannot be handled.
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