Lenze 8400 motec - CTT2: Block Parameter Transfer; Read Mode

Parameter data transfer
CTT2: Block parameter transfer
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Lenze · Decentralised frequency inverter 8400 motec (AS-Interface option) · EDS84DMOTASI EN 4.0 - 09/2013
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9.5 CTT2: Block parameter transfer
In the case of the CTT2 block parameter transfer, parameter sets with a fixed length of 64 bytes are
transmitted.
9.5.1 Read mode
• Acyclic read request from the master to the slave:
• Response from slave to master is OK:
 Note!
In order to guarantee that a fixed data length of 64 bytes is transmitted, all the
parameters are transmitted as 32-bit values (16 x 32-bit parameters).
If required, the data lengths or formats of the parameters must be adjusted accordingly.
Parameter data smaller than 32 bits are not extended to 32 bits.
Byte Contents / value
0 CTT2: Code
•Index 0x12 (18): Acyclic read request
1 CTT2: Index
•Index 0x20 (32): Read parameter
2 CTT2: Number of bytes
• Value depends on the master.
Byte Contents / value
0 CTT2: Code
•Index 0x52 (82): Acyclic read request is OK.
• All the parameters were read.
1 Reserved
2 Reserved
3 Reserved
4 ... 7 Double word 1
• Value of the parameter in code C13214/1
... ...
64 ... 67 Double word 16
• Value of the parameter in code C13214/16