SEW-Eurodrive MOVIGEAR DAC B, Operating Instructions Manual

Page: 174 / 258

174
Operating Instructions – MOVIGEAR® DAC-B
9
Transmitting individual parameters via AS-Interface
Communication with AS-Interface Double Slave GLK31A
The "Read request" service must be executed to obtain the value of the parameter read
out by the MOVIGEAR
®
inverter.
"Read request" service:
The slave replies after the system-related telegram runtime.
"Read response OK" response telegram:
CTT2 service
Code Index Length
0x10 0x02 0x09
Code 0x10 = Read request
Index 0x02 = MOVILINK
®
parameter service
Length 0X09 = Length of the MOVILINK
®
protocol
CTT2 service MOVILINK
®
protocol
Code Addres
sing
Man-
age-
ment
Sub-
index
Index
high
Index
low
MSB
data
Data Data LSB
data
0x50 0x01 0x31 0x00 0x20 0x87 0x00 0x00 0x00 0x14
Code 0x50 = Read response OK
Addressing 0x01 = Addressing the power section because this is where the parameter is stored.
Management 0x31 = Read parameter => no MOVILINK
®
error
Subindex 0x00 = Subindex of the parameter
Index High 0x20 = High value of the index
Index Low 0x87 = Low value of the index
=> Index of the parameter = 8893
dec
= 0x2087
hex
The value 0x2087
hex
is written on bytes Index High and Index Low.
Data MSB 0x00 When the MOVILINK
®
service has been executed correctly, the data bytes
transmit the heat sink temperature, e.g. 20 °C
Ⳏ
0x14.
The unscaled heat sink temperature is stored in the MOVIGEAR
®
inverter. The
value 0x14 corresponds to a temperature of 20 °C.
Data 0x00
Data 0x00
Data LSB 0x14