Also you can see the signal #80023, if the door is closed and it is locked, this signal must turn ON, if it is OFF when door is lock the problem is from wiring.
This fault is related to safety signal from door safety plug. Please check MXT board inside NX100 controller, this board is on bottom side of controller, check terminals number 9, 10 , 11 and 12.
In these terminal there is dual channel signal of safety door plugs.
Any one channel signal is getting break from field, either 24 V Or common singal.
You can verify by removing any one wire from above terminal of MXT card 9, 10, 11 and 12.
This alarm will come.
Please check field wiring of safety plug or any relay in circuit of safety plug signal is malfunctioning.
The alarm occurs in a cycle, when it occurs every time I measure the transition between channels - channel1 - 3-4 and channel2 - 5-6, the signals are ok.