CHAPTER5 OPERATING
5.3.3 PZD word 3-10
In PZD word 3-10 the user can determine which inverter parameters that should be transferred to/from the inverter every bus-cycle.
With some of the PPO types (PPO2, 4, 5) it is possible to read and write parameters cyclically. Parameter write values are placed in the PZD’s 3-10 transferred from the master to the inverter. Parameter read values are placed in the PZD’s 3-10 transferred from the inverter to the master. However, the meaning of the data transferred in PZD3-10 must be defined in some way so that it can be determined what parameters that shall be written, and also so that the data transferred from the inverter can be connected with the correct parameter.
Parameter 915 and 916 are used to determine what parameters that shall be written (915) and read (916) cyclically (parameter number as specified below, for examples of how to assign these refer to chapter 5.4.2 and 5.4.3).
Assignment of PZD write word 3-10 (PLC -> Inverter) with parameter 915:
915, sub-index 1 = Parameter number for parameter transferred in PZD3 915, sub-index 2 = Parameter number for parameter transferred in PZD4 915, sub-index 3 = Parameter number for parameter transferred in PZD5 915, sub-index 4 = Parameter number for parameter transferred in PZD6 915, sub-index 5 = Parameter number for parameter transferred in PZD7 915, sub-index 6 = Parameter number for parameter transferred in PZD8 915, sub-index 7 = Parameter number for parameter transferred in PZD9 915, sub-index 8 = Parameter number for parameter transferred in PZD10
Assignment of PZD read word 3-10 (Inverter ->PLC) with parameter 916:
916, sub-index 1 = Parameter number for parameter transferred in PZD3 916, sub-index 2 = Parameter number for parameter transferred in PZD4 916, sub-index 3 = Parameter number for parameter transferred in PZD5 916, sub-index 4 = Parameter number for parameter transferred in PZD6 916, sub-index 5 = Parameter number for parameter transferred in PZD7 916, sub-index 6 = Parameter number for parameter transferred in PZD8 916, sub-index 7 = Parameter number for parameter transferred in PZD9 916, sub-index 8 = Parameter number for parameter transferred in PZD10
Please Note:
1.PZD words 3-6 are enabled if PPO 2 or 4 is selected. PZD words 3-10 are enabled with PPO5.
2.Parameter numbers are within the range 1-418. See chapter 5 for an index of the inverter parameter numbers. If a parameter number is set to 0, the actual PZD word will be ignored.
3.Only parameters that are of size two bytes or less can be assigned as PZD objects.
