IKA RV 10 digital FLEX - Manual (Page 29)

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- Each individual command (incl. parameters and data) and each response
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 recommendations
of the NAMUR working party (NAMUR recommendations 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 rotary eva-
porator and the PC. With a suitable terminal or communications program-
me 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 example.
The following table summarises the (NAMUR) commands understood by
the IKA
® control equipment.
Abbreviations used:
X,y
= Numbering parameter (integer)
m = Variable value, integer
n = Variable value, floating-point number
X = 4 Speed
X = 60 Interval time (1-60 seconds, 1 <= m >= 60)
X = 61 Timer (1-199 minutes, 1 <= m >= 199)
X = 62 Direction of lift (m=2-> lift up , m=1-> lift down)
NAMUR Commands Function
IN_NAME
Request designation
IN_PV_X Read actual value
X = 4
IN_SOFTWARE
Request software Id-number,
date and version
IN_SP_X Read target value input
X = 4
OUT_SP_X m
Set target value to m
X = 1,60,61,62
RESET
Switch to normal operation
START_X Switch on appliance (remote) function
X = 4,60,61,62
STATUS
Status outpu
0:Manual operation without interruption
1:Automatic operation Start (without interruption)
ERROR z (z error number see table)
STOP_X Switch off appliance function. The variable
X = 1,60, 61, 62 set with OUT_SP_X remains
Data transfer
HB 10
The heating bath transfers data via IR interfaces. 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. 15)!
RV10 digital
The RS 232 interface at the back of the device is fitted with a 9-pole
SUB-D jack and can be connected to a PC. The pins have serial signals.
Using the laboratory device software “labworldsoft”, the device can be
operated in “Remote” mode.
Note: Please note the system requirements as well as the operating ins-
tructions and help section included with the software.
Serial interface RS 232 (V24)
Configuration
- The functions of the interface lines between the device and the au-
tomation 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 for-
mat 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 machine to
the computer (automation system).
- Commands are transmitted in capital letters.
- Commands and parameters including successive parameters are sepa-
rated by at least one space (Code: hex 0x20).
PC 1.1 Cable (Fig. 16)
This cable is required to connect the 9-pin connector to a PC.
Interfaces and outputs
Fig. 15
IR
Fig. 16