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MELSEC-Q
11 INSTRUCTIONS AND FUNCTIONS
Turning ON/OFF the RS (RTS) and DTR (ER) control signals
Control table format definition
Element position
Item
Description
%(0)
Processing code
Specify the processing code.
Processing Code 32
%(1)
RS (RTS) and DTR
(ER) control signals
Specify ON/OFF of the RS (RTS) and DTR
(ER) control signals to the lower and higher
bytes, respectively.
• This processing code is used to forcefully turn ON/OFF the RS (RTS) and DTR
(ER) control signals of the open communication channel.
Note that the RS-422 interface cannot be controlled by the DTR (ER) control
signal.
• Specify 32 for the processing code.
• The ON/OFF status of each control signal is specified in the following manner,
using the higher and lower 8 bits of %(1).
1:ON
0:OFF
Status of
control signal
(Ignore these bits.)
Since the ON/OFF settings of the RS (RTS) and DTR (ER) control signals require
specification using the lower and higher bytes, it is convenient to use hexadecimal
as shown below.
%(1)=&H
Express the lower byte as
a 2-digit hexadecimal number.
Express the higher byte as
a 2-digit hexadecimal number.
It is not allowed to turn ON/OFF the RS (RTS) and DTR (ER) control signals if control by
signals is enabled in the control parameter setting of a communication channel.
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...