Vacon optea - Page 129

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8
8.4.8.5 Changing the value of drive parameter ID 103 (unsuccessful)
This example shows behaviour in case where ID modification fails. PLC writes request to change ID
103 value to 0d (Acceleration Time = 0.0s, not allowed)
The following table contains messages sent during unsuccessful writing value to ID 103.
Answer indicates an unsuccessful operation with error "Low or high limit exceeded".
8.4.8.6
Changing multiple parameter values (ID 103 and ID 104)
The following information is used for this request:
Table 96. Request to write the value of parameter ID 103
Field Contents
Request reference 0x05
Request ID 0x02 = Write parameter
Axis Number 0x01
No. of Parameters 0x01
Attribute 0x10 = Value
No. of elements 0x01
Parameter Number 0x2711 (10001d)
Subindex 0x0067 (103d)
Parameter datatype 0x42 = WORD
Number of parameters 0x01
Value: HI byte 0x00
Value: LOW byte 0x00
Table 97. Messages sent and received during unsuccessful writing value to ID 103
Message Operation Data
1 Write request
Request header 0x05 0x02 0x01 0x01
Parameter address 0x10 0x01 0x27 0x11 0x00 0x67
Parameter value 0x42 0x01 0x00 0x00
2 Write request response from AC drive to PLC
- PLC waits until AC drive has finished processing the requested operation
3PLC sends read request
4
Read request
response
Response header 0x05 0x82 0x01 0x01
Parameter value 0x44 0x01 0x00 0x02
Table 98. Request to write the value of parameter ID 103 and ID 104
Field Contents
Request reference 0x06
Request ID 0x02 = Write parameter
Axis Number 0x01
No. of Parameters 0x02 (two parameters, ID 103 and ID104)