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Using File Memory
Section 11-7
11-7-3 Initializing File Memory
11-7-4 I/O Memory Data Format
■
IOM Format
The IOM format is a data format used for binary data specified by the ladder
instructions, READ DATA FILE (FREAD(700)) and WRITE DATA FILE
(FWRIT(701)), in the CPU Unit.
If five words of data from the I/O memory (1234 hexadecimal, 5678 hexadeci-
mal, 9ABC hexadecimal, etc.) is contained in an attached file in IOM format,
the data will be stored in the attached file as shown in the following diagram.
Example: Binary data format with a delimiter after every 10 fields.
■
TXT Format
The TXT format is a data format (using tab delimiters) specified by the ladder
instructions, READ DATA FILE (FREAD(700)) and WRITE DATA FILE
(FWRIT(701)), in the CPU Unit. The format is configured according to the
specified FREAD(700) and FWRIT(701) parameters, as follows:
If data from the I/O memory (1234 hexadecimal, 5678 hexadecimal, 9ABC
hexadecimal, etc.) is contained in an attached file in TXT format, the data will
be converted into ASCII format in words or double-words. The words are
delimited by inserting tabs ([HT]: 09), and carriage returns (CR) after specified
fields ([CR][LF]: 0D0A).
Memory
Initialization method
Memory
Cards
1. Insert the Memory Card into the CPU Unit.
2. Initialize the Memory Card from a Programming Device
(Programming Consoles included).
EM File Mem-
ory
1. Specify in the PLC Setup the first bank to convert to file memory.
2. Initialize EM File Memory from the CX-Programmer.
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+0
1234
5678
9ABC
DEF0
1234
5678
9ABC
DEF0
1234
5678
+10
9ABC
DEF0
1234
5678
9ABC
DEF0
1234
5678
9ABC
DEF0
XX XX
XX 12 34 56 78 9A BC DE F0 12 34
I/O memory
.IOM file contents
48 bytes
(Reserved by the system.)
Data format
Use of CRs and CR position
• Words without delimiters
• Double words without delimiters
• Words delimited by tabs.
• Double words delimited by tabs
• No CRs
• CR after every 10 fields.
• CR after each field.
• CR after every 2 fields.
• CR after every 4 fields.
• CR after every 5 fields.
• CR after every 16 fields.
Содержание CJ2H-CPU6 - REV 02-2010
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Страница 38: ...12 Network Configurator Overview Section 1 5...
Страница 58: ...32 Selecting the Network Devices Section 2 3...
Страница 116: ...90 Auxiliary Area Data Section 4 5...
Страница 222: ...196 Message Communications Errors Section 7 6...
Страница 364: ...338 Using the Backup Tool Section 13 3...
Страница 402: ...376 CS CJ series Ethernet Unit Function Comparison Appendix A...
Страница 404: ...378 Ethernet Network Parameters Appendix B...
Страница 406: ...380 TCP Status Transitions Appendix C...
Страница 452: ...426 Precautions for Using Windows XP Vista or Windows 7 Appendix G...
Страница 460: ...434 Index...
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