diff --git a/config/UNB2TR.yaml b/config/UNB2TR.yaml
index d3e1936f520491393e5dd0186247e5567546191f..3e18a10f206e2a30473fc0fa728fdab4904e53d5 100644
--- a/config/UNB2TR.yaml
+++ b/config/UNB2TR.yaml
@@ -506,4 +506,5 @@ methods:
     mask: UNB2_mask
     instructions:
      - UNB2_PWR_on: 1 #inverted
+     - WAIT: 200         
 #     - UNB2_Front_Panel_LED_colour: 2
diff --git a/i2cserv/i2c_array2.py b/i2cserv/i2c_array2.py
index 02f656afcbe8389c46b5c4d3876526b36d8ba8bb..14468d26e02e9711b731a471ffba085e896f6c9a 100644
--- a/i2cserv/i2c_array2.py
+++ b/i2cserv/i2c_array2.py
@@ -19,6 +19,7 @@ class i2c_array2(i2c_array):
         if self.Nswitch>3: self.Nswitch=3;
         self.RCU_Switch1=range(pars[0],pars[1]+1);
         self.N=len(sw1)
+        self.RCUorder=range(self.N)
         if len(sw2)>0: self.N*=len(sw2)
         if len(sw3)>0: self.N*=len(sw3)
         self.I2Cmask=[0]*self.N