Rosemount 3095FB - Page 110

Model 3095FB Multivariable Transmitter with Modbus Protocol
Modbus Protocol Guide
Page 79 of 79
Example 2: Configure DP for 0 to 100 inches of water at 60 F with a scaled
integer range of 0 to 10,000
Method 1:
1. Configure the Scaled Integer Method for Method 1
2. Write a 0 to register DP_y1 (see Table 5-7)
3. Write a 10,000 to register DP_y2 (see Table 5-7)
4. Write a 0 to register DP_x1 (see Table 5-8)
5. Write a 100 to register DP_x2 (see Table 5-8)
Method 2:
1. Configure the Scaled Integer Method for Method 2
2. The Scale Factor = (y
2
- y
1
)/(x
2
- x
1
) = (10,000 - 0) / (100 - 0) = 100
3. The Offset = (Scale Factor * x
1
) - y
1
+ 32768 = (100 * 0) - 0 +32768 = 32768
4. Write a 10,000 to register Maximum Integer (see Table 5-9)
5. Write a 100 to register DP Scale Factor (see Table 5-10)
6. Write a 32,768 to register DP Offset (see Table 5-10)