Endress+Hauser Proline Prosonic Flow 93 - Page 104

6 Commissioning PROline Prosonic Flow 93 PROFIBUS-DP/-PA
104 Endress+Hauser
Example of SET_TOT and MODE_TOT:
If the control variable SET_TOT is set to “1” (1 = Reset the totalizer) the value of the
totalizer will be set to “0”. The value of the totalizer will now be added up starting from
“0”.
If the totalizer is to retain the value “0”, it will be necessary to set the control variable
MODE_TOT to “3” (3 = STOP totalizing). The totalizer will now stop adding up. The
control variable SET_TOT can be set to “1” at a later point in time (1 = Reset the
totalizer).
Output data display value
The display value allows you to transmit a measured value, calculated in the automation
system, directly to Prosonic Flow 93. This measured value is a display value which can
be assigned to the main line, the secondary line and the info line of the local display.
The display value comprises 4 bytes measured value and 1 byte status. The status is
displayed as being OK, uncertain or bad (see Page 58 ff.).
Data transfer from the automation system to Prosonic Flow 93 (display value)
!
Note!
The status can be entered manually and is interpreted in accordance with the status
coding in Profile Specification 3.0.
Example:
The concentration can be calculated in % f
(temperature/density)
in an automation system.
The temperature and density status is transmitted with the two cyclic measured values
and can therefore be shown directly on the display together with the calculated
concentration.
Output
byte
Process parameter Access
type
Comment/Data format Factory
setting
unit
6, 7, 8, 9 Display value write
32-bit floating point number
(IEEE-754)
Illustrated
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10 Display value status write – –