Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 - Manual (Page 215)

Publication 1758-UM002D-EN-P - October 2010
DataSite Flow Configuration Utility (DS FloConfig) 215
Unit register +0 = Primary Variable unit code, 8-bit unsigned integer
+1 = Secondary Variable unit code, 8-bit unsigned integer
+2 = Tertiary Variable unit code, 8-bit unsigned integer
+3 = Fourth Variable Unit code, 8-bit unsigned integer
HART state register +0 = state 0
+1 = state 1
Note Not all equipment return primary, secondary, tertiary and fourth
variables. If the equipment does not support them, zero is written
into the value and units unit code for that variable.
Command 15
Purpose Read Transmitter Variables
Send register Not used
Return register +0 = alarmselect code
+1 = transfer function code, 8-bit unsigned integer
+2 = P. V. range units code, 8-bit unsigned integer
+3, 4 = upper range value (float point)
+5, 6 = lower range value (float point)
+7, 8 = damping value (second) (float point)
+10 = private-label distributor code, 8-bit unsigned integer
Unit register Not used
HART state register +0 = state 0
+1 = state 1
Command 33
Purpose Read appointed transmitter variables
Send register +0 = variable 0 code, 8-bit unsigned integer
+1 = variable 1 code, 8-bit unsigned integer
+2 = variable 2 code, 8-bit unsigned integer
+3 = variable 3 code, 8-bit unsigned integer
Return register +0, 1 = Variable 0 value (float point)
+2, 3 = Variable 1 value (float point)
+4, 5 = Variable 2 value (float point)
+6, 7 = Variable 3 value (float point)
Unit register +0 = Variable 0 unit code, 8-bit unsigned integer
+1 = Variable 1 unit code, 8-bit unsigned integer
+2 = Variable 2 unit code, 8-bit unsigned integer
+3 = Variable 4 unit code, 8-bit unsigned integer
Description of HART commands (Continued)