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DANGER
High touch voltages
Noncompliance leads to death or severe injury.
Work may only be carried out by electrically qualified personnel who are familiar with and observe the
²
safety requirements and precautions.
Never perform any work if hazardous voltages are present.
²
During connection work, completely de-energize the plant (control cabinet, switch panel) where the
²
device is to be operated.
De-energize the device.
²
Unscrew the enclosure cover using a screwdriver.
²
Remove the protective conductor on the enclosure cover.
²
Remove the enclosure cover.
²
Configure the jumpers according to the following tables.
²
NOTE
i
i
The status of all the jumpers is read only once when the fiber-optic converter is switched on. For the new
configuration of the jumpers to take effect, the fiber-optic converter must be switched off and then back
on following any change to the configuration.
NOTE
i
i
Siemens recommends changing the jumper configuration only when the device is switched off and the
auxiliary voltage is disconnected.
NOTE
i
i
If you open the fiber-optic converter, consider the information in chapter
Table 2-1
Function
Optical fiber 1
Polarity reversal
(Sync/Async)
Table 2-2
Function
RS485 termination
RS485
Accessories, RS485 Optical Fiber Converter for Asynchronous Protocols Up To 115 kBd (1-Channel) 7XV5650-0CA00, Manual
C53000-G9050-C604-1, Edition 03.2020
Fiber-Optic Polarity
Default Setting
Jumper Position
1 (3-2)
Configuration of the RS485 Interface
Default Setting
Jumper Position
X39 (1-2)
X40 (1-2)
X37 (3-2)
X38 (3-2)
Function
Jumper Position
Not inverted
1 (1-2)
Light idle state: OFF
Function
Jumper Position
Unterminated
X39 (3-2)
X40 (3-2)
RS485
–
Device Structure
2.2 Device Connections
4.1
Montage.
Alternative
Function
Inverted
Light idle state: ON
Alternative
Function
Terminating resis-
tors (270-130-270)
inserted
–
17
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