Operating Instructions – Electronic Motor DRC.-..-DAC
173
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.
"Write request" service:
The slave replies after the system-related transmission times for parameters.
"Write response OK" response telegram:
Once the GLK31A double slave has correctly received the data, it immediately sends
the response 0x51 "Write response OK" to the master. At the same time, the
MOVILINK
®
protocol is sent to the DRC inverter.
The response of the DRC protocol is evaluated with the "Read request" service as
follows to make sure that the [MOVIGEAR
®
/ DRC] inverter has changed parameter
8489.0
.
"Read request" service:
CTT2 service
MOVILINK
®
protocol
Code
Index Length Address
-ing
Manage-
ment
Sub-
index
High
index
Low
index
MSB
data
Data
Data
LSB
data
0x11
0x02
0x09
0x00
0x32
0x00
0x21
0x29
0x00
0x0F
0x42
0x40
Code 0x11 =
Write request
Index 0x02 =
MOVILINK
®
parameter service
Length 0x09 =
Length of the MOVILINK
®
protocol
Addressing 0x00 =
Addressing the command PCB because this is where the parameter is stored
Management 0x32 =
Write parameter
Subindex 0x00 =
Subindex of the parameter
High index 0x21 =
High value of the index
Low index 0x29 =
Low value of the index
=> Index of parameter = 8489
dec
= 0x2129
hex
The value 0x2129
hex
is written to bytes high index and low index.
Data MSB 0x00
The internal scaling of the DRC inverter is 1000 times higher than the real scal-
ing.
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
Code
0x51
Code 0x51 =
Write response OK
CTT2 service
Code
Index Length
0x10
0x02
0x09
Code 0x10 =
Read request
Index 0x02 =
MOVILINK
®
parameter service
Length 0X09 =
Length of the MOVILINK
®
protocol