Description of the SHDSL permanent line modem
104275_en_c00
PHOENIX CONTACT
1-15
1.6.5
Star structure with other RS-485 components
When using an RS-485 interface, the data is transmitted to the DIN rail connector (T-BUS).
In this way it is possible to combine the SHDSL modems with other RS-485 components
from Phoenix Contact.
Supported RS-485 components:
–
Modular repeater for electrical isolation and increasing the range for RS-485
(PSI-REP-RS485W2, Order No. 2313096)
–
FO converters:
PSI-MOS-RS485W2/FO 660 T, Order No. 2708300
PSI-MOS-RS485W2/FO 660 E, Order No. 2708313
PSI-MOS-RS485W2/FO 850 T, Order No. 2708326
PSI-MOS-RS485W2/FO 850 E, Order No. 2708339
PSI-MOS-RS485W2/FO1300 E, Order No. 2708562
Figure 1-13
Example for a mixed structure (RS-485 interface)
The SHDSL modems are configured via the software as a line structure with three devices,
for example. When using a DIN rail connector, all devices must use the RS-485 interface.
Mixed operation of copper cables and fiber optics
Figure 1-14
Structures that combine copper cables and fiber optics (RS-485)
Structures that combine copper cables and fiber optics are supported.
It is not technically possible to replace a part of an FO ring with an SHDSL line.
A combination of several different SHDSL modems (e.g., from
PSI-MODEMSHDSL/SERIAL and PSI-MODEM-SHDSL/ETH) is not possible.
T T
E
E
E
E
E
SH
D
S
L
SH
D
S
L
SH
D
S
L
...
SHDSL
SHDSL
SHDSL
A
C
B
A
C
B
All devices
with RS-485
interface
Max. 31
Max. 31
FO
SHDSL 2-wire
T T
E
E
E
E
E
SH
D
S
L
SH
D
S
L
SH
D
S
L
...
Max. 31
Max. 31
FO
........
........
........
T
T
T
T
SH
D
S
L
SH
D
S
L
SHDSL 2-wire
All devices
with RS-485
interface
RS-485
Max. 31
Max. 31
Max. 31
Max. 31
Redundant FO ring
FO
Not possible
