What is a compact plc cpu modules

OB1 is the main program loop execution module corresponding to the block, which  micro smart plc is the backbone of STEP 7 program. Most other OB corresponds to a different interrupt handler in. Each OB and is closely linked to its corresponding type and priority. OB1 relatively low priority, it is a priority, so OB1 usually can always be interrupted by other OB.
Control Function Module FC1-FC8, according to the current running status of the device in which the implementation of the corresponding control functions, each corresponding equipment to complete action on the device; temperature control module FC10, FC11 control function is read into the device horizontal, vertical and two The plc intelligent controller  current direction of the temperature signal, the D / A conversion and digital processing, and the results compared with the set temperature, with the result of the comparison, the control horizontal, vertical and two of the heater switch, the switching frequency and the response speed of the heater can be achieved by setting the PID controller parameters.
 Shared data storage module DB100 for the current operating status and  cpu module plc working methods, including horizontal, vertical in both directions sealing temperature setpoint and actual values ​​into / out of the running speed setting material as well as the need to adjust with the timer , the counter value is set such that the stored data can be called at any of the functional modules.