Memory size

The entire memory available for the external variables of each channel must be defined before controller start-up.

The value defined here determines the number of 24 byte blocks which compose the V.E. memory of each channel. The global external variables (cross-channel scope) use an own memory of equal size. The reserved V.E. memory of each channel and the global memory must always be larger than the memory area occupied by the memory layout .

If the available memory is not large enough for the external variables configured in the list, the error message P-ERR-21519 is output. In this case, either the reserved memory must be expanded or the size and number of configured external variables must be reduced.