2 ctt2: write parameter value, Ctt2: write parameter value, Parameter data transfer – Lenze E84DGFCA User Manual
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Lenze · Decentralised frequency inverter 8400 motec (AS-Interface option) · EDS84DMOTASI EN 4.0 - 09/2013
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Parameter data transfer
CTT2: Write parameter value
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9.2
CTT2: Write parameter value
• Acyclic write request from master to slave:
• Response from slave to master is OK:
• Response from slave to master has failed:
Byte
Contents / value
0
CTT2: Code
• Index 0x13 (19): Acyclic write request
1
CTT2: Index
• Index 0x18 (24): Write parameter value
2
CTT2: Number of bytes
• 0x8 (8)
3
Index high
byte
Index = 0x5FFF (code to be written)
4
Index low
byte
5
Subindex
6
Data type / number of bytes
Bit 7 = 0
Number (4 data bytes):
• Bits 0 ... 2 = Number of valid bytes
(1 = 1 byte, 2 = 2 bytes, 3 = 3 bytes, 4 = 4 bytes)
Bit 7 must be "0". Writing the string is not supported.
7
Data byte 1 (MSB)
8
Data byte 2
9
Data byte 3
10
Data byte 4 (LSB)
Byte
Contents / value
0
CTT2: Code
• Index 0x53 (83): Acyclic write request is OK.
• Parameter value was written.
Byte
Contents / value
0
CTT2: Code
• Index 0x93 (147): Acyclic write request is not OK.
1
CTT2: Standard error code
CTT2: Standard error codes ( 51)
2
Error code (MSB)
3
Error code
4
Error code
5
Error code (LSB)