Wika CTH6300 User Manual download pdf (Page 34)

34 WIKA operating instructions, models CTH6300 and CTH6500

2079988.04 07/2014 GB/D

7. Interface protocol RS-232

CTH6500

Recognise MEASURED VALUE 1 + 2 automatically FC (hex)

Enable keyboard 0 (hex)

Read version number of rmware I (ASCII)

Read storage (only for instruments with data logger) n (ASCII)

If data are read out from the instrument using the FC (hex) command, the

keyboard is locked. It can be enabled again using the 0 (hex) command.

The data are sent by the instrument in the following format.

Data type = String

The string length depends on whether it is a 1-channel or a 2-channel instrument.

Example: Turbo Pascal source code for interface initialisation

PROCEDURE V24open (com1, com2: Boolean);

{RS 232 initialisation}

VAR value: Byte;

BEGIN

IF com1 THEN BEGIN {of COM 1 initialisation}

PORT [$3FB]: = 128; {Enable Baud entry}

PORT [$3F8]: = 48; {Baud rate - LSB, 2400 Baud}

PORT [$3F9]: = 0; {Baud rate - MSB}

PORT [$3FB]: = 7; {8 bits, No parity, 2 Stop}

PORT [$3FC]: = 2; {DTR = 0, RTS = 1}

Value: = PORT [$3F8] {Clear receiving register}

END;

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Wika CTH6300 User Manual Page 34