4
B 242 - XTE 602 C1 Eng.
22.11.10 AM
REV. 02
We reserve the right to make changes witout notice
COSTER
26.
3
C R i n g c o n n e c t i o n
N O
10. COMMUNICATION
10.
1
C-Ring : communication between controllers
(
for detailed information please see technical data sheet T 022)
XTE 602 controller is
always “Primary” .
In the C-Ring the following signals are transmitted :
– permission to operate as
Slave
controllers
– value of the
outside temperature
(
use of a single detector for several controllers)
– value of
flow temperature
requested by zone controllers; used by “PRIMARY” controller for
regulation temperature boilers (if scheduled).
–
DHW priority
and/or
anticondensing
=
closure valves heating zones with modulating control
action.
NO = connection to C-Ring not scheduled
YES = connection to C-Ring scheduled
10.
2
C-Ring wiring diagram
10.
3
C-Bus communication for telemanagement
(
for detailed information please see technical data sheet T 021)
XTE 602 provides :
– remote Telemanagement by when enabled by
C-Bus Plug-in type ACB 468
– local communication (e.g. setting via PC) when enabled with Test
Plug-in ACX 232
Telemanagement is bidirectional, with one or more local PCs and/or the remote central PC via
PSTN.
Local communication is direct to a portable PC to be connected directly to the unit.
From PC or PCs it is possible to display and/or change :
– the data and values entered on display pages of the controller and those of configuration
dedicated exclusively to telemanagment (see 4.TECHNICAL DATA)
– operational status of plant components (pumps, auxiliaries in general)
– acquire alarms coming from boiler plant
– read the measurements of the detectors (temperatures : outside, flow, boiler, etc)
10.
4
C-Bus electrical connection for local or remote Telemanagement
Each controller must be equipped
with the C-Bus Plug-in of the required
type for the controller in question
10.
5
Connection to PC for local communication via test Plug-in ACX 232
Extract the C-Bus Plug-in and insert the test Plug-in ACX 232; use a standard cable to connect the RS232 plug to
the PC (the cables are included in the “CONVENIENCE KIT”.
If the PC has only USB inputs use a standard RS232 to USB conversion cable.
Observations
: – Before communicating, ensure that the address entered in the controller is the address with which you wish
to communicate via PC.
– It is advisable to use a portable PC powered by battery with the connection to 230 volts unplugged (or 240
volts for UK market), since the earth (0 volts) of the controller is connected to that of the RS 232 and so to that
of the PC. By connecting the two earths together you could have dispersed currents, if the earths have not
been well made and if the PC has its 0 volt connected directly to the central pole of the plug (as is usual)
ACCESSORIES:
–Test Plug-in =
ACX 232
–Convenience kit =
KIT RS 232
The “Convenience kit” contains
the 2 cables & other useful ac-
cessories.
