App - 27 App - 27
MELSEC-Q
APPENDIX
Appendix 7.1.2 DC1/DC3 reception control enabled
Transmission of data from a BASIC program is controlled by DC1/DC3 control signals
received from an external device.
If a DC1 control signal is received, data transmission starts or continues.
If a DC3 control signal is received, data transmission is stopped. When a data
transmission is stopped due to the reception of the DC3 control signal, the remaining
data will be sent when a DC1 control signal is received again later.
Channel open 1
(BASIC program)
ZOPEN • • • •
ZSEND • • • •
Communication module
Send buffer
(OS)
Transmission result
External device
Waiting to send
DC3 control signal
DC1 control signal
Data
Data
A
D51H
1 When the communication channel is opened, the status of the send buffer is the same as when a DC1
control signal is received even if the DC1 control signal is not received from the external device.
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...