Structure of a PKW telegram

<< Click to Display Table of Contents >>

Navigation:  »No topics above this level«

Structure of a PKW telegram

Return to chapter overview

Interface_CCLink_02

PNU: parameter number

AK: Request (Output buffer) or response identifier (Input buffer)

 

Table 1: Request identifier (master to slave)

Request identifier (AK)

Meaning

Response identifier (AK)

positive

negative

0

No request

0

7

1

Request parameter value

1 or 2

7

2

Modify parameter value (word)

1

7

3

Modify parameter value (double word)

2

7

6

Request parameter value (array)

4 or 5

7

7

Modify parameter value (array, word)

4

7

8

Modify parameter value (array, double word)

5

7

9

Request number of array elements

6

7

 

If the response identifier is „not possible to process request“ (value 7), there is an additional error code in the PWE (lower value, PWE2).

 

Table 2: Response identifier (valve to master)

Response identifier (AK)

Meaning

0

No response

1

Transfer parameter value (word)

2

Transfer parameter value (double word)

4

Transfer parameter value (array, word)

5

Transfer parameter value (array, double word)

6

Transfer number of array elements

7

Not possible to process request (error code in PWE2)

 

Table 3: Error codes

Error code

Meaning

0

Illegal parameter number (PNU)

1

No access rights

2

Value out of range

3

Wrong array index

5

Wrong data type (The request does not correspond to the

data type of the parameter)

6

Setting not allowed (can only be reset)

17

Request cannot be processed due to operating state

20

Wrong value within value range

201

Unknown command