Festo VTEM - Page 57

Festo — VTEM — 2021-05f
Function
57
Flow rates at valve (volumetric flow rate)
1)
Channel 25, addressed target 14
Index Meaning Value digit
Valve Working air port
122 5 2 0.1 rpm
124 4 0.1 rpm
126 2 (Low Byte, signed) 10 rpm
4 (High Byte, signed) 10 rpm
142 6 2 0.1 rpm
144 4 0.1 rpm
146 2 (Low Byte, signed) 10 rpm
4 (High Byte, signed) 10 rpm
162 7 2 0.1 rpm
164 4 0.1 rpm
166 2 (Low Byte, signed) 10 rpm
4 (High Byte, signed) 10 rpm
1) Volumetric flow rate assuming a density of air in standard conditions in accordance with ISO 8778/DIN 1945-1 (density 1.1850 kg/m³
of dry air at 20 °C) as a function of the current valve strokes and pressures at (1), (2) or (4) and (3). The pressure signals are used
unfiltered, so the return values will vary under the same conditions according to the noise of the pressure sensors.
Tab. 69: Flow rates at the valve
Proximity signals
Channel 25, addressed target 21
Index Meaning Value digit
181 Raw value from proximity switch at input module 1, port 0 1
182 Interpreted value from proximity switch at input module 1, port 0 1
183 Raw value from proximity switch at input module 1, port 1 1
184 Interpreted value from proximity switch at input module 1, port 1 1
185 Raw value from proximity switch at input module 1, port 2 1
186 Interpreted value from proximity switch at input module 1, port 2 1
187 Raw value from proximity switch at input module 1, port 3 1
188 Interpreted value from proximity switch at input module 1, port 3 1
189 Raw value from proximity switch at input module 1, port 4 1
190 Interpreted value from proximity switch at input module 1, port 4 1
191 Raw value from proximity switch at input module 1, port 5 1
192 Interpreted value from proximity switch at input module 1, port 5 1