IKA CBC 5 control Operating Instructions Manual Download Page 23

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Interface and output

The device can be connected to a PC and operated with the
laboratory software labworld

soft

through the RS 232 inter-

face (11), USB interface (12) or USB interface on the WiCo�

Note:

Please comply with the system requirements togeth-

er with the operating instructions and help section included
with the software�

USB interface:

The Universal Serial Bus (USB) is a serial bus for connecting
the device to the PC� Equipped with USB devices can be
connected to a PC during operation (hot plugging)� Con-
nected devices and their properties are automatically recog-
nized� Use the USB interface in conjunction with labworld-
soft

for operation in “Remote” mode and also to update

the firmware�

USB device drivers:

First, download the latest driver for

IKA

devices with USB

interface from:

http://www.ika.com/ika/lws/download/usb-driver.zip.

Install the driver by running the setup file� Then connect the

IKA

device through the USB data cable to the PC�

The data communication is via a virtual COM port� Configu-
ration, command syntax and commands of the virtual COM
ports are as described in RS 232 interface�

RS 232 interface:

Configuration
- The functions of the interface connections between the

stirrer machine and the automation system are chosen
from the signals specified in EIA standard RS 232 in ac-
cordance with DIN 66 020 Part 1�

- For the electrical characteristics of the interface and the al-

location of signal status, standard RS 232 applies in accor-
dance with DIN 66 259 Part 1�

- Transmission procedure: asynchronous character transmis-

sion in start-stop mode�

- Type of transmission: full duplex�
- Character format: character representation in accordance

with data format in DIN 66 022 for start-stop mode� 1
start bit; 7 character bits; 1 parity bit (even); 1 stop bit�

- Transmission speed: 9600 bit/s�
- Data flow control: none
- Access procedure: data transfer from the stirrer machine to

the computer takes place only at the computer’s request�

Command syntax and format:

The following applies to the command set:
- Commands are generally sent from the computer (Master)

to the device (Slave)�

- The device sends only at the computer’s request� Even

fault indications cannot be sent spontaneously from the
device to the computer (automation system)�

- Commands are transmitted in capital letters�
- Commands and parameters including successive param-

eters are separated by at least one space (Code: hex 0x20)�

- Each individual command (incl� parameters and data) and

each response are terminated with CR LF (Code: hex 0x0d
hex 0x0A) and have a maximum length of 80 characters�

- The decimal separator in a number is a dot (Code: hex

0x2E)�

The above details correspond as far as possible to the recommendations of the NAMUR working party (NAMUR recommenda-
tions for the design of electrical plug connections for analogue and digital signal transmission on individual items of laboratory
control equipment, rev� 1�1)�
The NAMUR commands and the additional specific

IKA

co mmands serve only as low level commands for communication

between the device and the PC� With a suitable terminal or communications programme these commands can be transmitted
directly to the circulator equipment� The

IKA

software package, Labworld

soft

, provides a convenient tool for controlling

circulating equipment and collecting data under MS Windows, and includes graphical entry features, for pump motor speed
ramps for example�

Commands
NAMUR

Commands

Function

IN_PV_1

Read the external actual temperature

IN_PV_2

Read the internal actual temperature