Sime MURELLE EQUIPE 220 BOX, Руководство пользователя

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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-
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
CASCADE
= P
BOILER
x No.
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 .
50
x 2
Fig. 8