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User Manual
BACnet Master / SNMP Agent
Document code: MN67726_ENG Revision 1.100 Page 24 of 42
Figure 4b: “Set BACnet Access
BACnet Write” window
The means of the fields in the window (Write) are the follows:
In the field “
IP Address / ID
” the IP address / ID of the slave that contains the data to be read is defined;
In the field “
Object Type
” the object to be read is defined;
In the field “
Data Type
” the type of data to write is defined;
In the field “
Instance
” the instance number of the object is defined;
In the field “
Property
” the property to be read is defined;
In the field “
Priority
” the priority of the BACnet request is defined;
In the field “
NByte
” the number of bytes reserved for saving the information on SNMP side is defined;
By checking the field “
En Dest
” it is possible to enable the Destination Network (D Net), Destination Length (D Len) and Destination
Address (D Adr). These informations are used for make a request to other segments of network (through a BACnet router);
In the field “
D Net
” the destination network (from 1 to 65535) is defined;
In the field “
D Len
” the length of “D Add” field (1 or 2 or 6) is defined;
In the field “
D Adr
” the address of the endpoint is defined. If “D Len” is ‘1’ it is possible to insert a number from 1 to 255; if “D Len”
is ‘2’ it is possible to insert a number from 1 to 65535; if “D Len” is ‘6’ it is possible to insert an IP and port in this format
“192.168.2.188:47808”;
By checking the field “
Change
” the BACnet write request is made only if SNMP data are changed; otherwise (if is selected the field
“
Timer
”) it is sent cyclically, using the “Poll Time”;
In the field “
Poll Time
” the frequency of the request is defined (in ms);