Sime MURELLE HM Para El Instalador página 86

MODBUS mode (fig. 4/c)
The RS-485 board can be used for MOD-
BUS communication of every MURELLE
HM 25 T - 35 T boiler.
In this case, proceed as follows:
COMUNICAZIONE MODBUS
MODBUS COMMUNICATION
GND
+
–
GND
+
–
TABELLA PAR 17 INST/ Tab. PAR 17 INST
PAR 17 INST
Par 17 INST
86
- 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.
DIP SWITCH CONNETTORE
CABLATO CN10
ON
(cod. 6319165)
WIRED CONNECTOR CN10
1 2 3
(code 6319165)
SCHEDINO RS-485
RS-485 BOARD
SCHEDA CALDAIA / BOILER BOARD
Baud Rate
Baud Rate
1 1200
2 1200
3 1200
4 1200
5 1200
6 1200
7 2400
8 2400
9 2400
10 2400
11 2400
12 2400
13 4800
14 4800
15 4800
16 4800
17 4800
18 4800
19 9600
20 9600
21 9600
22 9600
23 9600
24 9600
25 19200
26 19200
27 19200
28 19200
29 19200
30 19200
INSTALLER PARAMETER SETTING:
PAR 16
PAR 17
ATTENTION: Upon setting the parameters, we
recommend turning the boiler off and then back on
again.
N° Bit Dati Parità
No. Data Bit Parity
8 No
8 No
8 Pari / Even
Pari /
8 Even
8 Dispari /
Odd
Dispari /
8 Odd
8 No
8 No
Pari / Even
8
Pari / Even
8
8 Dispari / Odd
8 Dispari /
Odd
8 No
8 No
Pari /
8 Even
Pari / Even
8
Dispari /
Odd
8
Dispari /
8 Odd
8 No
8 No
Pari / Even
8
Pari / Even
8
Dispari /
8 Odd
Dispari / Odd
8
8 No
8 No
Pari / Even
8
Pari /
8 Even
Dispari /
Odd
8
Dispari / Odd
8
CASCADE+MODBUS mode (fig. 4/d)
This mode allows for MODBUS communica-
tion of at least two boilers in cascade and is
performed by requesting another RS-485
board provided in the kit code 8092244.
MODBUS ADDRESS
-- = Not enabled
1...31 = Slave from 1 to 31
(ATTENTION: Avoid calling the boi-
ler with the same number assigned
to either appliances)
MODBUS CONFIGURATION
-- = Not enabled
1...30 = Default value: 25
(See Table PAR 17 INST)
Bit di Stop
Stop Bit
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
Fig. 4/c