In addition, all PPO types can be set up as word consistent or module consistent. For FC 100, 200 and 300, the process data area can be word or module consistent, whereas the parameter channel must always be module consistent. Module consistent data is transmitted as sets of interrelated words transferred simultaneously between the PLC program and the frequency converter. Word consistent data is transmitted as individual independent words between the PLC and the frequency
converter.
PCD传送的方式不同，Module consistent是作为相关的字的集合同时在PLC和变频器之间传送，Word consistent是作为单独独立的字传输。只是指PCD的传输可选，PCA必须Module consistent