7 - 8 7 - 8
7 ERROR LIST
No. Error
Message
Cause
Corrective
Action
30
Member '*1' of '*2' is
undefined. (C8024)
(Structure element name or
FB variable name enters
*1, and structure name or
FB name enters *2.)
The element name of the structure is wrong or the
variable name of the FB is wrong.
Example 1: Structure element name: mem1
Diverted structure name: InsSDT1
InsSDT1.mem2 := 100;
The wrong structure element name is
described.
Example 2: Input variable: IN1
Diverted FB name: FB1
FB1(IN1 := 10);
d0 := FB1.aaa;
An undefined FB output variable is
described.
Correct the element name
of the structure, or correct
the variable name of the
FB.
31
Member '*1' of '*2' which
cannot be used as a FB
output is used. (C8025)
(FB variable name enters
*1, and FB name enters *2.)
The FB variable that cannot be used as FB output
was used.
Example 1: Internal variable (word type): TEMP1
Diverted FB name: FB1
D100 := FB1.TEMP1;
The internal variable is used as FB
output.
Use the correct FB variable
and describe it as FB
output.
32
Variable '*1' (FB: *2)
cannot be used other than
an argument. (C8026)
(FB variable name enters
*1, and FB name enters *2.)
The FB variable using method is wrong.
Example 1: [FB definition]
Input variable: IN1
Output variable: OUT1
Diverted FB name: FB1
X1 := FB1.IN1;
The input variable is used as FB output.
Use the correct FB variable
in the argument of the FB.
33
It is a undefined structure.
(C8027)
The structure name is illegal.
Example 1: Structure: None
Word type label: W_TMP2
W_TMP2.mem1 := 100;
The wrong structure is described.
Correct the structure name.
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