Communication - Bitzer LHL3E/2EES-2Y Instructions De Service

8.1.9

Communication

The upper side of the ECOLITE controller is equipped
with an RS485 interface for communication with other
devices (e.g. with a PC using the BITZER BEST SOFT-
WARE). The BEST interface converter can be connec-
ted to the ECOLITE controller via an adaptor cable. To
connect an external device to the ECOLITE controller
via a plug-in connection, the following components are
required:
Connector housing:
Contacts:
Contact assignment: Pin 1 – RS485-
Protocol:
Type of user:
Address:
Speed:
Data format:
78
1x MOLEX part No.:
51065-0300
3x MOLEX part No.:
50212-8000
Pin 2 – RS485+
Pin 3 – GND
Modbus RTU
Slave
1
19200 baud
1 start bit
8 data bits
Even parity
1 stop bit
Adjustment possibilities:
Note: Adjusting the parameters may lead to a situation
where the communication of the external device with
the controller is no longer possible without performing
further modifications on the external device.
Modbus Function
address
Modbus: Modbus address of ECOLITE controller
53274
1 – 255
(read
Ex-factory setting: 1
and
write)
Modbus: Modbus speed
53275
3 = 9600
(read
4 = 19200
and
write) Ex-factory setting: 4 = 19200 baud
Modbus: Modbus parity
53276
1= even
(read
2 = none
and
write) 3 = odd
Ex-factory setting: 0 = even parity
After having changed the parameters listed above, an
interruption of the supply voltage and a restart of the
controller is required in order to activate the new values
for communication of the controller.
The address "1" can be interpreted by the modbus
master used as different binary numbers, depending on
its setting. If necessary, try "0" or "2".
KB-206-2