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MELSEC-Q
7 COMMUNICATION WITH EXTERNAL DEVICES
For example, in order to execute the ZOPEN instruction, it is necessary to set the baud
rate, character length, parity, and stop bit parameters. If too many parameters are
listed after the instruction, however, the program will be hard to read.
If a control table is used here, the actual instruction becomes concise and the
parameters can be written simply as well.
Using a control table
100P%(0)=9600
:’
Baud rate
110P%(1)=&H108
:’
Parity & character length
120P%(2)=1
:’
Stop bit
130ZOPEN #1, P%( )
Содержание A1SD51S
Страница 183: ...11 13 11 13 MELSEC Q 11 INSTRUCTIONS AND FUNCTIONS RUN Before swap A 0 H924 A 1 H1159 After swap A 0 H1159 A 1 H924 OK...
Страница 331: ...11 161 11 161 MELSEC Q 11 INSTRUCTIONS AND FUNCTIONS REMARK See the CON ON OFF STOP and ZOPEN functions and Section 7 4...
Страница 557: ...11 387 11 387 MELSEC Q 11 INSTRUCTIONS AND FUNCTIONS REMARK See the CHR SPACE and SPC functions...
Страница 629: ...11 459 11 459 MELSEC Q 11 INSTRUCTIONS AND FUNCTIONS REMARK See the ZOPEN ZSEND and ZCNTL instructions and Section 7 3 4...
Страница 645: ...11 475 11 475 MELSEC Q 11 INSTRUCTIONS AND FUNCTIONS REMARK See the ZEVENT ZSIGNAL and DEF ZEVENT instructions...