Automating Manufacturing Systems - Process Control and ...

plc serial - 27.12
ACI
String ST9:10
Dest N7:0
ACI
String ST9:11
Dest N7:1
ADD
SourceA N7:0
SourceB N7:1
Dest N7:2
AIC
Source N7:2
String ST9:12
Figure 27.10
A String to Integer Conversion Example
Many of the remaining string functions are illustrated in Figure 27.11. When A is
true the ABL and ACB functions will check for characters that have arrived on channel 1,
but have not been retrieved with an ARD function. If the characters "ABC" have
arrived ( is an ASCII carriage return) the ACB would count the three characters, and
store the value in R6:0.POS. The ABL function would also count the and store a
value of four in R6:1.POS. If B is true, and the string in ST9:0 is "ABCDEFGHIJKL",
then "EF" will be stored in ST9:1. The last function will compare the strings in ST9:2 and
ST9:3, and if they are equal, output O:001/2 will be turned on.
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