Filter
Top Products
6.5.4 Transmitter Device Status Registers
The following are the values for the Device Status holding registers. These registers are
bit field registers represented as a 32-bit floating point values for Transmitters.
Value Transmitter Device Status
1 Transmitter Online
2 Low Battery Condition
► 4 Alarm Condition (WN571 only)
8 Sensor Error Condition
16 Sensor Overrange Condition
32 System Error Condition
64 Switch Input 1 Closed
128 Switch Input 2 Closed
► 256
Sq. Root Funct. (Diff. Pressure only - see
below)
Again, like Section 6.4.3, the status can be resolved by subtracting the largest number
listed above from the value received from the holding register, and then subtracting the
next highest and so on until the result is 0. Each of the values used indicate the
respective condition listed above.
For example, the holding register reads 9, then subtract 8 and get 1. Then subtract 1
from 1 and get 0. Thus from the list above, we have a Sensor Error Condition and the
Transmitter is online.
6.6 Square Root Function
The Square Root Function only works with the Differential Pressure Transmitter. When
the DP Transmitter is in Orifice mode, a Square Root calculation is performed. You have
the option to display the Square Root Calculation. If this option is enabled, it will be
displayed as Percent Square Root in WMT and sent to a Modbus Register.
The Square Root Calculation must be enabled through WMT. To display the Square Root
Calculation, first open the Configuration dialog box for the DP Transmitter and select the
Operation Mode tab. Make sure you have selected Orifice Flow from the mode menu.
Then, from the Flow Units drop-down list, select Percent - Vol Flow. If the Density check
box is selected, then Percent - Mass Flow can also be selected from the Flow Units
drop-down list to show the Square Root Calculation.
33