Meanings of the values sent in the response label, 7 data transmission – NORD Drivesystems BU0020 User Manual

Page 85

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7 Data transmission

BU 0020 GB-2612

85

The following table lists all the orders which can be transferred from the master to the SK 200E
frequency inverter or the technology units. The right-hand column contains the response, which is
normally sent (response label positive). Only certain response labels are possible, depending on the
order label. In case of error (AK negative) the SK 200E frequency inverter will always supply the value
7 in the response label (AK) to the master.

AK

Function

Response label positive

11

Change parameter value (array double word)

without writing into EEPROM

5

12

Change parameter value (array word)

without writing into EEPROM

4

13

Change parameter value (double word)

without writing into EEPROM

2

14

Change parameter value (word)

without writing into EEPROM

1

Meanings of the values sent in the response label,:

AK

Function

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)*

7

Order cannot be executed (with error number in PWE2)

* Only for PPO type 2 and PPO type 4

As long as an order has not yet been executed, the inverter provides the response to the last order.
Therefore the master must always check whether the received response matches the order sent.

For the plausibility check, the value in the response label (AK), the received parameter number
(PNU) with the corresponding Index (IND) as well as the current parameter value (PWE) can be
used for the description of parameters.

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