Many of the remaining string functions are illustrated in See String Manipulation Functions. 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<CR>" have arrived (<CR> 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 <CR> 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.

String Manipulation Functions

The AHL function can be used to do handshaking with a remote serial device.