Rievtech PR-12 Series, User Manual And Programmers Manual

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6.14 Character string
6.14.1 String length
Input/output Operand Data type
IN VB,Constant string, LB, *VD, *LD, *AC Character string
OUT VB, IB, QB, MB, SB, SMB, LB, AC, *VD, *LD, *AC Byte
STR-LEN :Instruction output “ IN ” string length.
The longest constant string is 126 bytes.
error conditions:
0006 Indirect address
0091 Operand range
ASCII constant string data type format
：
String is a series of characters, each character is stored as a byte.The first byte of a
string defines the length of the string, that is the number of characters.If a constant
string is entered directly into the program editor or data block, the string must start
and end with double quotation marks ("string constant").
Example:
When the string is "123456", the length of the string is 6.