Ika RC 2 basic Bedienungsanleitung PDF herunterladen (Seite 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 parame-

ters 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 rec-

ommendations of the NAMUR working party (NAMUR rec-

ommendations 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 specic IKA

co mmands serve only as low level commands for commu-

nication between the device and the PC. With a suitable

terminal or communications programme these commands

can be transmitted directly to the circulator equipment. The

IKA

software package, Labworldsoft

, provides a conve-

nient tool for controlling circulating equipment and collect-

ing data under MS Windows, and includes graphical entry

features, for pump motor speed ramps for example.

PC 1.1 Cable:

This cable is required to connect RS 232 port (10) to a PC.

2 RxD

3 TxD

5 GND

7 RTS

8 CTS

RxD 2

TxD 3

GND 5

RTS 7

CTS 8

Fig. 14

Commands:

NAMUR

Commands

Function

IN_PV_2 Read the internal actual temperature

IN_PV_4 Read the pump actual speed

IN_SP_1 Read the internal setting temperature

IN_SP_4 Read the pump setting speed

IN_TMODE Read temperature control

0: internal regulation

OUT_SP_1 xxx Set the internal setting temperature XXX

OUT_SP_12@n Set the WD safety temperature with echo of the set (dened) value.

OUT_SP_4 xxx Set the pump speed XXX

OUT_SP_42@n Set the WD-safety speed with echo of the set (dened) 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 and message PC 1 is displayed

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. The PC 2 warning is displayed.

This command needs to be send within the watchdog time.

RESET Reset the PC control and stop the device functions.

START_1 Start the tempering function

START_4 Start the pump function

STOP_1 Stop the tempering function

STOP_4 Stop the pump function

1 2 ... 9 10 11 12 13 14 15 16 17 18 19

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