In the pickling line process, the level two system is responsible for communicating with the level one and level three system, and archiving all the information of the input and output coils. Level two system users are technical office specialists, repair, quality control and production experts, and production operators. By the request of the level two system, information about the work plans approved by shift foreman is sent as input information from the level three to the level one system.
In addition to the reactions, since the level two system is responsible for storing information, always and in any case, this system stores specific information from the coils during pickling in order to create a proper archive of the produced coils.