Appendix
A - 84
NX-series Safety Control Unit User’s Manual (Z930)
A-13 Execution Scenarios for the Simple
Automatic Test
The operations given in the following table are executed in order for the Simple Automatic Test.
No Test phase Executed processes Confirmations Displayed errors
1 Initialize • Set all the registered input vari-
ables to TRUE. <1-1>
• Set the reset variable to TRUE
<1-2>
• Set the reset variable to FALSE
<1-3>
Examine all the registered
output variables are TRUE.
<1-4>
<Error>
" Cannot Execute"
<Remarks>
"The following output vari-
ables are FALSE after the
reset."
2 Shutoff Test • Set the input variable to FALSE
<2-1>
Examine the output variables
expect to be 0 in the expected
value setting table are
FALSE. <2-2>
<Error>
"Failed"
<Remarks>
"The following output vari-
ables do not match with
the expected values."
Examine the output variables
expected to be 1 in the
expected value setting table
are TRUE. <2-3>
<Error>
"Failed"
<Remarks>
"The following output vari-
ables do not match with
the expected values."
3 Return Test (Reset
Type: Auto)
• Set the input variable to TRUE.
<3-1>
Examine all the registered
output variables are TRUE.
<3-2>
<Error>
"Failed"
<Remarks>
"The following output vari-
ables do not return."
4 Return Test (Reset
Type: Manual)
• Set the input variable to TRUE.
<4-1>
• Set the reset variable to TRUE
<4-2>
• Set the reset variable to
FALSE. <4-3>
Examine the output variables
expected to be 0 in the
expected value setting table
are FALSE. <4-4>
<Error>
"Failed"
<Remarks>
"The following output vari-
ables do return."
Examine all the registered
output variables are TRUE.
<4-5>
<Error>
"Failed"
<Remarks>
"The following output vari-
ables are FALSE after the
reset."