6 - 13 6 - 13
MELSEC-Q
6 I/O Processing of Data Files
• File numbers specified by the OPEN instruction are managed by each program.
Therefore, no problem occurs even if the file number for the data file opened
simultaneously has a different number for each program.
# 4
A
# 1
B
# 3
C
Drive 0 ,
ABC.DAT
6.4.2 Number of data files that can be handled by each program
A maximum of eight data files can be opened simultaneously for each program. Also,
each program can open 8 data files under multitasking conditions. Thus, a maximum of
64 data files can be opened simultaneously for the entire communication module.
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...