diff --git a/pypcc/config/RECVTR_HB.yaml b/pypcc/config/RECVTR_HB.yaml
index 7a764b57784056eb4569a4533d56ad6f6df93a72..63f64a9597a35b9e74ec7f1f7b03cbc52f573f06 100644
--- a/pypcc/config/RECVTR_HB.yaml
+++ b/pypcc/config/RECVTR_HB.yaml
@@ -358,7 +358,7 @@ variables:
      dim: 32
      monitor: true
      read_parallel: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_3V3
      description: RCU 3.3V voltage (V)
@@ -371,7 +371,7 @@ variables:
      dim: 32
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_1V8
      description: RCU 1.8V voltage (V)
@@ -384,7 +384,7 @@ variables:
      dim: 32
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_2V5
      description: RCU 2.5V voltage (V)
@@ -397,7 +397,7 @@ variables:
      dim: 32
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_ANT_VOUT
      description: Voltage on antenna output of RCU (V). Controlled by ANT_PWR_ON.
@@ -411,7 +411,7 @@ variables:
      dim2: [3,32]
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_ANT_VIN
      description: RCU antenna voltage before switch (V)
@@ -425,7 +425,7 @@ variables:
      dim2: [3,32]
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_ANT_IOUT
      description: Current drawn on antenna output of RCU (A). 15mA offset due to LED on RCU
@@ -439,7 +439,7 @@ variables:
      dim2: [3,32]
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_DIGITAL_on
      description: RCU digital power enable. Controlled by calling RCU_on/RCU_off
diff --git a/pypcc/config/RECVTR_LB.yaml b/pypcc/config/RECVTR_LB.yaml
index b753491106bc0a5943cec094a228dea4e0640077..d97593c799dd085a3eea407729dd9c80bd2b4bae 100644
--- a/pypcc/config/RECVTR_LB.yaml
+++ b/pypcc/config/RECVTR_LB.yaml
@@ -317,7 +317,7 @@ variables:
      dim: 32
      monitor: true
      read_parallel: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_3V3
      description: RCU 3.3V voltage (V)
@@ -330,7 +330,7 @@ variables:
      dim: 32
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_1V8
      description: RCU 1.8V voltage (V)
@@ -343,7 +343,7 @@ variables:
      dim: 32
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_2V5
      description: RCU 2.5V voltage (V)
@@ -356,7 +356,7 @@ variables:
      dim: 32
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_ANT_VOUT
      description: Voltage on antenna output of RCU (V). Controlled by ANT_PWR_ON.
@@ -370,7 +370,7 @@ variables:
      dim2: [3,32]
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_ANT_VIN
      description: RCU antenna voltage before switch (V)
@@ -384,7 +384,7 @@ variables:
      dim2: [3,32]
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_ANT_IOUT
      description: Current drawn on antenna output of RCU (A). 15mA offset due to LED on RCU
@@ -398,7 +398,7 @@ variables:
      dim2: [3,32]
      read_parallel: true
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_DIGITAL_on
      description: RCU digital power enable. Controlled by calling RCU_on/RCU_off
@@ -422,7 +422,7 @@ variables:
      dtype: boolean
      dim: 32
      monitor: true
-     mask: RECVTR_I2C_error
+#     mask: RECVTR_I2C_error
 
    - name: RCU_PWR_ANALOG_on
      description: RCU analog power enable. Controlled by RCU_on/off
diff --git a/pypcc/opcuaserv/yamlreader.py b/pypcc/opcuaserv/yamlreader.py
index f82d969d5948a9d771e225a9b78c56581c2707a5..5c9183bdbb2fa8e9c9ba4bf2857a128131bbf656 100644
--- a/pypcc/opcuaserv/yamlreader.py
+++ b/pypcc/opcuaserv/yamlreader.py
@@ -191,6 +191,8 @@ class yamlreader(yamlconfig):
         mask=Find(self.conf['variables'],'name',mask)
         if not(mask): continue;
         mask=mask.get('OPCR',None)
+        if (mask is None):
+           mask=mask.get('OPCW',None)
         if (mask==None): continue;
         v['maskOPC']=mask
      if not self.monitorvarid is None:
@@ -319,6 +321,8 @@ class yamlreader(yamlconfig):
           v=self.conf['variables'][self.monitorvarcnt];
           if v.get('monitor'):
                mask=(v['maskOPC'].get_value() if v.get('maskOPC') else [])
+               if isinstance(mask,list) and (len(mask)>0) and isinstance(mask[0],int):
+                   mask=[m==0 for m in mask]
 #               print("monitor",v['name'],mask)
 #               self.SetBusy()
                self.lastRecv=time.time()