72
selecting the DIP SWITCH of the board as
indicated in figure 4/a.
CASCADE mode (fig. 4/b)
Electrically connect all the boilers that form
the modular cascade thermal system and
set installer parameters PAR 15 on every
single boiler as indicated in fig. 4/b.
MODBUS mode (fig. 4/c)
The
RS-485
board can be used for MOD-
BUS communication of every
MURELLE HE
110 R
boiler. In this case, proceed as fol-
lows:
- Set the DIP SWITCH of the
RS-485
board and the PAR 16 as indicated in the
figure.
- Choose the communication configuration
suited to the MODBUS network (PAR 17
INST) according to
Table PAR 17 INST
.
SCHEDA CALDAIA (MASTER)
DIP SWITCH
SCHEDINO RS-485
SCHEDA CALDAIA (SLAVE 1)
DIP SWITCH
SCHEDA CALDAIA (SLAVE ...)
DIP SWITCH
1
2
3
CONNETTORE
CABLATO CN10
(cod. 6319165
SCHEDINO RS-485
SCHEDINO RS-485
CONNETTORE
CABLATO CN10
(cod. 6319165)
CONNETTOR
E
CABLATO CN10
(cod. 6319165
)
1
23
45
6
1
23
45
6
1
23
45
6
X5
X5
WIRED
CONNECTOR
CN10
(code 6319165)
RS-485 BOARD
RS-485 BOARD
RS-485 BOARD
WIRED
CONNECTOR
CN10
(code 6319165)
WIRED
CONNECTOR
CN10
(code 6319165)
BOILER BOARD (SLAVE ...)
BOILER BOARD (SLAVE 1)
BOILER BOARD (MASTER)
Pmin
Pmax
TS
KIT SICUREZZE ISPESL
(solo per mercato Italia)
ON
1
2
3
ON
1
2
3
ON
SONDA ESTERNA (SE)
EXTERNAL SENSOR (SE)
SONDA MANDATA CASCATA (SMC)
CASCADE SUPPLY PROBE (SMC)
CARATTERISTICHE CAVO:
- 3 fili di sezione almeno AWG24
- Schermato e twistato
- Impedenza caratteristica almeno 100
Ω
- Schermatura connessa a terra da un
solo lato della linea
CHARACTERISTICS
OF ELECTRIC CABLE:
- 3 wires of 24 AWG
- Screened and twisted
- Characteristic impedance 100
Ω
- Shield connected to ground with
only one side of the line
–
+
GND
–
+
GND
–
+
GND
–
+
GND
–
+
GND
–
+
GND
Fig. 4/b
INST
ALLER P
ARAMETER SETTIN
G
:
P
AR 1
5
C
ASC
ADE ADDRESS
--
=
N
o
t enabled
0
=
Mas
te
r
1
...7
=
Slave fr
om 1 t
o
7
(A
TTENTION: A
void assigning t
h
e
same number t
o
SL
A
VE boiler
s)
N
O
TE: The ext
e
rnal t
e
m
per
atur
e sensor (SE)
mus
t be connect
ed t
o
t
he MASTER sensor and
the cascade deliver
y sensor (SMC) t
o
boiler
SL
A
VE 1
.
The boar
d sensor
s and connection cables ar
e pr
o-
vided in a kit upon r
e
ques
t code 8092250.
When t
he r
ed LED f
lashes RS-485 boar
d, DIP
S
WITC
H
is no
t se
t corr
ectl
y.
