Instructions

H49.0.02.6C-06 Operating Manual GMH 3750 Page 10 of 16
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Supported interface functions with 'GMH3000.DLL' :
code name / function code name / function
0 Read nominal values 201 Read max. display range
3 Read system status 202 Read unit of display
6 Read min. values 204 Read decimal point of display
7 Read max values 208 Read channel count
12 Read ID-no 214 Read scale correction
22 Read min. alarm rail 215 Set scale correction
23 Read max. alarm rail 216 Read zero displacement
217 Set zero displacement
222 Read power – off time
32 Read configuration flag
Alarm function: 1, Alarm horn: 3
BitLoggerOn: 50, BitCyclicLogger: 51
223 Set power – off time
102 Set min. alarm rail 224 Logger: read data cyclic logger
103 Set max. alarm rail 225 Logger: read cycle time (LoGG - CYCL)
160 Set configuration flag (see 32) 226 Logger: set cycle time (LoGG - CYCL)
174 Delete min. value 227 Logger: start recording
175 Delete max. value 228 Logger: read # of data
176 Read min. measuring range 229 Logger: read status
177 Read max. measuring range 231 Logger: read stop time
178 Read measuring range unit 233 Read real time clock (CLOC)
179 Read measuring range decimal point 234 Set real time clock (CLOC)
180 Read measuring type 236 Read logger memory size
194 Set display unit 240 Reset
199 Read measuring type in display 254 Read program identification
200 Read min. display range 260 Logger: read data manual logger
Note: The measuring and display range values read via interface are always in the selected
display unit (°C/°F)!
9.7 Alarm („AL.“)
There are three possible settings:
Alarm off (AL. oFF), on with horn sound (AL. on), on without horn sound (AL. no.So).
Following conditions will display an alarm, when the function is activated (on or no.So):
- Value is below lower (AL. Lo) or above upper alarm rail (AL.Hi).
- Sensor error
- Low battery (bAt)
- Err.7: System error (always with sound)
In case of an alarm and when polling the interface the “prio”-flag is set in the returned message.
9.8 Real Time Clock („CLOC“)
The real time clock is used for the logger function: Recorded values are also containing the point of
time, when they were measured. Please check the settings when necessary.
If the battery was replaced the referring menu ‚CLOC‘ will automatically be started