Mitsubishi Electric MELSEC Q Series Programming Manual page 272

7 ERROR LIST
No. Error Message
Member '*1' of '*2' is
undefined. (C8024)
(Structure element name or
30
FB variable name enters
*1, and structure name or
FB name enters *2.)
Member '*1' of '*2' which
cannot be used as a FB
31 output is used. (C8025)
(FB variable name enters
*1, and FB name enters *2.)
Variable '*1' (FB: *2)
cannot be used other than
32 an argument. (C8026)
(FB variable name enters
*1, and FB name enters *2.)
It is a undefined structure.
33
(C8027)
7 - 8
Cause
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.
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.
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.
The structure name is illegal.
Example 1: Structure: None
Word type label: W_TMP2
W_TMP2.mem1 := 100;
The wrong structure is described.
Corrective Action
Correct the element name
of the structure, or correct
the variable name of the
FB.
Use the correct FB variable
and describe it as FB
output.
Use the correct FB variable
in the argument of the FB.
Correct the structure name.
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