User manual

H35.0.02.6C-09 Operating Manual GMH 3250 page 12 of 14
11 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
11.1 The following interface functions will be supported:
Channel
Dll-
Code
Name / function
1
2
3
x
x
x
0
Read nominal value
1) only when alarm is acti-
vated for referring channel
2) configuration flags:
50: 0 = logger off
1 = logger on
51: 0 = manual logger
1 = cyclic logger
3) only when logger function
= CYCL, data present and
logger stopped.
4) only when logger function
= CYCL
5) only when logger function
= CYCL and no data in
memory
6) only when logger function
= Stor, or logger function =
CYCL and no data in
memory.
7) only when logger is acti-
vated (CYCL or Stor)
8) only when logger function
= Stor and data in memory
9) only when no data in
memory
x
x
x
3
Read system status
x
x
x
6
Read min. value
x
x
x
7
Read max. value
x
12
Read ID-no.
1)
1)
1)
22
Read min. alarm limit
1)
1)
1)
23
Read max. alarm limit
2)
32
Read configuration flag
2)
160
Set configuration flag
x
174
Delete min. value
x
175
Delete max. value
9)
194
Set display unit
x
195
Set decimal point in display
x
x
x
199
Read meas. type in display
x
x
x
200
Read min. display range
x
x
x
201
Read max. display range
x
x
x
202
Read unit of display
x
x
x
204
Read decimal point of display
x
208
Read channel count
x
x
216
Read offset correction
9)
9)
217
Set offset correction
x
218
Read corr. factor (1000..1200)
9)
219
Set corr. factor (1000..1200)
3)
3)
3)
224
Read logger data (cyclic logger)
4)
225
Read logger cycle
5)
226
Set logger cycle
6)
227
Start logger recording
7)
228
Read count of logger data
7)
229
Read logger state
3)
231
Read real time clock
x
233
Set real-time clock
x
234
Set real-time clock
7)
236
Read logger memory size
X
240
Reset unit
X
254
Read program identification
8)
260
Read logger data (individual value
logger)