Rosemount 3095FB - Defining Scaled Integers

Model 3095FB Multivariable Transmitter with Modbus Protocol
Modbus Protocol Guide
Page 35 of 79
5.3.1 Defining Scaled Integers
There are two separate ways to configure the Scaled Integers. The next two sections describe
the two methods. A holding register is provided to allow the user to choose which of the fol-
lowing methods is used to configure the Scaled Integers. Only the registers needed for that
method will be enabled. The Modbus error ILLEGAL DATA VALUE will be returned if an
attempt is made to write to a disabled register. See for implementation examples.
If the Scaled Integers are disabled, all the Scaled Integers will be set to 65535.
Table 5-4 Process Variable Scaled Integers
Modbus Access
DESCRIPTION
Address
Address
Type
Attributes
Functional
Area
Data / Control
0116 Input reg-
ister
RO PV Scaled
Integers
DP
0117 Input reg-
ister
RO SP
0118 Input reg-
ister
RO PT
*Attributes: R/W = Read/Write, RO = Read Only, WP = Write Protected
**These registers are available at multiple Modbus addresses (see Section 2.3located in
the Modbus Protocol Guide)
Table 5-5 Scaled Integer Method
Modbus Access
DESCRIPTION
Address
Address
Type
Attributes
Functional
Area
Data / Control
0204 Holding
Register
R/W, WP Scaled Integer Method
0 = Disable Scaled Integers
(default)
1= Method 1
2= Method 2
*Attributes: R/W = Read/Write, RO = Read Only, WP = Write Protected
**These registers are available at multiple Modbus addresses (see Section 2.3)