Operating Instructions – Electronic Motor DRC.-..-DAC
167
9
Transmitting individual parameters via AS-Interface
Communication with AS-Interface Double Slave GLK31A
Reading out the
heat sink
temperature
Read the heat sink temperature from parameter
8327.0
as follows:
"Exchange request" service:
When the GLK31A double slave receives the service "Exchange request" 0x1D, it sends
the MOVILINK
®
protocol to the DRC inverter. Once the DRC 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 transmission times for parameters.
"Exchange response OK" response telegram:
CTT2 service
MOVILINK
®
protocol
Code Index
Read
length
Write
length
Address-
ing
Manage-
ment
Sub-
index
High
index
Low
index
MSB
data
Data Data LSB
data
0x1D
0x02
0x09
0x09
0x01
0x31
0x00
0x20
0x87
0x00 0x00 0x00 0x00
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 0x01 =
Addressing the power section because this is where the parameter is stored.
Management 0x31 =
Read parameter
Subindex 0x00 =
Subindex of the parameter
High index 0x20 =
High value of the index
Low index 0x87 =
Low value of the index
=> Index of the parameter = 8327
dec
= 0x2087
hex
The value 0x2087
hex
is written to the bytes high index and low index.
Data MSB 0x00
The value 0x00 is written to the data when the DRC parameters are read.
Data 0x00
Data 0x00
Data LSB 0x00
CTT2 service
MOVILINK
®
protocol
Code
Address-
ing
Manage-
ment
Sub-
index
High
index
Low
index
MSB
data
Data
Data
LSB
data
0x5D
0x01
0x31
0x00
0x20
0x87
0x00
0x00
0x00
0x14
Code 0x5D =
Exchange request 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
High index 0x20 =
High value of the index
Low index 0x87 =
Low value of the index
=> Index = 8893
dec
= 0x2087
hex
The value 0x2087
hex
is written to the bytes high index and low index.
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 DRC inverter. The value
0x14 corresponds to a temperature of 20 °C.
Data 0x00
Data 0x00
Data LSB 0x14