8 Operation of the Application
8.3 Sample project
Monitoring of 24 V load circuits
Entry-ID: 61450284, V1.1, 05/2014
63
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Status display
The background color of the text field depends on the value of the assigned bit of
the CHENNAL_STATE variable and of the state of output OUT 1 to OUT 4 of the
PSE200U module.
Table 8-4
Text field
Bit of variable
CHANNEL_STATE
Value
(bin)
Color of
the text
field
State
Channel 1
0
0
State OUT 1 = 1
1
State OUT 1 = 0
Channel 2
1
0
State OUT 2 = 1
1
State OUT 2 = 0
Channel 3
2
0
State OUT 3 = 1
1
State OUT 3 = 0
Channel 4
3
0
State OUT 4 = 1
1
State OUT 4 = 0
Alarm view
For the SIMATIC S7-300 CPU control messages (PLC alarms) are configured and
displayed in an alarm view at the SIMATIC Panel.
RESET
When pressing the “RESET” button, the automatic switch-off of outputs OUT 1 to
OUT 4 is reset.
STATUS of the PSE_DIAG block
The value of the STATUS_SAVE variable is displayed in an I/O field.
The following table shows an overview of the possible values of the
STATUS_SAVE variable.
Table 8-5
Value of the
STATUS_SAVE (hex)
variable
Description
0000
The PSE_DIAG (FB50) block works without error.
8001
Cycle time of 100 ms exceeded
8002
No signal change was detected at the IMPULSE input for at
least 6 s.
