1235
Text String Processing Instructions Section 3-33
Flags
Precautions The maximum number of characters to be read that can be designated by S1
or S2 is 4,095 (0FFF hex). If more than that are designated, an error will be
generated and the Error Flag will turn ON.
If 0000 (hex) is output to D, the Equals Flag will turn ON.
Example In this example, FIND$(660) is used to find one character from within a text
string.
3-33-8 STRING LENGTH: LEN$(650)
Purpose Calculates the length of a text string.
Ladder Symbol
Variations
Applicable Program Areas
Operands S: Text String
Name Label Operation
Error Flag ER ON if more than 4,095 characters are designated by S1
or S2.
ON if the Communications Port Enabled Flag for the com-
munications port number specified as the Com Port num-
ber for Background Execution is OFF when background
processing is specified.
OFF in all other cases.
Equals Flag = ON if 0000 (hex) is output to D.
OFF in all other cases.
S1: D00100
S2: D00200
D: D00300
Text string CText string: ABCDEF
LEN$(650)
S
D
S: Text string first word
D: First destination word
Variations Executed Each Cycle for ON Condition LEN$(650)
Executed Once for Upward Differentiation @LEN$(650)
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification Not supported
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK OK
15 0
S
to
Text string data: 4,095 characters max. + NUL
S + maximum 2,047 words
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