NORD Drivesystems BU0090 - Manual (Page 58)

NORDAC AS-Interface Manual
58 BU 0090 GB
6.2.1 Read ID string
The command number 42
hex
is to be entered into DB13.DBB4 and the slave address 1 into DB13.DBB5 in the
transmission buffer of the command interface. After the command or the order from the AS interface has been
completed without error (DONE = 1), the response date is displayed in the reception buffer.
For the allocation of the individual status Bits, please refer to the information in Section 5.1.
For example, the power of the FI is displayed in reception buffer Byte DB13.DBB244 and 245 (corresponding
to Byte 15/16 of the ID string). If e.g. 00 96
hex
is displayed in the Bytes, this corresponds to the display in
parameter P743, i.e. 150
dec
, which in turn corresponds to a power of 1.5kW for two decimal places (SK 700E).
6.2.2 Read diagnosis string
The command number 43
hex
is to be entered into DB13.DBB4 and into the slave address 1 in DB13.DBB5 in
the transmission buffer of the command interface. After the command or the order from the AS interface has
been completed without error (DONE = 1), the response date is displayed in the reception buffer.
For the allocation of the individual status Bits, please refer to the information in Section 5.2.
E.g. in the reception buffer Bytes DB13.DBB233 and 234 (corresponding to Byte 4/5 of the diagnosis string) a
current error of the frequency inverter is displayed. If, e.g. 00 46
hex
is displayed in the Bytes, this corresponds
to the display in parameter P700, i.e. 70
dec
, which in turn in the table of possible error messages corresponds
to error 7.0, AC line input (mains) phase failure.
The status word of the frequency inverter can be read out via Bytes DB13.DBB235 and 236 (corresponding to
Byte 6/7 in the diagnosis string) in the reception buffer. For the allocation of the individual status Bits, please
refer to the information in Section 5.4.1.
6.2.3 Read / Write parameter string
The command number 40
hex
are to be entered into the transmission buffer of the command interface in
DB13.DBB4, the slave address 1 is at be entered in DB13.DBB5, the number of parameter bytes into
DB13.DBB6 and the string bytes to be transferred are to be entered into DB13.DBB7 and above. The index
(see Section 5.3) must always be entered as words in the first two bytes DB13.DBB7 and DB13.DBB8. After
the command or the order from the AS interface has been completed without error (DONE = 1), the transferred
functions or parameters are communicated to the frequency inverter. For the available functions, please refer
to the information in Section 5.3.
Note: The byte numbers in the following tables refer to the byte designations in Section 5.1. Here, the High
byte is always located in front of the Low byte in the data word.
Example of writing of direct parameters:
Direct parameterisation is available in order to quickly re-parameterise selected parameters on the frequency
inverter (See Section 5.3.1). E.g. in order to change the start-up time P102 in parameter set 1 to 10.00s,
proceed as follows: