Siemens SITRANS FC410 Inicio Rápido página 8

Figure 4-4 Terminal 1
4. Assemble and tighten the cable gland.
5. Remove the O-ring from lid.
6. Reinstate the lid and screw in until the mechanical stop. Wind back the lid by one turn.
7. Mount the O-ring by pulling it over the lid and tighten the lid until you feel friction from the O-ring on both sides. Wind the
lid by one quarter of a turn to seal on the O-ring.
8. Reinstate and tighten the lid lock screw.
Setting the EOL termination DIP switches
It is important to terminate the Modbus RS 485 line correctly at the start and end of the bus segment since impedance
mismatch results in reflections on the line which can cause faulty communication transmission.
If the device is at the end of the bus segment, it is recommended to terminate the device as shown in Auto hotspot. The
table below shows the relation between the DIP switch settings and the permissible communication interface set-ups.
Default configuration is EOL active.
Location of DIP switch
The DIP switch is located in the electronic as shown below.
Figure 4-5 DIP switch location (all set to ON)
DIP switch settings for communication set-up
DIP switch
Communication set-up
EOL not active
EOL active
NOTICE
Avoid DIP switch settings not mentioned in the table!
DIP switch settings not mentioned in the table above are not allowed and will cause a risk of reduction in communication
interface reliability.
8
Switch 1
On
On
Switch 2
On
On
Switch 3
Off
On
A5E33120231-001, 12/2013
Switch 4
Off
On
SITRANS FC410 flowmeter