Examples Of Object Access Via The Fieldbus - HBM ClipX Bedienungsanleitung

Notes for objects of the String data type
As from firmware 2.8, string objects can also be read and written, but only the first four
characters at most. Shorter strings are terminated and padded with zero bytes (value =
0x00) when read. When writing, you must also terminate strings of less than four char-
acters with zero bytes. If the value consists only of zero bytes, the string is deleted.
Bits 0 ... 7 contain the first character. No check is made for printable characters. Every
value is applied.
Using EtherCAT, you can also read and write longer strings - see „Access to acyclic data
with EtherCAT/TwinCAT" on page 166.
9.7.2

Examples of object access via the fieldbus

Access via cyclic data via PROFINET / Tia-Portal
The variables table might look like this for example:
Abb. 63: Variables table (example)
The values are set and read in a watch table (Extended Mode). In the following example
the currently displayed color of the system LED is polled (object 0x4200.6).
ClipX
164
Operation via fieldbus