INFICON SKY CDGxxxD (Profibus) - Manual (Page 31)

tira54e1-a (2009-01) CDGxxxD.cp
31
Instance 2 of the Analog Sensor Input Function Blocks describes the functionality
of the Atmosphere Pressure Sensor (ATM) measuring part of the gauge.
The following attributes are supported:
ID Name Structure Data type Bytes Access Store See section
15 AIBlockAdjust Command Record UINT8 2 1_R/W
2_R/W
N 8.2.12
16 Block Type ID Simple OSTRING(n) 4 1_R
2_R N 8.2.1
19 ProcessValue (PV) Simple *) - 0_XI
1_R
2_R
D 8.2.2
20 Status Simple UINT8 1 0_XI
1_R
2_R
D 8.2.3
21 Data Type Simple UINT8 1 2_R/W N 8.2.4
22 Data Unit Simple UINT16 2 2_R/W N 8.2.5
23 Reading Valid Simple Boolean 1 1_R
2_R
D 8.2.6
24 Full Scale Simple **) - 1_R
2_R
N 8.2.7
39 Safe State Simple **) 1 1_R/W
2_R/W
N 8.2.8
40 Safe Value Simple **) - 1_R/W
2_R/W
N 8.2.9
44 Overrange Simple **) - 1_R
2_R
N 8.2.10
45 Underrange Simple **) - 1_R
2_R
N 8.2.11
*) According to parameter data type
**) According to data type value (ID 21)
The Block Type ID Parameter contains an ID which describes the block type. The
block type ID of the "Sensor Analog Input Function Block" is set to "2". The other
defined block types are listed in Appendix B.
The process value contains the measurement value of the Atmosphere Pressure
Sensor (ATM), transformed on the basis of the chosen data unit. If the device is not
in state EXECUTING (ID 25, Device Block), the Process value is set to the value
specified by the Safe State (ID 39). This could be the Safe Value, Last Value, Full
Scale, Zero, device specific, or vendor specific.
The atmosphere pressure sensor cannot trigger alarms and warnings because the
atmosphere pressure changes are to small. Therefore the ATM sensor supports no
alarm/warning trip points and consequently this parameter is always set to "0".
8.2 Sensor Analog Input
Function Block
(Instance 2, ATM)
8.2.1 Block Type ID (ID 16)
8.2.2 Process Value (ID 19)
8.2.3 Status (ID 20)