177
FINS Commands Section 5-3
5-3-5 MULTIPLE MEMORY AREA READ: 01 04
Reads in one batch the contents of the specified number of non-consecutive I/
O memory area words, starting from the specified word.
Execution Conditions
Command Format
Response Format
Parameters I/O memory area code (command)
Specify the type of data to read.
The memory areas that can be read are given in the following table (I/O Mem-
ory Area Codes). Refer to 5-2-2 I/O Memory Address Designations for the
specific addresses that can be used.
Beginning address (command)
Specify the first word/bit/flag to read.
I/O memory area code, data (response)
Indicates the data type and contents of the designated I/O memory area(s).
The data in the designated memory area(s) will be returned in the sequence
specified by the command.
The number of bytes that can be read for each item depends on the I/O mem-
ory area that is read. For details regarding data configuration, refer to Element
Data Configurations on page 163.
End code (response)
Refer to 5-1-3 End Codes for information on end codes.
Comments The maximum number of elements that can be read with each command
depends on the network as shown in the following table.
If nothing is specified after the command code, a normal response will be
returned, but nothing will be read.
If there is an error in the I/O memory area code or beginning address, the I/O
memory area will not be read.
Access right at
other device
UM read
protection
DIP switch UM
write protection
Network write
protection
OK OK OK OK
RUN mode MONITOR mode PROGRAM mode
OK OK OK
Beginning addressCommand
code
01 04
Beginning address
I/O memory area code
I/O memory area code
Command
code
01
04
End code Data
I/O memory area code
Data
I/O memory area code
Network Maximum number of elements
Controller Link Ethernet 167
SYSMAC LINK DeviceNet 89
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