Chapter 7 Second Development PlatformVP3000
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7-3 The Setting of Initialization
1. The default communication format of PLC is 7, N, 2, 9600, and station number is 2. You can
change this station number in Pr.L0-00, but the address cannot be the same as Pr.N1-01 of AC
motor drive.
2. VP3000 provides two communication ports for upload / download PLC programs, see the figure
below. The communication format of Channel 1 is fixed in 19200, 8, N, and 2 RTU.
3. A master device can store data in AC motor drive and inner PLC at the same time. The method
of execution is by the recognitions the station numbers, for example, if the station number of the
AC motor drive is 1, and the station number of inner PLC is 2, then the commands from the
master device are:
01 (station no.) 03 (read) 0001 (address) 0001 (one data item), this is to read the data of
Pr.A0-01 in AC motor drive.
02 (station no.) 03 (read) 1000 (address) 0001 (one data item), this is to read the data of D0
in inner PLC.
4. When uploading / downloading programs, the PLC programs stop working.
5. Noted that using WPR instruction to write parameters, the value can be changed less than 10
9
times or a memory write error will occur. The calculation of write times is based on the written
value whether is being changed or not. If the written value left unchanged, the changed times
won’t increase in the next parameter operation; if the written value differs from the last time, then
the changed times increase by one.
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