Figure 10: FEC16 with cover removed showing EOL
switch and jumper positions
Setting the End-of-Line (EOL) switch
Each controller has an EOL switch, which, when set to ON,
sets the controller as a terminating device on the bus.
See Figure 10 for the EOL switch location. The default EOL
switch position is Off.
Figure 11: End-of-Line switch positions
To set the EOL switch on a controller:
1.
Determine the physical location of the controller on
the FC bus.
2.
Determine if the controller must be set as a
terminating device on the bus.
Note:
Refer to the
MS/TP Communications Bus
Technical Bulletin
(LIT-12011034)
for detailed
information about EOL termination rules and EOL
switch settings on FC buses.
Refer to the
N2 Communications Bus Technical Bulletin
(LIT-636018)
for detailed information about EOL termina-
tion rules and EOL switch settings on N2 buses.
3.
If the controller is a terminating device on the bus,
set the EOL switch to ON. If the controller is not a
terminating device on the bus, set the EOL switch to
Off.
When a field controller is connected to power with its EOL
switch set to ON, the amber EOL LED on the controller
cover is lit.
Setting the Input and Output Jumpers
Binary Output (BO) source power selection
jumpers
CAUTION
Risk of Electric Shock
Disconnect supply power to the controller before at-
tempting to adjust the Binary Output Source Power
Selection Jumpers. Failure to disconnect the supply
power may result in electric shock.
ATTENTION
Risque de décharge électrique
Débrancher l'alimentation de l'controller avant tout
réglage du Binary Output Source Power Selection
Jumpers. Le non-respect de cette précaution risque
de provoquer une décharge électrique.
Important:
Do
not
connect an external power
source to a BO when the BO power source jumper
is in the internal power (INT) position. Connecting
external power to a BO that sources internal power
can damage the controller and void any warranties.
The BO source power selection jumpers determine
whether a BO provides internal power (sourced from the
controller) to the output load (INT position) or requires
an external power source (EXT position) for the output
load. Figure 12 shows an example of a controller BOs and
the associated power selection jumpers to the right of the
BOs terminal block.
Figure 12: Example binary Outputs and the associated
source power jumper positions
Metasys
System FEC1611 and FEC1621 Field Equipment Controller Installation Guide
16