IKA C-MAG HS 7 control Betriebsanleitung Seite 50

› Character format: character composition according to data format
in DIN 66022 for start-stop operation. 1 start bit, 7 character bits,
1 parity bit (even), 1 stop bit.
› Transmission speed: 9,600 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 lab device (Slave).
› The lab device only sends at the computer's request.
Even fault indications cannot be sent spontaneously from
the lab device 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 response are terminated with Blank CR 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 commands serve
only as low level commands for communication between the lab device
and the PC. With a suitable terminal or communications program these
commands can be transmitted directly to the lab device. The IKA software
labworldsoft ® , provides a convenient tool for controlling lab device and
collecting data under MS Windows, and includes graphical entry features, for
motor speed ramps for example.
98 Interfaces and outputs
The following table summarises the (NAMUR) commands
understood by the IKA equipment.
NAMUR Commands Function
IN_NAME Read the device name
IN_PV_1 Read actual external sensor value
IN_PV_2 Read actual hotplate sensor value
IN_PV_4 Read stirring speed value
IN_PV_5 Read viscosity trend value
IN_SP_1 Read rated temperature value
IN_SP_3 Read rate set safety temperature value
IN_SP_4 Read rate speed value
OUT_SP_1 Adjust the set temperature value
OUT_SP_1 100 Set temperature value
OUT_SP_4 Adjust the set speed value
OUT_SP_4 10 Set speed value
START_1 Start the heater
STOP_1 Stop the heater
START_4 Start the motor
STOP_4 Stop the motor
RESET Switch to normal operating mode
SET_MODE_n
Set operating mode
(n=A, B or D)
Interfaces and outputs 99