Communication With A Terminal - Mitsubishi QD51 Programming Manual

7 COMMUNICATION WITH EXTERNAL DEVICES

7.3.2 Communication with a terminal

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The following explains how to communicate with a terminal connected to either the RS-
232C or the RS-422/RS-485 interface of the communication module, as well as
precautions when carrying out the communication.
Items described in this section do not apply to a terminal connected to an interface
that is designated as a console by the DIP switch of the communication module.
(1) To display data on the terminal screen
1) Open the interface and specify communication parameters as well as the Kanji code conversion
according to the terminal to be used.
ZOPEN # <channel number>, <control table>
ZCNTL # <channel number>, 0, <control table>
KMODE <conversion specification>
2) Specify the channel number of the interface to which the terminal used for screen output is
connected using the ZODV instruction.
ZODV <channel number>
3) Use the following instructions to output to the terminal screen or to control the screen:
PRINT
PRINT USING
LOCATE
CLS
Note that the TAB and SPC functions can also be used with the PRINT instruction.
A
D51H
4) Close the interface and switch the output destination back to the console to finish the screen
display.
ZCLOSE # <channel number>
ZODV 0
When the ZODV or ZIDV instruction is used to switch screen display to the terminal,
the key codes for the cursor control keys and the function keys of the terminal are
automatically converted to the codes that correspond to the communication module.
The refore, it is more convenient to use these instructions than to use the ZSEND and
ZRECEIVE instructions described in Section 7.3.3.
Displays data on the screen of the specified terminal.
Displays data on the screen of the specified terminal.
(Format can be specified.)
Specifies the data display location at the specified terminal screen.
Clears the screen of the specified terminal.
ZODV • • • • • •
PRINT • • • • • •
MELSEC-Q
Terminal
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