WIKA GDT-20 Manual De Instrucciones página 42

5. Commissioning, operation
Gas proportions
The gas components and the respective proportions can be specified in percentage
values from 0 to 100 %. The constituents and their mixing ratio can be chosen arbitrarily.
The sum of all gas parameters must add up to exactly 100 %. In the event that a value is
EN
exceeded or fallen short of, the error bit 11 will be set in the error memory.
TAG number
Here, a transmitter name with up to 16 characters can be entered.
5.4.2.7 Status register
Register
00200
00201
00202
00203
00204
00221
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)
Pressure sensor failure
2
Temperature signal below the lower limit value (< -40 °C [-40 °F])
3
4 Temperature signal above the upper limit value (> 80 °C [176 °F])
5 Communication error pressure/ temperature sensor
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.
42
Function
Error memory
Error memory reset
Software reset
Resetting to standard
Start heating process
(only model GDHT-20)
Manual definition of the
heating interval (only
model GDHT-20)
communication error
®
WIKA operating instructions transmitter, models GDT-20 and GDHT-20
Value definition, triggering
the function
16 bit (see the following table)
Writing 0x0001
Writing 0x0001
Writing 0x0001
Writing 0x0001
Writing minutes
6
Writable
Read only
Yes
Yes
Yes
Yes
Yes
gas)