Lenze ECSEM Series - Page 349

Appendix
Communication with MotionBus/system bus (CAN)
Parameter data transfer
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EDBCSXM064 EN 11.0
12.3.4.3 Examples of the parameter data telegram
Reading parameters
The heatsink temperature C0061 ( 43 °C) is to be read from the controller with node
address 5 via the parameter data channel 1.
ƒ Identifier calculation
Identifier from SDO1 to controller Calculation
1536 + node address 1536 + 5 = 1541
ƒ Command "Read Request" (request to read a parameter from the controller)
Command Value [hex]
Read request 0x40
ƒ Index calculation
Index Calculation
24575 − code number 24575 − 61 = 24514 = 0x5FC2
ƒ Subindex: 0
ƒ Telegram to controller
Identifier
User data
Command Index
LOW byte
Index
HIGH byte
Subindex Data 1 Data 2 Data 3 Data 4
1541 0x40 0xC2 0x5F 0x00 0x00 0x00 0x00 0x00
ƒ Telegram from controller
Identifier
User data
Command Index
LOW byte
Index
HIGH byte
Subindex Data 1 Data 2 Data 3 Data 4
1413 0x43 0xC2 0x5F 0x00 0xB0 0x8F 0x06 0x00
– Command:
"Read Response" (response to the read request) = 0x43
– Identifier:
SDO1 from controller (1408) + node address (5) = 1413
– Index of the read request:
0x5FC2
– Subindex:
0
– Data 1 ... 4:
0x00068FB0 = 430000  430000 : 10000 = 43 °C