Emerson 1410 - Register Mapping

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Reference Manual
00809-0200-4410, Rev BC
Host Integration
July 2017
Host Integration
Floating point representation: This setting determines if the Gateway uses floating point values or
integer values. There are three options for this setting.
 Float: This option uses 32-bit floating point values.
 Round: This option rounds the data value to the nearest whole number.
 Scaled: This option uses scaled integers to offset negative values or increase decimal point resolution.
The equation for scaled integers is:
y = Ax – (B – 32768)
Where:
y = Scaled integer returned by the Gateway
A = Gain for scaled integer value
x = Measured value from wireless field device
B = Offset for scaled integer value
Use swapped floating point format?: This setting switches which register is sent first for a floating
point value. This setting is only used for floating point values.
Incorporate value’s associated status as error?: This setting will cause the Gateway to report a
predetermined value when a communications or critical diagnostic error is received from the wireless
field device. The value is user configurable depending on which floating point representation is chosen.
See Value reported for error below.
Value reported for error (floating point): This setting determines what value is reported if the wireless
field device reports a failure or stops communicating to the Gateway. This setting is used for floating
point values. The choices are NaN (not a number), +Inf (positive infinity), -Inf (negative infinity), or Other
(user specified).
Value reported for error (rounded and native integer): This setting determines what value is reported
if the wireless field device reports a failure or stops communicating to the Gateway. This setting is used
for rounded or scaled integers. The choice is a user specified value between -32768 and 65535.
Scaled floating point maximum integer value: This determines the maximum integer value for the
purpose scaling integers. 999-65534
Use global scale gain and offset?: This setting determines if a global gain and offset is applied for scaled
integers or if each value has a unique gain and offset. Unique gain and offsets are found on the Modbus
Mapping page.
Global scale gain: This value is multiplied to the data values for the purpose of scaling integers. If global
scaling is not selected, a gain value will be available for each separate data value on the Modbus Mapping
page.
Global scale offset: This value is added to the data values for the purpose of scaling integers. If global
scaling is not selected, an offset value will be available for each separate data value on the Modbus
Mapping page.
5.4.2 Register mapping
Register Mapping is the process of assigning data points from wireless field devices to Modbus registers.
These registers can then be read by a Modbus master or client. Modbus register mapping can be found
by navigating to System Settings>Protocols>Modbus.