WIKA GDT-20 Mode D'emploi page 43

5. Commissioning, operation
5.4.2.7 Status register
Address Register
00200 00201
00201 00202
00202 00203
00203 00204
00204 00205
00221 00222
After a restart (voltage supply was interrupted), the error memory is reset. Writing 0x0001 in
register address 00201 has the same effect.
Description of the error memory
Bit Description
0 Pressure signal below the lower limit value (< 0 bar)
1 Pressure signal above the upper limit value (> 16 bar)
2 Pressure sensor failure
3 Temperature signal below the lower limit value (< -40 °C [-40 °F])
4 Temperature signal above the upper limit value (> 80 °C [176 °F])
Communication error pressure/ temperature sensor
5
6 Gas density below the lower limit value (liquefaction of SF
7 Gas density above the upper limit value (> 80 g/l)
8 Failure of the humidity sensor (only model GDHT-20)
9 Communication error of humidity sensor (only model GDHT-20)
10 Recurring Modbus
11 Inadmissible mixing ratio, sum of all gas proportions ≠ 100 %
Example: 0x0082
Bit 1 and 7 are set. The upper limit values for pressure and gas density are exceeded.
Software reset
Writing 0x0001 in register 202 causes a software reset. After this process all changed
parameters take effect (e.g. change of address).
WIKA operating instructions transmitter, models GDT-20 and GDHT-20
Function
Error memory
Error memory reset
Software reset
Resetting to standard
Start heating
process (only model
GDHT-20)
Manual definiti-
on of the heating
interval (only model
GDHT-20)
communication error
®
Value definition, Writable
triggering the
function
16 bit (see the Read only
following table)
Writing 0x0001 Yes
Writing 0x0001 Yes
Writing 0x0001
Writing 0x0001
Writing minutes
gas)
6
EN
Yes
Yes
Yes
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