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User Manual DALI / Modbus Master - Converter
Document code: MN67842_ENG Revision 1.000 Pagina 20 di 43
The window is divided in two parts, the “
Modbus Read ” that contains the Modbus registers/status readable by the converter and “ Modbus
Write ” that contains the Modbus registers/status writeable by the converter.
The meaning of the fields in the window are the follows:
If the field “ Enable ” is checked, the Modbus request is enabled;
In the field “ Slave ID ” the address of the Modbus device to read/write is defined;
In the field “ Type ” the data type of the Register to read/write is defined. It is possible to choose between the following:
o
Coil Status;
o
Input Status (only readable);
o
Holding Register;
o
Input Register (only readable).
In the field “ Address ” the starting address of the register/status to read/write is defined;
In the field “ NPoint ” the number of consecutive registers/status to read/write is defined;
In the field “ Poll Time ” the time (expressed in milliseconds) used to read/write the register/status is defined. If ‘0’, the request isn’t
sent;
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 position (byte) where taking/saving the data from/to the internal arrays of the converter is defined;
The field “ Start Bit ” allows to select which bit of the selected Position using;
If the field “ Swap ” is checked, the bytes of the value read/written are exchanged between them;
In the field “ Mnemonic ” a description of the data inserted in the row is defined.