Pilz ST SB DP S, SW paket PROFIBUS-DP - Manual (Page 18)

Setting Parameters
4-6 PROFIBUS-DP-Slave Operating Manual
Configuring input and output data
The length of the input and output data plus data consistency are all
established through the configuration. Data consistency can refer to a
single word or to the whole data length. The maximum data length of the
input or output data is 122 words (244 Bytes). The configuration of the
Master, PSS(1) DP-S or PSS SB 3006 DP-S must match (see also
Chapter 6, page 6-4).
INFORMATION
The PSS(1) DP-S or PSS SB 3006 DP-S transfers all data word by word.
As the PSS CPU always accesses the Slave word by word, byte structures
are not supported.
There are two ways of configuring the PSS(1) DP-S or PSS SB 3006
DP-S: either through a simple ID-format which establishes the length,
consistency and direction of communication, or by means of a special ID
which allows for additional data through a separate length byte. The
configuration is undertaken in an “ID-Byte”.
Simple ID-Format
The simple ID-format is suitable for transmissions of up to a maximum of
16 words. With larger transmissions you will either need to use several ID-
bytes in succession or the special ID-format.
Enter the following parameters in the data block:
• When only output or input data is being transferred, or when input and
output data of the same length is to be transferred simultaneously:
.
.
.
DW 0384
.
.
.
DW 0813
Length of the configuration data in Bytes
• When input and output data of different lengths is to be transferred
simultaneously:
.
. DL DR
.
DW 0384
Input ID-Byte Output ID-Byte
.
.
.
DW 0813
Length of the configuration data in Bytes
DL DR
00 ID-Byte