Siemens S7-1200 System Manual page 309

Table 8- 56 Data types for the parameters
Parameter and type
IN IN
L IN
P IN
OUT OUT
Table 8- 57 ENO status
ENO Condition
1 No errors detected
0
L or P is less than or equal to 0
•
P is greater than maximum length of IN
•
Current length of IN exceeds maximum length of IN, or current length
•
of OUT exceeds maximum length of OUT
Maximum length of IN or OUT does not fit within allocated memory
•
Maximum length of IN or OUT is 0 or 255
•
Substring length (L) to be copied is larger than maximum length of OUT
string.
MID only: L or P is less than or equal to 0
MID only: P is greater than maximum length of IN
Current length of IN1 exceeds maximum length of IN1, or current length of
IN2 exceeds maximum length of IN2 (invalid string)
Maximum length of IN1, IN2 or OUT does not fit within allocated memory
range
Maximum length of IN1, IN2 or OUT is 0 or 255 (illegal length)
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
Data type Description
String Input string
Int Length of the substring to be created:
•
•
•
Int MID only: Position of first substring character to be copied
P= 1, for the initial character position of the IN string
String Output string
LEFT uses the left-most characters number of characters in the
string
RIGHT uses the right-most number of characters in the string
MID uses the number of characters starting at position P within
the string
Extended instructions
8.2 String and character
OUT
Valid characters
Current length is set to 0
Characters are copied until the
maximum length of OUT is
reached
Current length is set to 0
Current length is set to 0
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