PLC-5 / SLC Item Syntax

File Type	Syntax	Orientation 1	Access rights	Default File number	Address
Output	O	BIT	Read / write	0	octal
Input	I	BIT	Read	1	octal
Integer	N	WORD	Read / write	7	decimal
Binary	B	WORD	Read / write	3	decimal
Float	F	DOUBLE WORD	Read / write	8	decimal
String	ST	SLC-String	Read / write	9	decimal
SFC-Status	SC	WORD	Read / write	3	decimal
Status	S	WORD	Read / write	2	decimal
Timer	T	WORD	Read / write	4	decimal
Counter	C	WORD	Read / write	5	decimal
Control	R	WORD	Read / write	6	decimal
ASCII	A	WORD	Read / write	9	decimal
Long Integer	L	DOUBLE WORD	Read / write	9	decimal

WORD-oriented means that one word (16 bits) is addressed for each physical address.

DOUBLE WORD-oriented means that one double word (32 bits) is addressed for each physical address.

[File number]

Specification of the file number is optional. If it is not specified, the default file number is used. See column marked Default File Number in the table.

The start address specifies the address starting at which read or write accesses begin. The start address can consist of 2 pieces of information. Word (floating) number and when a single bit is accessed, then the bit number. The word number can be omitted with a bit. The word number or the floating number is introduced by a colon (:). The bit number is then introduced with a slash (/) <:word> or <:float> or </bit>.

The address is octal for some areas. It is decimal for others. See column labeled Address.

Either the word number, the float number or the bit number is specified as the start address.

Syntax	Description
O:0	Word 0 in Output file 0
O:0/12	Bit 10 (12 octal = 10 decimal) in output file 0
O/12	Bit 10 (12 octal = 10 decimal) in output file 0
I:37	Word 31 (37 octal = 31 decimal) in input file 1
I4:37/2	Bit 2 in Word 31 (37 octal = 31 decimal) in input file 4
I:1/0	Bit 0 in Word 1 in input file 1
B3/26	Bit 26 in binary file 3
B12:5/15	Bit 15 in word 5 of binary file 12
F8:0	Float 0
N23:4	word 4 of integer file 23
N23:4/2	Bit 2 in word 4 of integer file 23 = Bit 66 in integer file 23
N23/66	Bit 66 in integer file 23

[Array size]

Arrays are created to combine several units of one data type in a field together. Arrays are only possible for word areas and float areas. The array size is initiated with a #.

[Tani-Suffix]

A value can be represented in another format with the aid of a suffix. If no suffix is specified, the formats from the column Orientation apply.

[RsLinx-Suffix]

The alternative syntax allows you to use one or more suffixes. Every suffix is initiated. The order is arbitrary.

Suffix	Description	File Types
,N	Values are represented with sign. (Default is: no sign)	I, O, N, B, S, A
,M	Values are represented in Motorola-Format. (Default is: Intel-Format)	I, O, N, B, S, A, F
,L<xxx>	The len specifier for RSLinX Format. xxx is the count of array length	all
,SC<xxx>	Values are interpreted as a zero-terminated string. The maximum length is XXX.	N, A

PLC-5 / SLC Item Syntax

<Area>[File number]<Start address>[Array size][Tani-Suffix]

<Area>[File number]<Start address>[Array size][RSLinX-Suffix]

<Area>

[File number]

<Start address>

[Array size]

[Tani-Suffix]

[RsLinx-Suffix]