Bühler technologies TC-MINI Kurzanleitung Seite 10

TC-MINI
5.2 Using the Digital Interface
The digital interface on this device is a Modbus RTU protocol,
which physically communicates via RS485 (2-wire). The cooler
therefore takes on the role of the slave in communication.
The Modbus interface enables direct access to process and
diagnostic data and parameters during operation.
5.3 Modbus Configuration
The settings below are the defaults; the parameters can be ad-
justed if the interface is enabled.
1 start bit
8 data bits
1 parity bits (configurable)
1 stop bit (*)
Baudrate: 19200 bps (configurable)
Device ID: 10 (configurable)
(*) The length of a Modbus frame is always 11 bit, configuring
the interface at 0 data bits automatically changes the number
of stop bits to 2.
5.4 Modbus Communication
Communication via Modbus RTU is always imitated by the
master (request). The slave (typically) responds to the request
with a response. A Modbus RTU frame for a request/response
always has the following structure:
Address field Function code
(A) (FC)
1 byte 1 byte
Register addresses and data are transferred in Big Endian
format.
Every register stands for a 16 bit value, with the information
represented in various data types. The data type and required
function code are assigned to the respective registers in the
following tables.
To read/write data types with sizes larger than an individual
register, multiple registers must be addressed.
Supported function codes:
Function code (FC)
Read Holding Registers
Write Multiple Registers
Data types:
Description Number of bytes
Float 4
Int16 2
Uint16 2
Int32 4
Uint32 4
10 Bühler Technologies GmbH
Data CRC
1 ... 252 bytes 2 bytes
FC values
3
16
Number of registers
2
1
1
2
2
6 Maintenance
Always observe the applicable safety- and operating regula-
tions when performing any type of maintenance. Please refer
to the original operator's manual on the included CD or online
at www.buehler-technologies.com for maintenance informa-
tion.
7 Service and Repair
Please refer to the original operator's manual on the included
CD or online at www.buehler-technologies.com for a detailed
description of the unit including information on
troubleshooting and repair.
8 Disposal
The heat exchanger is charged with glycol-based coolant.
The applicable national laws must be observed when dispos-
ing of the products. Disposal must not result in a danger to
health and environment.
The crossed out wheelie bin symbol on Bühler Technolo-
gies GmbH electrical and electronic products indicates special
disposal notices within the European Union (EU).
The crossed out wheelie bin symbol indic-
ates the electric and electronic products
bearing the symbol must be disposed of
separate from household waste. They must
be properly disposed of as waste electrical
and electronic equipment.
Bühler Technologies GmbH will gladly dis-
pose of your device bearing this mark.
Please send your device to the address be-
low for this purpose.
We are obligated by law to protect our employees from haz-
ards posed by contaminated devices. Therefore please under-
stand that we can only dispose of your waste equipment if the
device is free from any aggressive, corrosive or other operat-
ing fluids dangerous to health or environment. Please com-
plete the "RMA Form and Decontamination Statement", avail-
able on our website, for every waste electrical and electronic
equipment. The form must be applied to the packaging so it is
visible from the outside.
Please return waste electrical and electronic equipment to the
following address:
Bühler Technologies GmbH
WEEE
Harkortstr. 29
40880 Ratingen
Germany
Please also observe data protection regulations and remem-
ber you are personally responsible for the returned waste
equipment not bearing any personal data. Therefore please
be sure to delete your personal data before returning your
waste equipment.
BX440015 ◦ 12/2022