SD
SDHC
Max. file size
2GB
4GB
Max. number of files (8.3 format): Root
directory
512
65535
Max. number of files (8.3 format): Sub
directory
65534
65534
Max. number of files (long format): Root
directory
170
21845
Max. number of files (long format): Sub
directory
56634
65534
Items
Description
Long file name
256 bytes for full path (when specifying route with \. It is 255
bytes when omitting route\.)
File name/Directory name
ASCII characters (H20 to H7E) / One-byte katakana (HA1 to
HDF)
Japanese (S-JIS code) (H’8140~H’9FFC,H’E040~H’EAA4)
■
Common precautions
● Error flags are not cleared even when normal arithmetic operations are performed. Use ERR
instruction for clearing error flags.
● An SD memory card access instruction cannot be executed when another SD memory card
access instruction is already being executed. Do not execute the SD memory card access
instruction until the active instruction is complete.
● It may take several scans for the processing to complete.
● Use in an interrupt program is not possible.
● Character string data is set in the order of number of characters then character data.
Char.7(byte 6)
Char.8(byte 7)
Char.6(byte 5)
Char.2( byte 1)
S
S+1
S+2
S+3
S+4
High
Byte address
Low
Char.5(byte 4)
Char.1(byte 0)
Char.3(byte 2)
No. of characters
Char.4(byte 3)
・・・
Number of characters stored in character strings
Character data
・・・
・・・
<Example> When specifying 5 for the number of characters, and "ABCDE" for
character data
DT0
DT
1
DT2
DT3
DT4
High
Byte address
Low
“E”
“A”
“C”
5
“B”
“D”
● Include the extension in the file name specification.
19.9 Common Precautions for SD Memory Card Access Instructions
WUME-FP7CPUPGR-12
19-23
Содержание FP7 Series
Страница 2: ... MEMO 2 WUME FP7CPUPGR 12 ...
Страница 18: ... MEMO xviii WUME FP7CPUPGR 12 ...
Страница 52: ... MEMO 1 34 WUME FP7CPUPGR 12 ...
Страница 61: ...Example 2 Use PSHS RDS or POPS instruction 2 1 Structure of Instructions WUME FP7CPUPGR 12 2 9 ...
Страница 104: ... MEMO 2 52 WUME FP7CPUPGR 12 ...
Страница 123: ...3 9 ANS AND stack WUME FP7CPUPGR 12 3 19 ...
Страница 125: ...3 10 ORS OR Stack WUME FP7CPUPGR 12 3 21 ...
Страница 129: ...3 11 PSHS Push stack RDS Read stack POPS Pop stack WUME FP7CPUPGR 12 3 25 ...
Страница 139: ...4 CNDE instruction 5 Step ladder instructions 6 Subroutine instructions 3 16 ALT Alternate out WUME FP7CPUPGR 12 3 35 ...
Страница 146: ... Application example of timer instructions serial connection of timers 3 17 TM Timer 3 42 WUME FP7CPUPGR 12 ...
Страница 147: ... Application example of timer instructions parallel connection of timers 3 17 TM Timer WUME FP7CPUPGR 12 3 43 ...
Страница 190: ...3 26 JP LBL Jump Label 3 86 WUME FP7CPUPGR 12 ...
Страница 239: ...Name Description SR8 ER 3 46 ST ST ST ST ST ST Data Comparison Start WUME FP7CPUPGR 12 3 135 ...
Страница 246: ... MEMO 3 142 WUME FP7CPUPGR 12 ...
Страница 251: ...Name Description SRA Depending on the comparison result SRB SRC 4 1 CMP Data Compare WUME FP7CPUPGR 12 4 5 ...
Страница 258: ... MEMO 4 12 WUME FP7CPUPGR 12 ...
Страница 277: ...F E D C B A 9 8 7 6 5 4 3 2 1 0 Digit 3 Digit 2 Digit 1 Digit 0 bit 5 8 DGT Digit Data Transfer WUME FP7CPUPGR 12 5 19 ...
Страница 304: ... MEMO 5 46 WUME FP7CPUPGR 12 ...
Страница 321: ...Name Description ER 6 7 DIVFP2 Division FP2 Compatible WUME FP7CPUPGR 12 6 17 ...
Страница 348: ... MEMO 6 44 WUME FP7CPUPGR 12 ...
Страница 388: ... MEMO 7 40 WUME FP7CPUPGR 12 ...
Страница 438: ... MEMO 8 50 WUME FP7CPUPGR 12 ...
Страница 450: ... MEMO 9 12 WUME FP7CPUPGR 12 ...
Страница 520: ... MEMO 10 70 WUME FP7CPUPGR 12 ...
Страница 602: ... MEMO 11 82 WUME FP7CPUPGR 12 ...
Страница 622: ... MEMO 12 20 WUME FP7CPUPGR 12 ...
Страница 650: ... MEMO 13 28 WUME FP7CPUPGR 12 ...
Страница 1160: ... MEMO 18 66 WUME FP7CPUPGR 12 ...
Страница 1188: ... MEMO 19 28 WUME FP7CPUPGR 12 ...
Страница 1211: ...20 4 ASCII Code Table JIS8 Code Table Reference Table ASCII Codes 20 4 ASCII Code Table JIS8 Code Table WUME FP7CPUPGR 12 20 23 ...
Страница 1220: ... MEMO WUME FP7CPUPGR 12 ...
Страница 1221: ... MEMO WUME FP7CPUPGR 12 ...