KROHNE MFC 400 Profibus - Manual (Page 30)

4
COMMISSIONING / OPERATION
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MFC 400
www.krohne.com 06/2013 - 4002835301 - AD MFC 400 PROFIBUS R01 en
4.2.2 Output data
Output data is transferred from the master to the PROFIBUS device to control the totalizers.
Behaviour and coding is described by the following tables.
Module types (defined in GSD):
Coding of SetTot
Coding of ModeTot
Total cyclic transfer of the totalizer value with status to the master (no output data) (no output data) (no output data) (no output data)
SetTot + Total cyclic transfer of the totalizer value with status to the master +
cyclic control data from master to the slave via the parameter SetTot
ModeTot + Total cyclic transfer of the totalizer value with status to the master +
cyclic control data from master to the slave via the parameter ModeTot
SetTot +
ModeTot + Total
cyclic transfer of the totalizer value with status to the master +
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
SetTot + ModeTot cyclic control data from master to the slave via the parameters SetTot and ModeTot
(in this order)
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 4: Slot 4, Index 32; totalizer in slot 5: Slot 5, Index 32;
totalizer in slot 6: Slot 6, 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.
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.
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.