Format Of Variable Data - Omron Sysmac NJ-series User Manual

10 FTP Server

10-6-4 Format of Variable Data

Binary Format
The IOM format is a data format used for binary data specified by the ladder instructions, FileReadVar
(Read Variables File) and FileWriteVar (Save Variables File), in the CPU Unit. You can also read and
save arrays and structures. Data is created as shown below when the data of variable Var_A is placed
in an attached file in binary format.
SD Memory Card
SaveVar instruction
Variable values are
written to the binary
file in sequence
from the beginning.
12344567
abcd0987
Binary file
Additional Information
• When you handle a binary file on the NJ/NX-series CPU Unit, always specify the binary data
type with the type command before you read or write the file via FTP. (Refer to 10-5-2 Using
the Commands.)
• For details on how to use ladder diagram instructions to process files, refer to the NJ/NX-
series Instructions Reference Manual (Cat. No. W502).
10-18
Var_A
executed.
16#1234
16#4567
16#abcd
16#0987
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)