System bus (can) for lenze plc devices, General information – Lenze DDS System bus CAN for PLC User Manual
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System bus (CAN) for Lenze PLC devices
General information
2−18
l
PLC−Systembus EN 2.0
Telegram from the controller (value of the parameter requested)
Formula
Information
Identifier
= basic identifier + node address
= 1408 + 5
= 1413
·
Basic identifier for parameter data channel 1 (input) = 1408
·
Node address of the controller = 5
Command code = 43
hex
·
"Read Response" command (response to the read request with the
current value)
Index
= index of the read request
Subindex
= subindex of the read request
Data 1 ... 4
= 43 x 10000
= 430000
= 00 06 8F B0
hex
·
Assumption: The current heatsink temperature of the controller is 43 ºC,
therefore the value of the parameter to be read is 43
·
Fixed32 data format (4 fixed decimal positions); multiply value by 10000
11bit
8 bytes user data
Identifier
Command
code
Index
Subindex
Data 1
Data 2
Data 3
Data 4
Low byte
High byte
1413
43
hex
C2
hex
5F
hex
0
B0hex
8Fhex
06
hex
00
hex
(LSB)
(MSB)