Wika D-21-9 Manual de usuario Pagina 36

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D-20-9 / D-21-9 GB
WIKA Additional Instructions Pressure Transmitter with CANopen Interface D-20-9 / D-21-9 36
Example 1:
Pressure Range: -1 … 2.5 bar (=> -100,000 … 250,000 Pa output value)
Calibration Point 1:
Pressure applied (reference value): -0.9 bar
The user writes the value that the device is supposed to indicate under the pressure currently applied to object
6121h subindex 1 (AI_Input_Scaling_1_PV), i.e. in this example -90,000 Pa (=> FF FE A0 70 h)
ID DLC Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7
21h 61h 70h A0h FEh FFh
600h
+
Node-ID
8
CS =
22h
Index 6121h
01h
Subindex
desired value (as integer32)
The pressure transmitter confirms the successful service by:
ID DLC Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7
21h 61h
580h
+
Node-ID
8
CS =
60h
Index 6121h
01h
Subindex
00h 00h 00h 00h
Calibration Point 2:
Pressure applied (reference value): 2.5 bar
The user writes the value that the device is supposed to indicate under the pressure currently applied to object
6123h subindex 1 (AI_Input_Scaling_2_PV), i.e. in this example 250,000 Pa (=> 00 03 D0 90 h)
ID DLC Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7
23h 61h 90h D0h 03h 00h
600h
+
Node-ID
8
CS =
22h
Index 6121h
01h
Subindex
desired value (as integer32)
The pressure transmitter confirms the successful service by:
ID DLC Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7
23h 61h
580h
+
Node-ID
8
CS =
60h
Index 6121h
01h
Subindex
00h 00h 00h 00h
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