Nibe MODBUS 40 Installateurhandbuch Seite 14

GB
MODBUS 40 together with RMU 40 and SMS 40
If RMU 40 or SMS 40 is to be connected with MOD-
BUS 40, MODBUS 40 must be the first unit connected
Tillbehör_singular = translation hint, 2 =
to the climate unit's terminal block.
Connecting to and disconnecting from MODBUS 40
occurs in terminal AA9:X1.
No more than two units can be connected to the cli-
mate unit.
Tillbehör_singular = translation hint, 1&2 =
RMU 40/
SMS 40
GND
B
A
+12V
Unit 2
GND
B
A
+12V
Connecting to Modbus-master
The external Modbus master is connected to terminal
block X2 on the Modbus board (AA9).
NOTE
MODBUS 40 uses the communications stand-
ard RS485.
Connect the master with a cable according to
the recommendations for RS485.
MODBUS 40
MODBUS 40
GND
_
B
A
+
AA9-X2
14
value
value
input board
MODBUS 40
climate unit
Unit 1 Climate unit
SMS 40
SMS 40
EXTERNT
External
Modbus master
Settings
Modbus Master
Method RTU
Speed 9600 baud
Word length 8 bits
Parity None
Stop bits 1
Address Fixed 0x01 up to and including
Modbus 40 v.7.
Selectable 1 - 247 from and includ-
ing
Modbus 40 v.10.
Caution
Software version Modbus 40 v.10 is required
to be able to manage selectable addresses. To
check software version, enter menu 3.1 "Ser-
vice info" in your climate unit.
The climate unit software must be software
version 5539 (4150R7 for NIBE F1345) or later
for it to work with Modbus 40 v.10. If it is not,
perform a software update. Visit
http://www.nibeuplink.com to download your
update file.
Climate unit
1. Start the climate unit and select MODBUS 40 in
menu 5.2 "System settings" (menu 5.2.4 for NIBE
F1345, VVM 310, VVM 320, VVM 325 and
VVM 500).
2. Enter the address of MODBUS 40 in menu 5.3.11.
(This menu is only visible if MODBUS 40 has soft-
ware version Modbus 40 v.10 or later)