Stringlrc - Omron NJ501-1500 Reference Manual

2 Instruction Descriptions

StringLRC

The StringLRC instruction calculates the LRC value (horizontal parity).
Instruction
StringLRC Calculate Text
String LRC
Variables
Name Meaning
In Text string
to process
Out LRC value
Bit strings
In
Out
Function
The StringLRC instruction calculates the LRC value (horizontal parity) of text string to process In. The
LRC value is the exclusive logical OR of the character codes for the text string in In. The LRC value
(Out) is given as a hexadecimal text string with a NULL character stored at the end.
The following example is for when In is '1234'.
LD
StringLRC
EN
In
'1234'
In '1234'
Character codes
31 32
2-506
Name FB/FUN
FUN
I/O Description
Input Text string to process
Output LRC value
ENO
abc
Exclusive logical OR
33 34
Graphic expression
(@)StringLRC
EN ENO
In Out
Valid range
Depends on data type.
3 bytes max. (two sin-
gle-byte alphanumeric
characters plus the final
NULL character)
Integers
ST
abc:=StringLRC('1234');
Out = abc
'04'
NJ-series Instructions Reference Manual (W502)
ST expression
Out:=StringLRC(In);
Unit Default
''
---
--- ---
Times, durations,
dates, and text strings
OK
OK