IKA RV 10 basic Operating Instructions Manual

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IKA RV 10 basic Operating Instructions Manual Manual pdf 7 page image

Data transferHB 10 digitalThe heating bath transfers data via IR interfaces. These are locatedon the left display side of the heating bath or on the right side of thedrive unit. Do not place any objects between the two operating unitsas otherwise the data transfer may be interrupted (fig. 15)!RV10 digitalThe RS 232 interface at the back of the device is fitted with a 9-poleSUB-D jack and can be connected to a PC. The pins have serial si-gnals. Using the laboratory device software “labworldsoft”, the de-vice can be operated in “Remote” mode.Note: Please note the system requirements as well as the operatinginstructions and help section included with the software.Serial interface RS 232 (V24)Configuration- The functions of the interface lines between the device and theautomation system are a selection from the signals specified inthe EIA standard RS232 C, as per DIN 66 020 Part 1.- For the electrical characteristics of the interface and the allocationof signal status, standard RS 232 C applies in accordance with DIN66 259 part 1.- Transmission procedure: asynchronous character transmission instart-stop mode.- Type of transmission: full duplex.- Character format: character representation in accordance with dataformat in DIN 66 022 for start-stop mode. 1 start bit; 7 characterbits; 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 computertakes place only at the computer’s request.Command syntax and formatThe following applies to the command set:- Commands are generally sent from the computer (Master) to thedevice (Slave).- The stirrer machine sends only at the computer’s request. Evenfault 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 areseparated 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.- Each individual command (incl. parameters and data) and each re-sponse are terminated with Blank CR Blank LF (Code: hex 0x20hex 0x0d hex 0x20 hex 0x0A) and have a maximum length of 80characters.- 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 analogueand digital signal transmission on individual items of laboratorycontrol equipment, rev. 1.1.The NAMUR commands and the additional specific IKA com-mands serve only as low level commands for communicationbetween the rotary evaporator and the PC. With a suitable ter-minal or communications programme these commands can betransmitted directly to the rotary evaporator. The IKA softwarepackage, labworldsoft, provides a convenient tool for controllingrotary evaporator and collecting data under MS Windows, andincludes graphical entry features, for motor speed ramps for ex-ample.The following table summarises the (NAMUR) commands un-derstood by the IKA control equipment.Abbreviations usedX,y = Numbering parameter (integer)m = Variable value, integern = Variable value, floating-point numberX = 4 SpeedX = 60 Interval time (1-99 seconds, 1 <= m >=99)X = 61 Timer (1-199 minutes, 1 <= m >=199)X = 62 Direction of lift (m=2-> lift up , m=1-> lift down)NAMUR FunctionCommandsIN_NAME Request designationIN_PV_X Read actual valueX = 4IN_SOFTWARE Request software Id-number,date and versionIN_SP_X Read target value inputX = 4OUT_SP_X m Set target value to mX = 1,60,61,62RESET Switch to normal operationSTART_X Switch on appliance (remote) functionX = 4,60,61,62STATUS Status output0:Manual operation without interruption1:automatic operation Start(without interruption)ERROR z (z error number see table)STOP_X Switch off appliance function. The variableX = 1,60, 61, 62 set with OUT_SP_X remains.Fig. 16Interfaces and outputs22 042009IRFig.15