8.6 Monitoring Safety Input Signals
8-9
8
Monitor Displays
(Un
)
8.6
Monitoring Safety Input Signals
The status of safety input signals can be checked with the safety I/O signal monitor (Un015). The procedure
for displaying the status, the method of interpreting the display, and a display example are shown below.
8.6.1
Displaying Safety Input Signals
Use the following procedure to display the input signal.
8.6.2
Interpreting Safety Input Signal Display Status
The status of allocated signals is displayed on the 7-segment display on the panel operator.
Input terminals correspond to LED numbers as shown in the following table.
• When the safety input signal is in ON status, the top segment (LED) is lit.
• When the safety input signal is in OFF status, the bottom segment (LED) is lit.
Note: Input signals use the following circuit configuration.
• OFF: Open
• ON: Short-circuited
Example
Step
Display after
Operation
Keys
Operation
1
Press the MODE/SET Key to select the monitor display.
2
Press the UP or DOWN Key to select Un015.
3
Input signal display sta-
tus
The present status can be displayed on the 7-segment dis-
play on the panel operator by pressing the DATA/SHIFT
Key for approximately one second.
Refer to
8.6.2 Interpreting Safety Input Signal Display Sta-
tus
for how to read the display.
4
Press the DATA/SHIFT Key for approximately one second
to return to the display of step 2.
MODE/SET
DATA/
MODE/SET
DATA/
MODE/SET
DATA/
MODE/SET
DATA/
Display LED Number
Input Terminal Name
Signal Name
1
CN8-3, -4
/HWBB1
2
CN8-5, -6
/HWBB2
3
−
Reserved
4
−
Reserved
5
−
Reserved
6
−
Reserved
7
−
Reserved
8
−
Reserved
4 3 2 1
6
7 5
8
Top: ON
Bottom: OFF
Number
Analog
ON (short-circuited)
