IKA ICC basic Operating Instructions Manual page 14

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 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 recom-
mendations 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 device� The IKA software package, Labworldsoft
ment and collecting data under MS Windows, and includes graphical entry features, for pump motor speed ramps for example�
Commands:
Commands Function
IN_PV_2 Read the internal actual temperature
IN_PV_3 Read the safety actual temperature
IN_PV_4 Read the pump actual speed
IN_SP_1 Read the internal setting temperature
IN_SP_3 Read the safety setting temperature
IN_SP_4 Read the pump setting speed
OUT_SP_1 xxx Set the internal setting temperature XXX
OUT_SP_12@n Set the WD safety temperature with echo of the set (defined) value�
OUT_SP_4 xxx Set the pump speed XXX
OUT_SP_42@n Set the WD-safety speed with echo of the set (defined) value�
OUT_WD1@n Start the watchdog mode 1 and set the time for the watchdog to n (20���1500) seconds�
Echo of the Watchdog time�
During a WD1-event, the heating and pump functions are switched off�
This command needs to be send within the watchdog time�
OUT_WD2@n Start the watchdog mode 2 and set the watchdog time to n (20���1500) seconds�
Echo of the watchdog time�
During a WD2-event, the set temperature is changed to the WD safety temperature and the pump set
speed is set to the WD safety speed�
This command needs to be send within the watchdog time�
RESET Reset the PC control and stop the device functions�
START_1 Start the heating function
START_4 Start the pump function
STOP_1 Stop the heating function
STOP_4 Stop the pump function
PC 1.1 Cable:
This cable is required to connect RS 232 port (10) to a PC�
1
6
2
7
3
8
4
9
5
1
RxD 2
TxD 3
4
GND 5
6
RTS 7
CTS 8
Fig. 7
9
, provides a convenient tool for controlling circulating equip-
®
5
9
4
8
3
7
2
6
1
1
2 RxD
3 TxD
PC
4
5 GND
6
7 RTS
8 CTS
9
14