hazem

Dear,
Shall you explain your reply (you means at fc required make network up and go online till read came right side.
If you want to monitor PQW just extend the size of process image area of CPU to cover that PQW and in variable table just right QW number.
Regards,

Only relevant for CPU with a variable size of the process image.

· Set the size of the process image (in bytes) here.
The range of the process image always starts with input or output byte 0.

In the case of S7-300-CPUs that support this function, there are some special considerations concerning the access to the process image area. For more information on these special issues, please refer to the documentation for the CPU.

"Peripheral addressing"
The process image often does not comprise the whole I/O address area of the CPU. So, for example, CPU315-2DP (6ES7315-2EG10-0AB0) has a total I/O address area of max. 2048 bytes of inputs/outputs, but only a fixed process image of 128 bytes.
If I/O address areas of a module are outside the process image, you must access these areas via "Peripheral addressing". The peripheral addresses are accessed immediately after addressing the addresses in the user program. Thus with "Peripheral addressing" it is always ensured that the actual value is read in immediately or an output is implemented immediately. This is particularly important for analog values and process alarms.