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<strong>GFC</strong> <strong>300</strong><br />
MODBUS PROTOCOL 6<br />
Modbus protocol<br />
address<br />
Description and settings Type Number of registers<br />
1st<br />
2nd<br />
<strong>300</strong>00 0 Volume flow float 2<br />
<strong>300</strong>02 2 Corrected volume flow (gas only) float 2<br />
Enthalpy flow (steam only)<br />
<strong>300</strong>04 4 Mass flow float 2<br />
<strong>300</strong>06 6 Molar mass (gas only) float 2<br />
Specific enthalpy (steam only)<br />
<strong>300</strong>08 8 Not used, returns zero (gas only) float 2<br />
Density (steam only)<br />
<strong>300</strong>10 10 Flow speed float 2<br />
<strong>300</strong>12 12 Velocity of sound float 2<br />
<strong>300</strong>14 14 Gain float 2<br />
<strong>300</strong>16 16 Diagnostics 1<br />
float 2<br />
value 2436.32<br />
1 = none<br />
2 = velocity of sound 1<br />
3 = gain 1<br />
4 = SNR 1<br />
<strong>300</strong>18 18 Diagnostics 2<br />
float 2<br />
value 2437.32<br />
1 = none<br />
2 = velocity of sound 2<br />
3 = gain 2<br />
4 = SNR 2<br />
<strong>300</strong>20 20 Diagnostics 3<br />
float 2<br />
value 2438.32<br />
1 = none<br />
2 = velocity of sound 3<br />
3 = gain 3<br />
4 = SNR 3<br />
<strong>300</strong>22 22 Temperature of the medium<br />
float 2<br />
(only with appropriate Current Input)<br />
<strong>300</strong>24 24 Pressure of the medium<br />
float 2<br />
(only with appropriate Current Input)<br />
<strong>300</strong>26 26 Operating time float 2<br />
<strong>300</strong>28 28 counter 1 double float 4<br />
<strong>300</strong>32 32 Counter 2 double float 4<br />
<strong>300</strong>36 36 Counter 3 (IO2 only) double float 4<br />
<strong>300</strong>40 40 Long status sensor byte [4] 2<br />
<strong>300</strong>42 42 Long status device byte [4] 2<br />
03/2012 - 7312402100 - AD Modbus <strong>GFC</strong> <strong>300</strong> R01 en<br />
www.krohne.com<br />
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