IKA RV 10 control FLEX - Manual (Page 41)

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032010
Serial interface RS 232 (V24)
Configuration
- The functions of the interface lines between the device and the
automation system are a selection from the signals specified in
the EIA standard RS232 C, as per DIN 66 020 Part 1.
- For the electrical characteristics of the interface and the allocation
of signal status, standard RS 232 C applies in accordance with DIN
66 259 part 1.
- Transmission procedure: asynchronous character transmission 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 device 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 stirrer machine sends only at the computer’s request. Even
fault indications cannot be sent spontaneously from the stirrer ma-
chine to the computer (automation system).
- Commands are transmitted in capital letters.
- Commands and parameters including successive parameters are
separated by at least one space (Code: hex 0x20).
- Each individual command (incl. parameters and data) and each re-
sponse are terminated with Blank CR Blank LF (Code: hex 0x20
hex 0x0d hex 0x20 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 recom-
mendations of the NAMUR working party (NAMUR recommen-
dations 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 m-
mands serve only as low level commands for communication
between the rotary evaporator and the PC. With a suitable ter-
minal or communications programme these commands can be
transmitted directly to the rotary evaporator. The IKA software
package, labworldsoft, provides a convenient tool for controlling
rotary evaporator and collecting data under MS Windows, and
includes graphical entry features, for motor speed ramps for ex-
ample.
The following table summarises the (NAMUR) commands un-
derstood by the IKA. control equipment.
HB 10
Data is exchanged between the heating bath and the drive unit by
means of an infrared link. These are located on the left display side
of the heating bath or on the right side of the drive unit. Do not place
any objects between the two operating units as otherwise the data
transfer may be interrupted (fig. 22)!
RV 10 control
The device can be operated in “Remote” mode via an RS 232 or USB
interface using labworldsoft® laboratory software.
The RS 232 interface at the back of the device, see fig. 20, is fitted
with a 9-pole SUB-D jack and can be connected to a PC. The pins
have serial signals. The USB interface is located on the left-hand
side of the display on the drive unit and can be connected to a PC
using the USB cable supplied.
Note: Please note the system requirements as well as the operating
instructions and help section included with the software.
USB Interface
The Universal Serial Bus (USB) is a serial bus system used to con-
nect the RV 10 control with the PC (Fig. 23). Devices that support
USB can be connected to each other whilst they are running (hot
pluggable) and provide automatic recognition of the connected de-
vices and their properties.
Use the USB interface in conjunction with labworldsoft® for opera-
tion in “Remote” mode to update the solvent library. Navigate to
http://www.ika.net/ika/lws/download/RV10.cfg to update.
Installation
Connect the RV 10 control to the PC using the USB data cable. t. The
RV 10 control will then transmit information to the Windows opera-
ting system to tell it which device drivers are required. Windows
will then either:
- Load the driver,
- Install the driver automatically if not already installed,
- Prompt the user to perform a manual installation.
Navigate to http://www.ika.net/ika/lws/download/stmcdc.inf.
Interfaces and outputs
Fig. 22
Fig. 23