MELSEC iQ-R Series (Label)

^*1<LABELNAME>: For structures, the LABELNAME will include the structure name. The maximum number of characters for the LABELNAME is 255, which includes the delimiter and address.

Ex.)

BOOL type single Label: "BOOLVAR"
BOOL array element: "BOOLARRAY[0012]"
INT type single Label: "INTVAR"
DINT type bit address: "DINTVAR.30"
REAL type 3D array: "REALARRAY[1,2,3]"
INT member of a structure ("TIMER"): "TIMERVAR.N"
STRING type variable: "MYSTRINGVAR"

The following input rules apply to LABELNAME and member names.

• Maximum of 255 single-byte characters.

• You can use alphanumeric characters (uppercase, lowercase), underscore, and double-byte characters (such as kanji).

• The first character cannot be a number.

• You cannot use ! " # $ % ' * & + , . / : ; < = > ? @ [ \ ] ^ ` { | } ~ and spaces.

• You cannot use data type keywords. ("WORD", "BOOL", "ARRAY", and so on)

• Label names are case-insensitive.

• You cannot use names reserved by IEC instructions. (*)

• You cannot use device names defined in MELSEC. (*)

• You cannot use function blocks or function names defined by the manufacturer or MELSEC instruction names. (*)

* BLUE error check cannot identify these names. If you use these names, a communication error will occur. Please refer to the External Device manual for names that are used.

^*2The number of elements in each dimension is displayed as l (minimum number of elements) to h (maximum number of elements).

^*3Array element numbers defined on a label start from 0.

You can calculate the size of the array with the number of elements in each dimension.

Example)

Word array "Array [0 ...15, 0 ...14, 0 ...13]", evaluates to array size of 3360 (= 16 × 15 × 14).

The maximum size of each device is as follows.

BOOL, INT, WORD, TIMER, COUNTER, RETENTIVETIMER: 2147483648

DINT, DWORD, LTIMER, LCOUNTER, LRETENTIVETIMER, TIME: 1073741824

STRING: 2147483648 ÷ size of STRING device

^*4The STRING label defines the maximum number of characters (up to 255 single-byte) in the data type settings.

^*5C (coil) and S (contact) are BOOL type devices. N (current value) is a WORD type device.

^*6C (coil) and S (contact) are BOOL type devices. N (current value) is a DWORD type device.

^*7The WSTRING label defines the maximum number of characters (up to 255) in the data type settings.