Honeywell XL 800 SERIES - Manual (Page 14)

Mounting/Dismounting Modules Excel 800
EN1B-0410GE51 R0908A
14
LOCK
4 4
Fig. 14. HEX switch location
NOTE:
If the HEX switch setting is changed, the Panel
Bus I/O module will revert to its default
configuration. With L
ON W ORKS Bus I/O modules,
the HEX switch is without function.
Setting the I/O Bus Switch
► Set the I/O Bus switch S2 of the XCL8010AU Controller
Module depending on the modules connected to terminals
71 ─ 78 and the desired communication as follows:
Table 10. I/O Bus switch settings
communication S2 setting terminals
L ON W ORKS Bus
only
LON 71 ─ 74 L ON W ORKS Bus
75 ─ 78 L ON W ORKS Bus
11 ─ 14 L ON W ORKS Bus
Panel Bus and
L
ON W ORKS Bus
Panel 71 ─ 74 Panel Bus
75 ─ 78 Panel Bus
11 ─ 14 L
ON W ORKS Bus
Fig. 15. S2 I/O Bus switch
L
ON
W
ORKS
Bus Topologies
The L ON W ORKS Bus is a 78-kilobit serial link that uses
transformer isolation so that the bus wiring does not have a
polarity. I.e. it is not important which of the two L
ON W ORKS
Bus terminals are connected to each wire of the twisted pair.
The L
ON W ORKS Bus does not need to be shielded on the
controller module side.
The L
ON W ORKS Bus can be wired in daisy chain, star, loop or
any combination thereof as long as the maximum wire length
requirements are met.
Configuration
The recommended configuration is a daisy chain with two bus
terminations. This layout allows for max. L
ON W ORKS Bus
lengths, and its simple structure presents the least number of
possible problems, particularly when adding on to an existing
bus.
C-Bus Topologies
Via the C-Bus up to 30 C-Bus devices (e.g., controllers, etc.)
can communicate with one another and a PC central. The C-
Bus must be connected via the individual controllers (open
ring).
NOTE:
Star connection is not allowed because
uncontrollable line reflections may occur.
Mounting/Dismounting Modules
WARNING
Risk of electric shock or equipment damage!
► Do not touch any live parts in the cabinet.
► Disconnect the power supply before you start to install the
Excel 800 System.
More than one disconnect switch may be required to de-
energize the system.
► Do not reconnect the power supply until you have
completed the installation.
NOTE:
The terminal socket of each I/O module can be
mounted and wired before inserting and locking
the corresponding electronic module.