Lenze DDS System bus CAN for PLC - Manual (Page 29)

System bus (CAN) for Lenze PLC devices
General information
2−17
l
PLC−Systembus EN 2.0
2.7.3 Reading a parameter (example)
Task
The heatsink temperature (C0061) of the controller with the node address 5 is to be read via the
parameter data channel 1.
Telegram to the controller
Formula Information
Identifier = basic identifier + node address
= 1536 + 5
= 1541
·
Basic identifier for parameter data channel 1 (output) = 1536
·
Node address of the controller = 5
Command code = 40
hex
·
Command "Read Request" (request to read a parameter from the
controller)
Index = 24575 − number of the Lenze code
= 24575 − 61
= 24514
= 5F C2
hex
·
Code = C0061 (heatsink temperature)
Subindex = 0
·
Subcode = 0 (no subcode)
Data 1 ... 4 = 0
·
Read request only
11bit 8 bytes user data
Identifier
Command
code
Index
Subindex Data 1 Data 2 Data 3 Data 4
Low byte High byte
1541 40
hex
C2
hex
5F
hex
0 0 0 0 0
Identifier = 1541
L
Identifier = 1413
Read Request
(C0061 = ???)
Read Response
(C0061 = 43 ºC)
SDO 1 / Node-ID 5
Fig. 2−6 Reading parameters