Mitsubishi Electric MELSEC iQ-R Series User Manual page 72

Precautions
• When the "Select Key Item" checkbox was selected, configure so that the value configured for "Fixed Value" does not
overlap with other key items.
• In the case of two or more data sets, the continuous range of the data quantity amount from the specified control register is
subject. Make sure not to overlap with any control register specified in other item information.
• When sending an ASCII character string, the specified control register is referenced from the start address. If there is a
NULL character midway, a character string from the start point to the NULL character is sent. If the character string is
shorter than the specified number of characters to be sent, a NULL character or a space character is inserted into the string
depending on the type of terminator defined in the option settings.
• When an ASCII character string was received, the character string is registered to the control register, and then finally a
NULL character is registered. The following section shows when the data quantity setting is even or odd.
String [ABCDEF] When (data quantity is 6 (even)) has been received (Control register is configured at D1000)
B A D C F E
4241 4443 4645
D1000 D1001 D1002
String [ABCDE] When (data quantity is 5 (odd)) has been received (Control register is configured at D1000)
B A D C E
4241 4443 0045
D1000 D1001 D1002
Data types (item format codes)
Item Description
LIST List (length of elements)
BIN Binary
BOOL Truth value
ASCII ASCII
JIS8 JIS8
DCHAR ASCII
I1 1-byte integer (signed)
I2 2-byte integer (signed)
I4 4-byte integer (signed)
U1 1-byte integer (unsigned)
U2 2-byte integer (unsigned)
U4 4-byte integer (unsigned)
F4 4-byte floating-point
number
F8 8-byte floating-point
number
*1 When using Ver.1.27D or earlier, the number of units of available data is the same as that of non-GEM version of MELSEC-Q series.
*2 When "LIST" is selected for "Data Type," the number of units of data is automatically determined based on the setting of the element in
the list.
For details, refer to the following:
Page 71 Variable Length
7 BASIC FUNCTIONS
70
7.4 Transaction List
0000
NULL
D1003
NULL
Number of units of available data
MELSEC-Q series
Non-GEM version
No need to specify
0 to 1024
0 to 1024
0 to 1024
0 to 1024
0 to 1024
0 to 1024
0 to 1024
0 to 1024
0 to 1024
0 to 1024
0 to 1024
0 to 1024
0 to 1024
GEM version, GEM
advanced version
*2 *2
No need to specify
0 to 32000
0 to 32000
0 to 32000
0 to 16000
0 to 16000
0 to 32000
0 to 16000
0 to 8000
0 to 32000
0 to 16000
0 to 8000
0 to 8000
0 to 4000
MELSEC iQ-R series
Non-GEM version GEM version, GEM
*1
(Ver.1.28E or later) advanced version
*2
No need to specify No need to specify
0 to 262144 0 to 1024
0 to 262144 0 to 1024
0 to 262144 0 to 1024
0 to 262144 0 to 512
0 to 131072 0 to 512
0 to 262144 0 to 1024
0 to 131072 0 to 512
0 to 65536 0 to 256
0 to 262144 0 to 1024
0 to 131072 0 to 512
0 to 65536 0 to 256
0 to 65536 0 to 256
0 to 32768 0 to 128
*2