8 user parameter data 3.9 types of communication – INFICON SKY CDGxxxD (Profibus) User Manual
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tira54e1-a (2009-01) CDGxxxD.cp
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Depending on the pressure unit setting (≙ data unit), the following configuration
string has to be transmitted to the gauge (parameter data in hexadecimal format):
Data string (hex)
Pressure unit
00 00 00 10 01
COUNTS
00 00 00 13 01
Torr
00 00 00 13 08
mbar
00 00 00 13 09
Pascal
CDGxxxD works according to the Profibus DPV1 specification and can be
addressed in cyclic or acyclic data traffic (
→ [4]).
Acyclic data traffic should be used to make device or process specific settings such
as definition of the Safe Values, Safe States etc. or for reading or writing of rarely
used attributes.
Cyclic data traffic is used for continuous exchange of the required process para-
meter values, i.e. pressure value and status indications. A number of standard
telegrams are available for cyclic data traffic. They can be selected according to
requirements (
→ section "Cyclic Message Telegrams").
3.8 User Parameter Data
3.9 Types of
Communication