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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).
All of the hydronic units (i.e. both MASTER
and SLAVE) connected to the network must be
configured in the same way.
GB
19
Controller for units
OPERATION MANUAL
IT IS strictly forbidden to reproduce this manual, even partially
MIXED NETWORK
The SMALL network on CONVEYED WAVES can also be
connected to a supervision network (ERGO 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
ERGO
BMS
RS485
Slave from
MST/SLV
SPV
Protocol
Modbus
EVO Master: 0
Serial Address
1... 255
Based on the
Speed
Master
OC
MST/SLV
-
Serial Address
-
MEANINGS OF THE LEDS
BLUE
STATUS
Unit OFF
LED
NETWORK
OC Master
LED
Looking at the I/O board from the front, the
STATUS LED is on the left, while the NETWORK
LED is on the right.
SMALL
SMALL
RS485
OC
EVO Master:
EVO Master:
Master
-
EVO Slave:
EVO Slave:
Slave from
Slave from
SPV
Modbus
-
EVO Master: 0
-
EVO Slave:
EVO Slave:
1... 255
9600
-
EVO Master: Master
-
EVO Slave: Slave
EVO Master: 0
-
EVO Slave: 2... 255
GREEN
RED
Alarm in
Unit ON
progress
Communication
No
OK
communication
FC66003554
EVO
Mixed
Network
Master
SPV
Modbus
1... 255
9600
Rev 01
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