7 - 1 7 - 1
MELSEC-Q
7 COMMUNICATION WITH EXTERNAL DEVICES
7
7 COMMUNICATION WITH EXTERNAL DEVICES
The communication module is equipped with several communication interfaces and the
communication with external devices and terminals can thus be achieved through
various interfaces.
A
D51H
Terminal
External device
(Printer)
7.1 Correspondence between the Interface and Channel Number
A unique number, called “channel number,” is assigned to each interface.
In order to communicate with an external device or terminal, specify which of the
communication module interfaces is to be used using the channel number in question.
A
D51H
1
3
4
2
Channel number
Channel number
Channel number
Channel number
CH3(RS-422/485)
CH2(RS-232C)
CH1(RS-232C)
CH4(PARALEL)
1 QD51-R24 does not have CH2 (RS-232C).
2 A1SD51S does not have CH4 (PARALLEL).
1
2
REMARK
The communication module uses the non-procedure protocol for all communication
with external devices and terminals.
To perform protocol communication, the user needs to write a protocol control
program.
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...