12. Communication Design Examples z 3 kinds of messages can be used in data area: 1. Includes parameter area and process area. Used for transferring parameters in master-slave system. The 6 words are as below: 2. Only process area. Consist of control word (status word) and frequency. The 2 words are as below: Process area (PZD ) 3. Text area for reading/writing text through data area (used when reading/writing parameter P621-631): Process area (PZD ) Text area (PKW ） z Definition of the control word for AC motor drive in PZD area: DVP-PLC Application Examples 12-54 PKE IND PWE1 PWE2 PCD1 PCD2 Process Parameter area（PKW） PCD1 PCD2 PKE IND CH1 CH2 ...........
CHn PCD1 PCD2 Bit Bit status = 0 Bit status = 1 00 - Preset ref. lsb 01 - Preset ref. msb 02 DC braking - 03 Coasting stop - 04 Quick stop - 05 Freeze output frequency - 06 Ramp stop Start 07 - Reset 08 - JOG 09 No function 10 Data not invalid Data valid 11 - Activate relay 01 12 - Activate relay 02 13 - Choice of setup lsb 14 - Choice of setup msb 15 - Reversing