ADF Web HD67812-KNX-232-B2, Руководство пользователя

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User Manual Modbus Master / KNX
Document code: MN67812_ENG Revision 1.002 Pagina 21 di 28
SET ACCESS:
By pressing the “
Set Access ” button from the main window for SW67812 (Fig. 2) the window “Set Access” appears.
This window is divided in two parts, the "Modbus Read" (Fig. 6) and the "Modbus Write " (Fig. 7).
The first part "Modbus Read" is used to read the data from the Modbus slaves, and make them available on KNX network.
The second part "Modbus Write " is used to write the data that arrives from the KNX system into the Modbus slaves.
M
ODBUS
R
EAD
The means of the fields are:
If the field “ Enable ” is checked, the Modbus
Request is enabled;
In the field “ Slave ID ” the address of the
Modbus device you have to read is defined;
In the field “ Type ” insert the data type of the
register you would like to read. You can
choose between the following:
o
Coil Status;
o
Input Status;
o
Holding Register;
o
Input Register.
In the field “ Address ” the start address of the register to be read is defined;
In the field “ NPoint ” insert the number of consecutive registers to be read;
In the field “ Poll Time ” insert the time to make this request;
In the field “ Max Error ” is the number of errors continues that the gateway waits before suspending the poll until the next reboot. If
is set to zero this function is disabled;
In the field “ Position ” insert the address of the internal array where placing the information;
In the field “ Start Bit ” insert the start bit of the first byte of the field “Position” where start to insert the data read. Valid only for the
“Coil Status” and “Input Status”;
If the field “ Swap ” is checked, the data of the Modbus registers are swapped;
In the field “ Mnemonic ” the description for the request is defined.
Figure 6: “Set Access --> Modbus Read” window