MODBUS RTU Mode communication driver is the driver to communicate with RTU mode of MODBUS protocol.
<Figure 1> is read setting example of MODBUS RTU Mode communication driver.
|
|
| <Figure 1> Read setting example of MODBUS RTU Mode communication driver |
Device part of <Figure 1> input Com Port(COM1), Baud Rate(19200), Parity Bit(0), Data Bit(8), Stop Bit(1) respectively, according to setting of Master system.
In protocol option part, you can set the following: Slave station number(0 ~ 255, default = 0), weather to Float data the sending Tag value(0 : word, 1 = float, default = 0), weather to Float data the received value from master(0 : word, 1 : float, default = 0), version of SCADA Server( 0 : 8.xx, 1 : 9.xx or higher, default = 0), Modbus start address of sending data(0 ~ 65535, default = 0), weather to use IP protocol(0 = don't use, 1 = use, default = 0), weather to use Coil/Input memory(0 = don't use, 1 = use, default = 0), Modbus start address of sending data when using Coil/Input memory(0 ~ 65535, default = 0). Each argument is a comma-delimited.
MODBUS RTU Mode communication driver read schedule
Read schedule of MODBUS RTU Mode input only 'Read,' one line.
MODBUS RTU Mode communication driver send Tag data of SCADA Server. So, you have to set Tag name and number of order.
If you click the icon 
in protocol option part at
<Figure 1>, you can see the dialog box such as <Figure 2>.
 |
| <Figure 2> Example of MODBUS RTU Mode communication driver’s Option dialog box |
you
can set Tag name and number of order by using
,
,
button and listbox of <Figure
2>.
Also, you can set Slave station number, weather to Float data the sending Tag value, weather to Float data the received value from master, version of SCADA Server, Modbus start address of sending data by using the part of 'Protoocol Option' shown in <Figure 2>.
Note) The readed data from master save from 'Modbus start address of sending data' WORD, FLOAT memory.
Note) Tag name of SCADA Server also can set such as follows.
1) tag input filename : work folder\SCAN\READTAG???.txt and work folder\SCAN\READTAG_COIL??? ( ??? = port number, not COM port )
2) input tag name of SCADA Server by using text editor.
3) input at one line for one tag data.
4) input the order of 'order number', 'tag name', 'description(can be omitted)' separated by commas. ( maximum tag count = 10000 )
MODBUS RTU Mode communication driver don't support 'write settings'.