AK-PI 200
Manual RS8EX202 © Danfoss 02-2009
3
Number of controllers
Up to 60 controllers can be connected to a single AK-PI 200. If
there are more than 60 controllers, two AK-PI 200 units should be
used.
Up to two AK-PI 200 units can be connected to a single system
manager, in other words up to 120 controllers on the DANBUSS
communication. If there are two AK-PI 200 units, the connection
to the system manager is led via a router or a switch.
Addresses
In principle there are three types of addresses:
IP addresses
Both the system manager and the AK-PI 200 must have an IP
address set.
The address can be either dynamic or static – the desired value is
selected with a setting. If static is chosen, an address must also be
set.
If the system can be accessed externally, the setting in the
system manager AK-SM 720 must always be set to static so that
the external connection always recognises the address and can
communicate with the unit.
(The IP address is set in a menu).
Network addresses
There must always be one and only one master system manager
on a network. This is defined with the address setting = 1. This
system manager controls the communication to all the other
controllers on the network. The PI unit is perceived as a controller
on the network and its address can be viewed in the IP list. (Up to
two PI units can be connected to the system manager, which is
master - i.e. has address =1)
(You set the network address on the front of the system units and
on the front of the PI units.)
Set the system manager to address 1.
If there are several system managers (slave network), set these to
addresses 2 to 10.
Each PI unit is set with a separate address. Select 12 or higher, e.g.
21.
Interconnection
When setting the system manager, a menu must also be set
in which the relevant AK-PI 200 chooses the network. The
system manager then knows the way to the different DANBUSS
controllers. The system manager must be version 1.20 or later.
Controller addresses
All controllers on the same network must have different addresses.
In other words, all controllers that are connected to a system
manager on either:
• the LON communication
• the MODBUS communication or
• the DANBUSS communication.
Start with the addresses on DANBUSS. They must be set with a DIP
switch and cannot be set to higher than 120.
The addresses on the LON and MOD buses can be set higher.
No more than 200 controllers can be connected to a system
manager.
DANBUSS communication: Address options 1 to 120
LON communication:
Address options 1 to 999
MODBUS communication: Address options 1 to 247
Max. number of controllers: 200
