Lenze I/O system 1000 System Manual - Manual (Page 279)

CANopen communication
Transmitting parameter data
Writing a parameter (example)
8
l
279 EDSIO1000 EN 7.0
8.4.2 Writing a parameter (example)
Task
An I/O system 1000 has been assigned node address 2. The function of the first channel
(voltage signal 0 ... +10 V, 0 ... 27648dec) 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
Formula Information
Identifier = Basic identifier + node address
= 1536 + 2 =1538 = 602
h
l Basic identifier for parameter channel 1 (output) =
1536
l Node address of the I/O system = 2
Instruction code = 23
h
l Write Request command (transmitting parameters to
the I/O system)
Index = I3100
h
l First channel of the analog module
Subindex = 1 l First analog module
Data 1
Data 2 ... 4 = 0F
h
= 00
h
l 0 ... 10 V, 0 ... 07648
dec
l No function
11 bits Eight bytes of user data
Identifier
Instructio
n code
Index
Subindex Data 1 Data 2 Data 3 Data 4
LOW byte HIGH byte
602
h
23
h
00
h
31
h
0F
h
00
h
00
h
00
h
00
h
(LSB) (MSB)
Read Request
Read Response
Identifier = 1538
Identifier = 1410
SLIO008
Fig. 8−10 Writing a parameter
Telegram from the I/O system (acknowledgement when being executed faultlessly)
Formula Information
Identifier = Basic identifier + node address
= 1408 + 2 = 1410 l Basic identifier for parameter channel 1 (input) = 1408
l Node address of the I/O system = 2
Instruction code = 60
h
l Command Write Response ’ (acknowledgement from
the I/O system)
Index = Index of the read request
Subindex = Subindex of the read request
Data 1 ... 4 = 0 l Acknowledgement only
11 bits Eight bytes of user data
Identifier
Instructio
n code
Index
Subindex Data 1 Data 2 Data 3 Data 4
LOW byte HIGH byte
1410 60
h
01
h
30
h
0 0 0 0 3