Internal Input Dark Test Function - Mitsubishi Electric NZ2GFSS2 32D S1 User Manual

Internal input dark test function

This function outputs test pulses to the input circuit of the safety remote I/O module to detect a circuit-fixing failure. The test
pulses turn off the external input signals (X0 to X1F) that are on to detect the failure.
T0
Test pulse
Test pulse output circuit
• The test using this function is conducted to all input signals except for the signals where "Wiring selection of
input" (parameter) is set to "0: Not used".
• The internal input dark test function is not affected by the setting of input response time.
Operation at error detection
If an error is detected by the internal input dark test, the safety remote I/O module becomes the error state (I/O data error).
For details on the error state, refer to the following.
Page 138 Error codes related to the safety remote I/O module
Setting method
The parameter setting is not required for the internal input dark test function.
8 FUNCTIONS
104
8.3 Input Diagnostic Function
NC
NC
T1 X0
Test pulse
Input circuit
Safety remote I/O module
X1