BECKHOFF BK4000 - Manual (Page 18)

Basic information
18 BK4000
used depending on the type of the bus terminals, i.e. analog or digital
(3xhex, 0xhex). These are the identifiers for remote bus stations from third-
party manufacturers.
If there are analog and digital terminals on one BK4000, the bus coupler
uses the analog identifier 3xhex. The following table shows an overview.
Signal type Signal direction HEX-Value
Digital INPUTS 02
Digital OUTPUTS 01
Digital INPUTS/OUTPUTS 03
Analog INPUTS 32
Analog OUTPUTS 31
Analog INPUTS/OUTPUTS 33
The length information is coded automatically from 0 to 32 words. A stan-
dard length of up to 9 words is supported by every bus master. The length
up to 32 words is only supported from firmware version 3.2 and higher.
Please pay attention to lengths greater than 10 words.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Data direction I/O, I,O
Participant-Type
Participant-Class
Messages
Data width
Depending on the configuration software for the InterBus master interfaces,
the length and the ID code are entered separately or as a value in „16-bit
hex format“.
Most configuration programs permit reading of the actual configuratioan by
the master. The following table shows the possibilities of the length code.
Length of fitted periphery Register width in the ID code
0 0
1 Word 1 Word
2 Words 2 Words
3 Words 3 Words
4 Words 4 Words
5 Words 5 Words
6 Words 6 Words 1)
7 Words 7 Words 1)
8 Words 8 Words
9 Words 9 Words
10 Words 10 Words 1)
11 - 12 Words 12 Words 1)
13 - 14 Words 14 Words 1)
15 - 16 Words 16 Words 1)
17 - 24 Words 24 Words 1)
25 - 32 Words 32 Words 1)