User manual

H61.0.3X.6C-01 User’s Manual GMH 3181-… page 12 of 16
9 Output
The output can be used as serial interface (for USB 3100, USB 3100 N, GRS 3100 or GRS 3105
interface adapters) or as analog output (0-1V).
If none of both is needed, we suggest to switch the output off, because battery life then is extended.
9.1 Serial Interface
By means of the serial interface and a suitable electrically isolated interface adapter (USB 3100, USB 3100
N, GRS 3100 or GRS 3105) the device can be connected to a computer for data transfer.
With the GRS 3105 up to 5 devices of the GMH3xxx- series can be connected to one interface (see also
manual of GRS 3105). As a precondition the base addresses of all devices must not be identical, make sure
to configure the base addresses accordingly (refer menu point “Adr.” in chapter 6).
To avoid transmission errors, there are several security checks implemented e.g. CRC.
The following standard software packages are available:
 GSOFT3050: Operation and read out of logger function, data display in diagrams and tables
 GMHKonfig: Software for a comfortable editing of the device (e.g. Material selection…)
 EBS20M / 60M: 20-/60-channel software to display the measuring values
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 that can be
used by the most programming languages. Suitable for Windows XP™, Windows Vista™, Windows 7™
Programming examples Visual Basic 4.0™, Delphi 1.0™, Testpoint™
In addition to the operation at a PC the device can be operated with the GAM3000-device, to use the alarm
function for simple supervision and controlling applications. Just connect a GAM3000 to the interface,
activate the alarm function of the GMH and the relays output is operating.
The device has 3 channels:
1: current measuring value (base address)
2: min peak (p.r.t. chapter 8)
3: max peak (p.r.t. chapter 8)
Note: The measuring-/ alarm- and display range values read back from the interface are always in
the selected measurement unit (mbar, bar...)!
Supported functions:
Channel
Code
Name/Function
Channel
Code
Name/Function
1
2
3
1
2
3
x
x
x
0
Read measurement value
x
x
x
201
Read max display range
x
x
x
3
Read system state
x
x
x
202
Read display range - unit
x
6
Read min memory
x
x
x
204
Read display range – decimal point
x
7
Read max memory
x
208
Read # of channels
x
x
x
12
Read ID number
x
214
Read scale adjustment [%]
x
22
Read min alarm rail (AL. - AL.Lo)
x
216
Read offset adjustment
x
23
Read max alarm rail (AL. - AL.Hi)
x
220
Read offset adjustment
x
32
Read configuration flag
BitAlarmAn:1; BitAlarmHupe:3;
BitCorrectToSealevel: 32 *; BitPeakDetection:33;
BitFastFiltered:34; BitLoggerAn:50;
BitZyklischerLogger:51; BitStromsparlogger:52
x
221
Read altitude *
x
222
Set altitude *
x
223
Set power off time (Conf-P.oFF)
x
x
x
224
Logger: Read data of CYCL- Logger
x
102
Set min alarm rail (AL. - AL.Lo)
x
225
Logger: Read cycle time (LoGG - CYCL)
x
103
Set max alarm rail (AL. - AL.Hi)
x
226
Logger: set cycle time (LoGG - CYCL)
x
160
Set configuration flag (refer to 32)
x
227
Logger: start recording
x
174
Clear min memory
x
228
Logger: Read # of recordings made
x
175
Clear max memory
x
229
Logger: Read state
x
x
x
176
Read min measuring range
x
231
Logger: Read stop time
x
x
x
177
Read max measuring range
x
233
Read real time clock (CLOC)
x
x
x
178
Read measuring range – measuring unit
x
234
Set real time clock (CLOC)
x
x
x
179
Read measuring range – decimal point
x
236
Read logger memory size
x
x
x
180
Read kind of measuring of sensor
x
240
Reset
x
x
x
199
Read kind of measuring of display
x
254
Program version
x
x
x
200
Read min display range
x
260
Logger: read data of STOR Logger
* only available at GMH 3181-12