EXCEL 500/600 - INSTALLATION INSTRUCTIONS
EN1R-1047GE51 R0913
32
In the case of the XCL5010, the LONWORKS bus connections
are located on the application module as shown in Fig. 69:
XDL5050
1 2 3
A1
A2
not used
4 5 6
SHIELD
RESERVED
C-BUS
LonWorks
BUS
C-BUS RxD, YELLOW
C-BUS TxD, YELLOW
LEDs
LonWorks service LED, RED
POWER, GREEN
LonWorks service button
C+
C-
C-BUS TERMI-
NATION SWITCH
BOTTOM
TOP
MIDDLE
Fig. 69. XDL5050 application module LEDs and ports
LONWORKS Bus Termination
Depending upon the configuration, either one or two ter-
mination modules are required for terminating a L
ONWORKS
bus with FTT devices on it. The following L
ONWORKS
termination unit is available for this purpose:
XAL-Term L
ONWORKS connection and termination
module (see Fig. 70), which can be mounted on DIN rails
and in fuse boxes.
REMOVABLE SCREW-TYPE
3-POLE TERMINAL BLOCK
3
1
5
62
SHIELD
PLUG-IN
JUMPER
SHIELD
4
PARK POSITION; NO TERMINATION
FTT/LPT BUS TOPOLOGY; R: 105 Ohm
FTT/LPT FREE TOPOLOGY; R: 52.3 Ohm
FREE TOPOLOGY:
52.3 Ohm
BUS TOPOLOGY:
105 Ohm
11
22
100 μ 100 μ
100 μ 100 μ
52.3 Ohm 105 Ohm
LON TERMINATION
Fig. 70. XAL-Term
In the case of either a daisy chain or free-topology LONWORKS
bus layout, the max. lengths described above must be
adhered to.
System Bus (C-Bus)
Up to 30 controllers can communicate with one another and a
PC central via the system bus. Instead of an Excel 500 / 600 /
800 controller, other system bus compatible components can
also be connected. (Excel IRC Multicontroller; Excel EMC).
The system bus must be connected through the individual
controllers (open ring).
Excel 800 Excel 100 Excel 500 Excel 50
Fig. 71. C-bus topology
IMPORTANT
Star connection is not permissible because
uncontrollable line reflections may occur.
For setting up the system bus in the right way, three steps
have to be followed:
1. Select submodule for system bus communication
(XC6010, only)
2. Specify cable for system bus.
3. Set up submodule (XC6010), CPU module (XC5010C),
or application submodule (XCL5010).
Submodule Selection (XC6010)
Two submodules for system bus communication are
available. The selection depends on the communication
speed.
Table 24. C-Bus submodule baud rates
submodule possible baud rates
XD505A 9600 baud
XD508 9600 baud
19200 baud
76800 baud
If the system bus speed throughout the system life-time is
restricted to 9600 baud, then a submodule XD505A should be
chosen. Otherwise, the XD508 must be used.
NOTE: All communication submodules on one bus must be
of the same type, i.e. either uniquely XD505A or
uniquely XD508. Do not use a mix between
submodules XD505A and XD508 on the same bus.
IMPORTANT
For communication with more than 9600 baud it is
required to enable the termination of the first and the
last device on the C-bus (see the following sections).
The controllers with termination must be switched
ON prior to the controllers in the middle of the C-bus.
The C-bus might not work if the controllers with
termination are switched OFF.
The max. communication speed of the XC5010C/XCL5010 is
76800 baud. The XC5010C/XCL5010 can be mounted
together with the XC6010 (with XD505A or XD508
submodule) since the XC5010C/XCL5010 communication
speed can be changed to match either submodule.
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