Rievtech PR-12 Series, User Manual And Programmers Manual

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6.14.6 Look for the first character in the string
Input/output Operand Data type
IN1, IN2 VB,constant string, LB, *VD, *LD, *AC string
OUT VB, IB, QB, MB, SB, SMB, LB, AC, *VD, *LD, *AC byte
CHR -FIND : The instruction searches for the same character
as the string IN2 in the string IN1.Search starts from the
OUT start position.If a match character is found, the
character position is written to OUT.If a match character is
not found, the OUT is set to 0.
The longest length of a single constant string is 126
bytes.The longest comprehensive length of two constant strings is 240 bytes.
error conditions:
0006 Indirect address
0091 Operand range
009B Illegal index
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
：