Item Name Function
Variable Set the names of the variables used as the input signals in the
program. You can set any SAFEBOOL or BOOL variable that
is defined in the global variable table.
Reset T
ype Select the reset type in the box. The default value of the reset
time is a manual reset.
• Manual
If a manual reset is used for an input signal, a test is exe-
cuted for the manual reset scenario that uses the reset sig-
nal set in the Test Condition Area (b).
• Auto
If an automatic reset is used for an input signal, a test is
executed according to the auto reset scenario.
Input T
ype To set a test for two input signals, such as for a safety door or
two-hand switches, set the input type to 2 Inputs. If you set
the input type to 2 Inputs, a row is added to specify another
variable.
(d) Output
Setting
Area
Set the variables of the output signals to use in the Simple Automatic Test. You can set any
SAFEBOOL or BOOL variable that is defined in the global variable table.
(e) Expect-
ed Value
Setting
Area
A matrix of the variables that are specified in the input settings and output setting areas is dis-
played. Set the test target and the expected value of the output variable for each input varia-
ble.
The expected values that you set for the output variables have the following meanings:
• 0: If the input variable changes to FALSE, the output variable changes to F
ALSE.
• 1: If the input variable changes to FALSE, the output variable changes to TRUE.
You can import and export expected value settings to use spreadsheets or other applications
to easily edit the settings by copying and pasting them.
Setting Example
A setting example for the Simple Automatic Test is provided in this section for the application example
given in A-3-2 Safety Doors on page A - 32.
Application Overview from A-3-2 Safety Doors on page A - 32 is as follows.
Safety category/PL Safety device Stop category Reset
Equivalent to 4/PLe
(Safety Door)
Safety limit switches 1 and 2 0 Auto
Emergency stop pushbutton 0 Manual
M1 stops when safety door 1 (S3, S4) is opened.
M2 stops when safety door 2 (S5, S6) is opened.
Both M1 and M2 stop when the emergency stop pushbutton S1 is pressed.
The settings for the Simple Automatic Test are derived from the following points.
•
Variable that is assigned to the reset switch
• Variables that are assigned to safety input devices (except for EDM feedback)
• Variables that are assigned to safety output devices
Note 1. To make the program work correctly, set the initial values for simulation so that Activate terminal on the
safety function block will be to TRUE.
Note 2. To make the SF_EDM function block work correctly, set feedback for simulation.
The settings for the above application are shown in the setting areas for the Simple Automatic Test.
6 Programming
6 - 86
NX-series Safety Control Unit User's Manual (Z930)
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