Siemens 7XV5450-0BA00/BB, Руководство пользователя

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[sc_S1_7XV5450, 1, --_--]
Figure 2-3 DIP Switch S1 in Default Setting
You can use the S1 DIP switch, for example to switch the operating mode between compatibility mode and
extended mode.
Compatibility Mode
Data Transfer in Compatibility Mode (Legacy Mode):
The mini star coupler functions transparently in full-duplex operation. Incoming data (from the master) is
forwarded from the receiver of the fiber-optic channel 1 to all transmitters (fiber-optic channels 2, 3, 4, and
5). Data coming from one of the receivers (fiber-optic channels 2, 3, 4, and 5) are output to the transmitter of
the fiber-optic channel 1. The optical interfaces use positive logic as default (non-flickering light: OFF), that is,
incoming light is perceived as an active signal.
For adaptation to systems that use negative logic, a switch is integrated. You can use the switch to change
every channel to negative logic (light in idle state). In the process, the optical input and the optical output of
these interfaces are inverted at the same time. To prevent the mini star coupler from being blocked by nega-
tive logic, the receive channel requires light in the idle state.
Table 2-1 shows the default settings that are available – compatible with older versions of the mini star
coupler /BB and /CC.
i
i
NOTE
The hardware variants of the mini star coupler are compatible with 7XV5450-0BA00/DD, 7XV5450-0BA00/
CC, and 7XV5450-0BA00/BB in compatibility mode.
The mini star coupler works as a bus repeater or hub for the optical interfaces of several DIGSI 4 clients in
compatibility mode.
For more information, see
3.2 Operating Modes and Data Transfer .
Device Structure
2.2 Device Connections
Accessories, Mini Star Coupler, Manual 15
C53000-G9050-C595-1, Edition 05.2020