Pixsys CNV510-PBUS-RTU-A, Руководство пользователя

Страница: 16 / 32

pag. 16
The means of the fields for “Modbus Master” are:
In the field “ Serial ” is possible to select the serial line used for Modbus. Please select “RS485”;
In the field “ Baudrate ” pease define the baudrate for the serial line;
In the field “ Parity ” pease select the parity of the serial line;
In the field “ Stop Bits ” pease select the Stop Bits of the RS485;
In the field “ TimeOut (ms) ” insert the maximum time that the converter attends for the answer from the
slave interrogated (1000mS is the default value);
In the field “ Cyclic Delay (ms) ” insert the delay between two requests (10mS is the default value);
If the field “ Enable Modbus ony if PROFIBUS is Active ” is checked, the converter do the Modbus
requests only if PROFIBUS connection is established; otherwise the requests are made also if PROFIBUS is
not operational. (disabled is is the default value);
The means of the fields for “PROFIBUS” are:
In the field " ID Device " insert the address of the PROFIBUS side;
In the field " Baudrate " the baudrate for the PROFIBUS is defined, please leave it as AUTO;
In the field " Number Byte IN " the number of byte from the slave PROFIBUS to the converter is defined;
In the field " Number Byte OUT " the number of byte from the converter to the slave PROFIBUS is defined.
If the field “ Enable Error/Diagnosis for Modbus Slaves ” is checked, the converter can advice a problem
with one or more devices in Modbus network. In the field on right is necessary to insert the start byte
address of array OUT where is saved the Diagnosis;
If the field “ Enable PROFIBUS Diagosis ” is checked, the converter use the Diagnosis to show an error of
one or more Modbus device. (The “Enable Error/Diagnosis for Modbus Slaves” must be selected for enable
this option);
If the field “ Enable Modbus Asynchronous Requests ” is checked, is possible to send a Modbus Request
using some bytes of the PROFIBUS to controll the requests;
In the field “ Start Address Byte IN ” the starting address where the gateway send to the PROFIBUS master
the state of Modbus request (for more info see the chapter “Async Remote Request”). Remember, there are
4 bytes of state of the modbus request;
In the field “ Start Address Byte OUT ” the starting address where the PROFIBUS master send to the
gateway the parameters of the Modbus Request (for more info see the chapter “Async Remote Request”).
Remember, there are 8 bytes of parameters for the modbus request.