GE D485, Instruction Manual

Page: 89 / 96

APPLICATION EXAMPLE
D485 MODBUS TO DEVICENET CONVERTER – USER GUIDE 9–17
PARAMETER DATA INPUT
AREA MAPPING
The explicit data can be further assigned to different attributes of parameter data input
mapping object B0h. Define the following four attributes out of eight bytes of explicit data.
This can be done by using I/O data input area mapping mailbox command (04h)
1.
Right click on the EndInit item and insert a new mailbox.
2. Set the command code to 04 (row 3).
3. The offset and length of attribute must be provided for each of the four attributes.
Enter 16 in the Data size field - it will automatically convert and display as 0x0010.
Figure 9-28: Offset and data length for parameter data input mapping attributes
4. The offset and data length for each attribute in bytes in given below.
5. Enter the offset and data length values from the table above, then select the File >
Apply Changes menu item to save the changes.
Attribute Bytes Assignment
Attribute 1 2 bytes Switch input status
Attribute 2 2 bytes Motor load
Attribute 3 2 bytes Thermal capacity
Attribute 4 2 bytes Voltage
Attribute Offset Data length
1 0x0000 0x0002
2 0x0002 0x0002
3 0x0004 0x0002
4 0x0006 0x0002