Problem receiving data from PLC160?

Question

Do it yourself

Temperature sensors were connected to the controller - 21 pcs.
Through CoDeSys I receive data from sensors from the PLC160 (connection with the controller via Ethernet).
At the moment, 2 more sensors have been connected - "reed" sensors to determine the opening / closing of doors . I
received the data without problems.
I connected 2 more sensors - I started receiving data from only 8 sensors, I stopped from the rest.
Didn't change the configuration.
What could be the problem?

Answer 1

The first thing I would do in such a situation would be to remove the new sensors and check the operation of the old configuration in order to exclude the failure of the controller itself during the installation of new ones.