SEW-Eurodrive MOVIGEAR DAC B, Operating Instructions Manual

Page: 164 / 258

164
Operating Instructions – MOVIGEAR® DAC-B
9
Transmitting individual parameters via AS-Interface
Communication with AS-Interface Double Slave GLK31A
Setting the fixed
setpoint n0 Set the fixed setpoint n0 (parameter 8489.0 ) to 1000 rpm.
"Exchange request" service:
When the GLK31A double slave receives the service "Exchange request" 0x1D, it sends
the MOVILINK
®
protocol to the MOVIGEAR
®
inverter. Once the MOVIGEAR
®
inverter
receives the MOVILINK
®
response, the GLK31A double slave sends the response
"Exchange response OK" to the AS-Interface master. This means another "Read
request" service of the AS-Interface master is not required.
The slave replies after the system-related telegram runtime.
"Exchange response OK" response telegram:
CTT2 service MOVILINK
®
protocol
Code Index Read
length
Write
length
Addre
ssing
Man-
age-
ment
Sub-
index
Index
high
Index
low
MSB
data
Data Data LSB
data
0x1D 0x02 0x09 0x09 0x00 0x32 0x00 0x21 0x29 0x00 0x0F 0x42 0x40
Code 0x1D = Exchange request
Index 0x02 = MOVILINK
®
parameter service
Read length 0x09 = Length of the MOVILINK
®
response
Write length 0x09 = Length of the MOVILINK
®
request
Addressing 0x00 = Addressing the command pcb because this is where the parameter is stored.
Management 0x32 = Write parameter
Subindex 0x00 = Subindex of the parameter
Index High 0x21 = High value of the index
Index Low 0x29 = Low value of the index
=> Index of parameter = 8489
dec
= 0x2129
hex
The value 0x2129
hex
is written on bytes Index High and Index Low.
Data MSB 0x00 The internal scaling of the MOVIGEAR
®
inverter is 1000 times higher than the
real scaling.
The scaling factor then is 1 000 000
dec
= 0xF4240.
This value is written to the 4 data bytes.
Data 0x0F
Data 0x42
Data LSB 0x40
CTT2 service MOVILINK
®
protocol
Code Addre
ssing
Man-
age-
ment
Sub-
index
Index
high
Index
low
MSB
data
Data Data LSB
data
0x5D 0x00 0x32 0x00 0x21 0x29 0x00 0x00 0x00 0x00
Code 0x5D = Exchange request OK
Addressing 0x00 = Addressing the command pcb because this is where the parameter is stored.
Management 0x32 = Write parameter
Subindex 0x00 = Subindex of the parameter
Index High 0x21 = High value of the index
Index Low 0x29 = Low value of the index
=> Index of parameter = 8489
dec
= 0x2129
hex
The value 0x2129
hex
is written on bytes Index High and Index Low.
Data MSB 0x00 If the MOVILINK
®
service has been executed correctly, the data value is 0
dec
=
0x0
Data 0x00
Data 0x00
Data LSB 0x00