COMMISSIONING / OPERATION
3
19
VFC 200
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06/2019 - 4005059401 - AD VFC200 PB-PA R01 en
3.2.2 Output data
Output data is transferred from the master to the PROFIBUS device to control the totalizers and
to transmit measuring values to the PROFIBUS device. Behaviour and coding is described by the
following tables.
Total
cyclic transfer of the totalizer value with status to the master (no output data)
(no output data)
(no output data)
(no output data)
Total
cyclic transfer of the totalizer value with status to the
cyclic control data from master to the slave via the parameter SetTot
M Total
cyclic transfer of the totalizer value with status to the
cyclic control data from master to the slave via the parameter ModeTot
M Total
cyclic transfer of the totalizer value with status to the
cyclic control data from master to the slave via the parameters SetTot and ModeTot
(in this order)
SetTot
cyclic control data from master to the slave via the parameter SetTot
ModeTot
cyclic control data from master to the slave via the parameter ModeTot
ModeTot
cyclic control data from master to the slave via the parameters SetTot and ModeTot
(in this order)
Table 3-12: Module types (defined in GSD)
SetTot = 0
Totalizer is totalizing
SetTot = 1
Totalizer is reset to 0.0 and remains at this value until SetTot is reset to 0. If the
value of SetTot changes from "1" to "0" the totalizer starts counting from 0.0.
SetTot = 2
Totalizer is set to the value defined by PresetTot. PresetTot can be written via an
acyclic service (totalizer in slot 3: Slot 3, Index 32; totalizer in slot 4: Slot 4, Index
32). If the value of SetTot changes from "2" to "0" the totalizer starts counting from
the current value defined by PresetTot.
Other values are not accepted for SetTot. Values are ignored; totalizer remains in its last valid setting.
Table 3-13: Coding of SetTot
ModeTot = 0
True arithmetic integration of the incoming rate values.
ModeTot = 1
Totalization of positive incoming rate values only.
ModeTot = 2
Totalization of negative incoming rate values only.
ModeTot = 3
Totalizer is stopped, no totalization is done.
ModeTot = 248
All incoming rates will be handled as positive values; i.e. negative input values will
be multiplied with "-1.0".
ModeTot = 249
All incoming rates will be handled as negative values; i.e. positive input values will
be multiplied with "-1.0".
Other values are not accepted for ModeTot. Values are ignored; totalizer remains in its last valid setting.
Table 3-14: Coding of ModeTot
INFORMATION!
Take care that SetTot and ModeTot are level sensitive parameters; e.g. if SetTot is changed from
"0" to "1" the totalizer is reset and stopped. It will not start counting before SetTot is reset to "0"
via the control system or an engineering tool. It is not reset by the PROFIBUS device.
