mono energy directly used in ffzp info

csaxs_bec/bec_ipython_client/plugins/flomni/flomni_optics_mixin.py

@@ -205,7 +205,7 @@ class FlomniOpticsMixin:
 
         if mokev_val == -1:
             try:
-                mokev_val = dev.mokev.readback.get()
+                mokev_val = dev.ccm_energy.get().user_readback
             except:
                 print(
                     "Device mokev does not exist. You can specify the energy in keV as an argument instead."