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5
CANopen communication
5.4
Transmitting parameter data
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Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17
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5.4.2
Writing a parameter (example)
Task
The I/O system 1000 has been assigned node address 2. The function of the first channel (voltage
signal 0 ... +10 V, 0 ... 27648) is to be output at the first analog I/O compound module (EPM-S500, 2
analog outputs 0 ... 10 V).
Telegram to the I/O system
[5-10] Write parameters
Formula
Info
Identifier
= Basic iden node address
= 1536 + 2 =1538 = 0x602
• Basic identifier for parameter channel 1
(output) = 1536
• Node address of the I/O system = 2
Command code
= 0x23
• Write "Request command (transmitting
parameters to the I/O system)
Index
= I-3100
• First channel of the analog module
Subindex
= 1
• First analog module
Data 1
Data 2 ... 4
= 0x0F
= 0x00
• 0 ... 10 V, 0 ... 07648dec
• Without function
11 Bit
8 bytes of user data
Identifier
Comman
d code
Index
Subindex
Data 1
Data 2
Data 3
Data 4
LOW byte
HIGH
byte
0x602
0x23
0x00
0x31
0x0F
0x00
(LSB)
0x00
0x00
0x00
(MSB)
Read Request
Read Response
Identifier = 1538
Identifier = 1410