diff --git a/config/UNB2.yaml b/config/UNB2.yaml
index 5ac65152df724826fc6d31bd083adf5d8d630d2f..c40f968c0c30859f0b6627bb17b0b58ad2273181 100644
--- a/config/UNB2.yaml
+++ b/config/UNB2.yaml
@@ -136,7 +136,7 @@ variables:
      driver: GPIO
      mask: UNB2_mask
      width: 1
-     rw:  ro
+     rw:  hidden #ro
      dtype: boolean
      dim: 2
 
@@ -147,7 +147,7 @@ variables:
      devreg: FP_IO.GPIO
      bitoffset: 4
      width: 3
-     rw:  rw
+     rw:  hidden #rw
      dtype: uint8
      dim: 2
 
@@ -155,7 +155,7 @@ variables:
      driver: switch_UNB2
      devreg: 0x50.0
      width: 80  #10 characters
-     rw:  ro
+     rw:  hidden #ro
      dtype: string
      dim: 2
 
@@ -171,7 +171,7 @@ variables:
      driver: switch_PS
      devreg:  [0x2C.0x88,0x2C.0x8B,0x2C.0x8C,0x2C.0x8D]
      width: 16
-     rw:  ro
+     rw:  hidden #ro
      dtype: double
      scale: 1.2207e-4 #2^-13
      dim: 2
@@ -181,7 +181,7 @@ variables:
      driver: switch_PS
      devreg:  [0x2.0x8B,0x2.0x8C,0x2.0x8D,0x1.0x8B,0x1.0x8C,0x1.0x8D]
      width: 16
-     rw:  ro
+     rw:  hidden #ro
      dtype: double
      scale: 1.2207e-4 #2^-13
      dim: 2
@@ -191,7 +191,7 @@ variables:
      driver: switch_PS
      devreg:  [0xF.0x8B,0xF.0x8C,0xF.0x8D,0xE.0x8B,0xE.0x8C,0xE.0x8D]
      width: 16
-     rw:  ro
+     rw:  hidden #ro
      dtype: double
      scale: 1.2207e-4 #2^-13
      dim: 2
@@ -201,7 +201,7 @@ variables:
      driver: switch_PS
      devreg:  [0xD.0x8B,0xD.0x8C,0xD.0x8D]
      width: 16
-     rw:  ro
+     rw:  hidden #ro
      dtype: double
      scale: 1.2207e-4 #2^-13
      dim: 2
@@ -213,7 +213,7 @@ variables:
      driver: switch_DDR4
      devreg:  [0x18.0x5,0x19.0x5]
      width: 13
-     rw:  ro
+     rw:  hidden #ro
      dtype: double
      scale: 0.0625 
      dim: 16
@@ -223,7 +223,7 @@ variables:
      driver: switch_DDR4
      devreg:  [0x18.0x149,0x19.0x149]
      width: 160
-     rw:  ro
+     rw:  hidden #ro
      dtype: string
      dim: 16
      monitor: true
@@ -232,7 +232,7 @@ variables:
      driver: switch_FPGA_PS
      devreg:  [0x1.0x8B,0x1.0x8C,0x1.0x8D,0xD.0x8B,0xD.0x8C,0xD.0x8D]
      width: 16
-     rw:  ro
+     rw:  hidden #ro
      dtype: double
      scale: 1.2207e-4 #2^-13
      dim: 8
@@ -242,7 +242,7 @@ variables:
      driver: switch_FPGA_PS
      devreg:  [0xE.0x8B,0xE.0x8C,0xE.0x8D,0xF.0x8B,0xF.0x8C,0xF.0x8D]
      width: 16
-     rw:  ro
+     rw:  hidden #ro
      dtype: double
      scale: 1.2207e-4 #2^-13
      dim: 8
@@ -252,7 +252,7 @@ variables:
      driver: switch_FPGA_PS
      devreg:  [0x10.0x8B,0x10.0x8C,0x10.0x8D,0x11.0x8B,0x11.0x8C,0x11.0x8D]
      width: 16
-     rw:  ro
+     rw:  hidden #ro
      dtype: double
      scale: 1.2207e-4 #2^-13
      dim: 8
@@ -266,7 +266,7 @@ variables:
      driver: switch_QSFP
      devreg:  0x50.0x16
      width: 16
-     rw:  ro
+     rw:  hidden #ro
      dtype: double
      scale: 0.0625 #TBC
      dim: 48
@@ -277,7 +277,7 @@ variables:
      driver: switch_QSFP
      devreg:  0x50.0x03
      width: 8
-     rw:  ro
+     rw:  hidden #ro
      dtype: uint8
      dim: 48
      monitor: true
diff --git a/i2cserv/i2c_switch2.py b/i2cserv/i2c_switch2.py
index e86b47cff9fa12144433358100be54c006260fb0..0d91bd0ccf06260921c541eeac23c695870356f8 100644
--- a/i2cserv/i2c_switch2.py
+++ b/i2cserv/i2c_switch2.py
@@ -12,6 +12,7 @@ class i2c_switch2(i2c):
         self.channel2=0
         self.channel3=0
         logging.info("i2c switch2 at address %i,%i,%i" % (self.SWaddr1,self.SWaddr2,self.SWaddr3))
+        logging.warn("APSCT switch disabled for testing)
 
     def SetSW1(self,channelbit):
         channel=1<<(channelbit)
@@ -20,7 +21,8 @@ class i2c_switch2(i2c):
         self.channel1=channel
         self.channel2=0
         self.channel3=0
-        return self.i2csetget(self.SWaddr1,[channel])
+        return True; #testing without APSCT switch
+#        return self.i2csetget(self.SWaddr1,[channel])
 
     def SetSW2(self,channelbit):
         channel=1<<(channelbit)