Sime MURELLE EQUIPE 220 BOX ErP Manual Del Usuario página 50

2.9 RS-485 BOARD (fig. 8)
Each module is supplied with the RS- 485
board which allows you to manage the boi-
lers in sequence/cascade.
The board is placed on the back of the con-
trol panel.
2.9. 1 MODBUS mode
(fig. 8/a)
This mode allows for MODBUS communica-
50
tion of at least two boilers in cascade and is
performed by requesting another RS-485
board provided in the kit code 8092244.
ATTENTION: Communication will occur
only with the MASTER boiler, (boiler with
PAR 15 = 0), interpreting the cascade as
a single heat capacity generator:
P = P x No.
CASCADE BOILER BOILERS
To install the second board, proceed as fol-
lows:
- Remove the cover and electrically con-
nect the second RS-485 board equipped
with lid to the RS-485 board already
installed in the MASTER boiler (boiler with
PAR 15 = 0) with the wired connector
provided in the kit.
CAUTION: Insert the wired connector
with caution.
- Set the DIP SWITCH of the new board in
. MODBUS mode.
- Close the lid of the second board.
- Choose the communication configuration
suited to the MODBUS network (PAR 17
INST) according to Table PAR 17 INST.
x 2
Fig. 8