Lenze EMF2102IB - Manual (Page 51)

Appendix
8-19
L
_^ONMObk
The abbreviations have the following meanings:
VK1 to VK6
Integers
. Decimal point (if required)
NK1 to NK4 Decimal codes (if required)
” H” (48
hex
) Character [H], transfer of parameter values
in the ASCII hexadecimal format
VH1 to VH8 1 to 8 hexadecimal characters each
[0 to 9; A to F]
” S” (53
hex
) Character [S], transfer of parameter values
in the string format
VS1 to VS240 1 to 12 visible ASCII characters each
(no control characters)
” O” (4F
hex
) Character [O], transfer of parameter values
in the octett string format
VO1 to VO240 Data block in hexadecimal code;
Each character corresponds to a nibble of the
data block
Parameter value in the ASCII decimal format (VD)
The ASCII decimal format (VD) is most often used. The values consist of the following:
1 leading negative sign (if required)
6 digits before the decimal point (VK1 to VK6)
1 decimal point (if required)
4 digits after the decimal point (NK1 to NK4) (if required)
Values from -214748.3648 to 214748.3647 can be displayed.
Tip!
In the ASCII decimal format (VD), the decimal point must not be transmitted if the value does not
have digits after the decimal point.
Parameter value in ASCII hexadecimal format (VH)
The LECOM-A/B protocol supports the transmission of hexadecimal parameter values with a length
of:
•
2 characters (byte value)
•
4 characters (wort/integer value)
•
8 characters (double word/long integer)
In the ASCII hexadecimal format, VH1 is the most significant and VH8 the least significant
hexadecimal character.
Parameter value in the string format (VS)
By means of the string format (VS) of the protocol it is possible to transmit strings with max. 20
characters in both directions.
The Lenze controller can only send the string parameters (e. g. C200).
Parameter values in the octett string format (VO)
The LECOM-A/B protocol includes the octett string format (VO) with which it is possible to transfer
data blocks.
The character sequence corresponds to the filing in the memory (ascending order), i. e. the
character transmitted first is the data block nibble with the lowest address. The data structure of the
data block corresponds to the Intel-memory format with the following definition:
BYTE:
1st high nibble
2nd low nibble
WORD: 1st high BYTE
2nd low BYTE
DWORD: 1st high WORD
2nd low WORD
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