ABB ST语言编程(16)

13.5.3Identifier Too Long or Invalid

This error message is given under two circumstances:

1.Variablenaming rules have beendisobeyed-

the name begins with a number.

2.A key word has been used- both words“On” and“Off” are reserved

.

13.5.4Undefined Function Block

Usually caused by a typing error in

the name of the function block instance:The programmer has declared the function block with the nameMixTimer but hasreferencedMuxTimerin the code.

Chapter13-16