Lenze EPM-T110 - Transmitting Parameter Data; Telegram Structure

Transmitting parameter data
Telegram structure
10
Network via CANopen
10.5
10.5.1
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10.5-1
EDSPM-TXXX-3.0-04/2004
10.5 Transmitting parameter data
Parameter data are the so-called indices.
Parameters are usually set only once during the commissioning.
Parameter data are transmitted as so-called SDOs (
Service Data Objects )viathe
system bus and acknowledged by the receiver, i.e. the transmitter gets a feedback
if the transmission was successful.
10.5.1 Telegram structure
Structure of the telegram for parameter data:
11 bits 8 bytes of user data
I
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Index
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1
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2
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Identifie
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code
LOW byte HIGH byte
Subindex Data 1 Data 2 Data 3 Data 4
z The subchapters below explain the individual telegram components in detail.
z The chapter 10.5.2 contains an example of how to write a parameter.
(Q 10.5-4)
z
The chapter 10.5.3 contains an example of how to read a parameter.
(Q 10.5-5)
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Identifie
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LOW byte HIGH byte
Subindex Data 1 Data 2 Data 3 Data 4
Two parameter channels are available for parameter data transmission. They are
addressed via the identifier.
Identifier =
Basic identifier
+ node address of the device
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=
dec hex
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SDOs Parameter channel 1
S
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Output (transmit) 1408 580
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Input (receive) 1536 600
+ value set with coding switch
Parameter channel 2
Output (transmit) 1600 640
+
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Input (receive) 1472 5C0
+valuese
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hcodingswi
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ch


 Note!
There is an offset of 64 between the identifiers for parameter
channels 1 and 2:
z Output of parameter channel 1 = 1536
z Output of parameter channel 2 = 1536 + 64 = 1600
Identifier
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