Pixsys CNV510-PBUS-RTU-A, User Manual

Page: 19 / 32

pag. 19
Serial Write
    PROFIBUS OUT
The means of the fields are:
In the field “ Slave ID ” the address of the Modbus device that you must write is defined;
In the field “ Type ” insert the data type of the Register you would like to write. You can choose between “Coil Status” and “Holding Register”.
In the field “ Address ” the start address of the register to be written is defined;
In the field “ NPoint ” insert the number of consecutive registers to be written;
In the field “ Poll Time ” insert the cyclic time to make this request;
If the field “ On Change ” is checked, the Modbus writing request is made only if PROFIBUS data are changed; otherwise it is sent cyclically, using the “Poll Time”;
In the field “ Max Error ” the number of consecutive errors that the Master waits before discarding the row from the cycle of requests is defined;
In the field “ Position ” the address for the PROFIBUS array is defined;
The field “ Start Bit ” is used for the “Coil Status” and it allows to select which bit of the selected Position using;
If the field “ SWAP ” is checked, the data written is swapped
In the field “ Mnemonic ” the description for the request is defined.
Figure 7: “Set Modbus Access / Modbus Write --> PROFIBUS Out” window