Instructions
Table Of Contents
- Please observe the following notes
- Table of contents
- 1 Description of the SHDSL permanent line modem
- 2 Hardware installation
- 3 Configuration via PSI-CONF
- 4 Optimization
- 5 Eliminating errors
PSI-MODEMSHDSL/SERIAL
1-14
PHOENIX CONTACT 104275_en_c00
Structure of a head station
For the star structure, individual line structures are coupled together via a head station. In
both examples above, devices A5, B2, and C3 are connected via a DIN rail connector
(T-BUS).
Figure 1-12 Examples for RS-485 head stations
Key
①, ②, ③ ... Segments
For a head station, we recommend connecting devices via the T-BUS. In this way, the
segments are electrically isolated.
T-BUS
①
②
③
④
⑤
⑥
①
②
③
④
⑤
⑥
⑦
⑧
Not recommended (RS-485) Recommended (RS-485)