GREISINGER GMH 3430, Operating Manual

Page: 9 / 10

H34.0.01.6C-11 Operating Manual GMH 3430 page 9 of 10
14 The serial interface
All measuring data and settings of the device can be read and changed by means of the serial interface and a suit-
able electrically isolated interface adapter (GRS3100, GRS3105 or USB3100).
In order to avoid faulty transmission, we have designed elaborate security measures for interface communication.
The following standard software packages are available for data transfer:
- EBS9M 9-channel software to display the measuring value (channel 1) and the temperature (ch. 2)
- EASYCONTROL : Universal multi-channel software (EASYBUS-, RS485-, or GMH3000- operation possible) for
real-time recording and presentation of measuring data in the ACCESS®-data base format.
In case you want to develop your own software we offer a GMH3000-development package including:
- a universally applicable Windows functions library ('GMH3000.DLL') with documentation, can be used by all
‘es-
tablished’ programming languages, suitable for:
Windows 95™, Windows 98™, Windows NT™, Windows 2000™, Windows XP™, Windows Vista™
.
- Programming examples Visual Basic 4.0, Delphi 1.0, Testpoint
If you want to use the interface functions make sure to switch off
the Auto-Range function.
14.1 The following interface functions will be supported
DLL-
Code
Name / function
Operating
mode
Conduc-
tivity
Tempera-
ture
Resistance TDS Salinity
Channel 1 2 3 4 5
x x x x x 0 Read nominal value
x x x x x 3 Read system status
x *1 x x x 6 Read min. value
x *2 x x x 7 Read max. value
x 12 Read ID no.
x 174 Delete min. value
x 175 Delete max. value
x x x x x 176 Read min. measuring range
x x x x x 177 Read max. measuring range
x x x x x 178 Read unit for measuring range
x x x x x 179 Read decimal pt. for measuring range
x x x x x 180 Read measuring type
x 194 Set display unit
x 195 Set decimal point of display
x x x x x 199 Read meas. type in display
x x x x x 200 Read min. display range
x x x x x 201 Read max. display range
x x x x x 202 Read unit of display
x x x x x 204 Read decimal point of display
x 208 Read channel count
x 216 Read offset correction
x 217 Set offset correction
x 222 Read power-off delay
x 223 Set power-off delay
x 240 Reset instrument
x 254 Read program identification
*1 = temperature of the min conductivity value
*2 = temperature of the max conductivity value