Mixed Network - Daikin FWECSA Manuel D'installation Et D'utilisation

Slave" on all of the FWECSA controllers acting as the
SLAVEs in the network.
• Protocol = "Modbus"
• Serial address = set a value between 1 and 255, only
in the SLAVE controllers.
• Speed = do not change (9600)
Leave the SETUP OC PARAMETERS UNCHANGED (MST/
SLV = none).
SMALL NETWORK ON CONVEYED WAVES
This type of configuration controls up to a maximum of 32
hydronic units through a single user unit.
The connection is set up using an OC bus, comprised of a
twisted 2-conductor, shielded data cable (figure 03).
In this case, the MASTER controller makes all of the SLAVE
controllers connected to the network operate (instant by
instant) in an identical fashion to the MASTER controller itself.
Accordingly, no SLAVE controller can make autonomous
decisions, nor are they equipped with their own user unit.
The maximum number of SLAVE controllers that can be
connected to this type of network is 32.
Before connecting the I/O boards to the network, each board
needs to be configured.
Connect the user unit to each I/O board.
Press PRG to access the MENU and then enter sub-menu
"Networks and connections" (password = 20). Set the OC
SETUP parameters as follows:
• MST/SLV = set "Master" on the I/O board acting as
the MASTER of the network and "Slave" on all of the
SLAVEs in the network.
• Serial address = set a value between 2 and 34 on the
SLAVE controllers.
It is now possible to connect all of the I/O boards to the
network.
Once the board has been set as SLAVE, it can
no longer communicate with any random user
unit. Accordingly, if the settings are changed, it
will be necessary to RESET it in the following
manner: disconnect the board from the
network and, keeping it powered, place digital
input 10 in short circuit for 15 seconds (clamps
I10 and IC).
EN
19
Controller for units
OPERATION MANUAL
It is strictly forbidden to reproduce this manual, even partially
All of the hydronic units (i.e. both MASTER
and SLAVE) connected to the network must be
configured in the same way.

MIXED NETWORK

The SMALL network on CONVEYED WAVES can also be
connected to a supervision network (External Supervisor
System or SMALL solution) on RS485 through RS485 serial
port of the MASTER controller, thus obtaining what is known
as a MIXED NETWORK. Figure 04 illustrates the diagram
of a mixed network comprised of a SMALL network on
CONVEYED WAVES combined with a supervision network.
PARAMETER OUTLINING TABLE
EXTERNAL
SUPERVISOR
SYSTEM
BMS
RS485
Slave from
MST/SLV
SPV
Protocol Modbus
Serial Address 1... 255
Based on the
Speed
Master
OC
MST/SLV -
Serial Address -
FWECSA
SMALL SMALL
RS485 OC
FWECSA
Master:
Master
-
FWECSA
Slave: Slave Slave: Slave
from SPV from SPV
Modbus -
FWECSA
Master: 0 Master: 0
-
FWECSA
Slave: 1... Slave: 1...
255
9600 -
FWECSA Master: Master
-
FWECSA Slave: Slave
FWECSA Master: 0
-
FWECSA Slave: 2... 255
FC66003946
Mixed
Network
FWECSA
Master:
Master
FWECSA
Modbus
FWECSA
FWECSA
255
9600
Rev 00