TR-Electronic MP Series - Examples of Access to Parameters Via PKW Channel; Read Command P947[0]; Write Command P100 with Value 1000000

PROFINET communication with encoTRive
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5.3.1 Examples of access to parameters via PKW channel
5.3.1.1 Read command P947[0]
The control wants to read the first element of parameter 947 "Faults":
● PKE Command identifier: 7 (Request parameter value array word) + parameter
number: 947 (0x3B3)
● IND Index = 0
● PWE Parameter value = 0
PKW command from the control:
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
PKE
IND
PWE
0x73
0xB3
0x00
0x00
0x00
0x00
0x00
0x00
PKW response from encoTRive:
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
PKE
IND
PWE
0x43
0xB3
0x00
0x00
0x00
0x00
0x02
0xBC
Result:
encoTRive responds positively and returns the value 700 (0x2BC) = tracking error.
5.3.1.2 Write command P100 with value 1000000
The control wants to write parameter 100 "Actual value of position" with value
1000 000:
 PKE Command identifier = 3 (Change parameter value (double word)) +
parameter number = 100 (0x64)
 IND Index = 0
 PWE Parameter value = 1000000 (0xF4240)
PKW command:
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
PKE
IND
PWE
0x30
0x64
0x00
0x00
0x00
0x0F
0x42
0x40
PKW response:
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
PKE
IND
PWE
0x70
0x64
0x00
0x00
0x00
0x00
0x00
0x01
Result:
encoTRive responds negatively via PKE 0x7xxx => Order cannot be executed and
PWE 0x0001 => Value cannot be changed.