2 writing a parameter (example), Writing a parameter (example), Network via canopen – Lenze EPM−T9XX Modular system User Manual
Page 234
Transmitting parameter data
Writing a parameter (example)
Network via CANopen
9.4
9.4.2
L
9.4−4
EDSPM−TXXX−9.0−11/2009
9.4.2
Writing a parameter (example)
An I/O system IP20 has the node address 2. For the first analog module (4×analog
output), the function of the output A.0 (voltage signal 0 ... +10 V, 12 bits) is to be
shown.
Formula
Information
Identifier
= Basic identifier + node address
= 1536 + 2 =1538 = 602
h
·
Basic identifier for parameter channel 1 (output) = 1536
·
Node address of the I/O system IP20 = 2
Instruction
code:
= 23
h
·
Command Write Request" (transmitting parameters to
the I/O system IP20)
Index
= I3001
h
·
Index first analog module
Subindex
= 1
·
Subindex = 1 (function for output A.1 among others)
Data 1
Data 2
Data 3
Data 4
Data 1 ... 4
= 00
h
= 00
h
= 05
h
= 3B
h
= 00 00 05 3B
h
·
Diagnostics (Lenze setting)
·
Reserved
·
Output A.0 (voltage signal 0 ... +10 V, 12 bits)
·
Output A.1 (Lenze setting)
11 Bit
8 bytes of user data
Identifier
Instruction
code:
Index
Subindex
Data 1
Data 2
Data 3
Data 4
LOW byte HIGH byte
602
h
23
h
01
h
30
h
1
00
h
00
h
05
h
3Bh
(LSB)
(MSB)
L
0
1
L
Write Request
Write Response
Identifier = 1538
Identifier = 1410
epm−t118
Fig. 9.4−1
Writing a parameter
Formula
Information
Identifier
= Basic identifier + node address
= 1408 + 2
= 1410
·
Basic identifier for parameter channel 1 (input) = 1408
·
Node address of the I/O system IP20 = 2
Instruction
code:
= 60
h
·
Command Write Response" (acknowledgement from the
I/O system IP20)
Index
= Index of the read request
Subindex
= Subindex of the read request
Data 1 ... 4
= 0
·
Acknowledgement only
11 Bit
8 bytes of user data
Identifier
Instruction
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
Task
Telegram to the I/O system IP20
Telegram from the I/O
system IP20 (acknowledgement
when being executed faultlessly)