fs: improve and fix implementation

+ introduce WrapControlledBy and fix HasControlledBy

this in a new module before mercury/triton have been fixed

cfg/fs_cfg.py

@@ -4,34 +4,38 @@ Node('fs.psi.ch',
 )
 
 Mod('T',
-    'frappy_psi.picontrol.PI2',
+    'frappy_psi.furnace.PI2',
     'controlled Temperature on sample (2nd loop)',
-    input = 'T_sample',
-    output = 'T_reg',
+    value = Param(unit='degC'),
+    input_module = 'T_sam',
+    output_module = 'T_reg',
     relais = 'relais',
     p = 1.2,
     i = 0.005,
    )
 
 Mod('T_reg',
-    'frappy_psi.picontrol.PI',
+    'frappy_psi.furnace.PIctrl',
     'controlled Temperature on heater',
-    input = 'T_htr',
-    output = 't_out',
+    value = Param(unit='degC'),
+    input_module = 'T_htr',
+    output_module = 't_out',
+    output_min = 0,
+    output_max = 100,
     relais = 'relais',
     p = 1,
     i = 0.003,
    )
 
-Mod('p_reg',
-    'frappy_psi.picontrol.PI',
-    'controlled pressure',
-    input = 'p',
-    output = 'p_out',
-    relais = 'relais',
-    p = 1,
-    i = 0.005,
-   )
+#Mod('p_reg',
+#    'frappy_psi.furnace.PI',
+#    'controlled pressure',
+#    input_module = 'p',
+#    output_module = 't_out',
+#    relais = 'relais',
+#    p = 1,
+#    i = 0.005,
+#   )
 
 Mod('T_htr',
     'frappy_psi.ionopimax.CurrentInput',
@@ -39,11 +43,10 @@ Mod('T_htr',
     addr = 'ai4',
     valuerange = (0, 1372),
     value = Param(unit='degC'),
-    
    )
 
 
-Mod('T_sample',
+Mod('T_sam',
     'frappy_psi.ionopimax.CurrentInput',
     'sample temperature',
     addr = 'ai3',
@@ -58,10 +61,8 @@ Mod('T_extra',
     addr = 'ai2',
     valuerange = (0, 1372),
     value = Param(unit='degC'),
-
    )
 
-
 Mod('T_wall',
     'frappy_psi.ionopimax.VoltageInput',
     'furnace wall temperature',
@@ -86,7 +87,7 @@ Mod('htr',
 Mod('t_out',
     'frappy_psi.bkpower.Output',
     'heater output',
-    p_value = 'p_out',
+    # p_value = 'p_out',
     io = 'htr_io',
     maxvolt = 50,
     maxcurrent = 2,
@@ -104,13 +105,14 @@ Mod('interlocks',
     input = 'T_htr',
     wall_T = 'T_wall',
     htr_T = 'T_htr',
-    main_T = 'T_sample',
+    main_T = 'T_sam',
     extra_T = 'T_extra',
+    htr = 't_out',
     vacuum = 'p',
     relais = 'relais',
     control = 'T',
-    wall_limit = 100,
-    vacuum_limit = 0.1,
+    wall_limit = 60,
+    vacuum_limit = 0.001,
    )
 
 Mod('p',