Configure abs_change for some attributes so they can be polled as required by the Metadata device

tangostationcontrol/tangostationcontrol/devices/base_device_classes/antennafield_device.py

@@ -467,6 +467,7 @@ class AF(LOFARDevice):
         dtype=((numpy.int64,),),
         max_dim_x=N_pol,
         max_dim_y=MAX_ANTENNA,
+        abs_change="1",
     )
     RCU_attenuator_dB_RW = MappedAttribute(
         "RCU_attenuator_dB_RW",
@@ -479,6 +480,7 @@ class AF(LOFARDevice):
         "RCU_DTH_freq_R",
         dtype=(numpy.int64,),
         max_dim_x=MAX_ANTENNA,
+        abs_change="1",
     )
     RCU_DTH_freq_RW = MappedAttribute(
         "RCU_DTH_freq_RW",
@@ -520,6 +522,7 @@ class AF(LOFARDevice):
         dtype=((numpy.int64,),),
         max_dim_x=2,
         max_dim_y=MAX_ANTENNA,
+        abs_change="1",
     )
     RCU_PCB_version_R = MappedAttribute(
         "RCU_PCB_version_R",

tangostationcontrol/tangostationcontrol/devices/sdp/digitalbeam.py

@@ -102,6 +102,7 @@ class DigitalBeam(BeamDevice):
         max_dim_x=N_beamlets_ctrl,
         access=AttrWriteType.READ_WRITE,
         fisallowed="is_attribute_access_allowed",
+        abs_change="1",
     )
 
     def read_subband_select_RW(self):