diff --git a/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.c b/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.c
index 71a089ffe..3f4ff6c8f 100755
--- a/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.c
+++ b/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.c
@@ -852,8 +852,7 @@ int setDACRegister(int idac, int val, int imod) {
 }
 
 
-float getTemperature(int tempSensor, int imod)
-{
+float getTemperature(int tempSensor, int imod){
   float val;
   char cTempSensor[2][100]={"ADCs/ASICs","VRs/FPGAs"}; 
   imod=0;//ignoring more than 1 mod for now
@@ -863,31 +862,59 @@ float getTemperature(int tempSensor, int imod)
 #ifdef VERBOSE
   printf("Getting Temperature of module:%d for the %s\n",imod,cTempSensor[tempSensor]);
 #endif
-  bus_w(TEMP_SPI_IN,(T1_CLK_BIT)|(T1_CS_BIT)|(T2_CLK_BIT)|(T2_CS_BIT));//standby
-  bus_w(TEMP_SPI_IN,(T1_CLK_BIT)&~(T1_CS_BIT)|(T2_CLK_BIT));//high clk low cs
+  bus_w(TEMP_IN_REG,(T1_CLK_BIT)|(T1_CS_BIT)|(T2_CLK_BIT)|(T2_CS_BIT));//standby
+  bus_w(TEMP_IN_REG,(T1_CLK_BIT)&~(T1_CS_BIT)|(T2_CLK_BIT));//high clk low cs
 
   for(k=0;k<2;k++){
     for(i=0;i<times;i++) {
       //repeats is number of register writes for delay
       for(j=0;j<repeats;j++)
-	bus_w(TEMP_SPI_IN,~(T1_CLK_BIT)&~(T1_CS_BIT)&~(T2_CLK_BIT)&~(T2_CS_BIT));//low clk low cs
+	bus_w(TEMP_IN_REG,~(T1_CLK_BIT)&~(T1_CS_BIT)&~(T2_CLK_BIT)&~(T2_CS_BIT));//low clk low cs
       for(j=0;j<repeats;j++)
-	bus_w(TEMP_SPI_IN,(T1_CLK_BIT)&~(T1_CS_BIT)|(T2_CLK_BIT));//high clk low cs
+	bus_w(TEMP_IN_REG,(T1_CLK_BIT)&~(T1_CS_BIT)|(T2_CLK_BIT));//high clk low cs
 
       if(times==11)//only the first time
-	tempVal= (tempVal<<1) + (bus_r(TEMP_SPI_OUT) & (1<<tempSensor));
+	tempVal= (tempVal<<1) + (bus_r(TEMP_OUT_REG) & (1<<tempSensor));
     }
     times=8;
   }
-  bus_w(TEMP_SPI_IN,(T1_CLK_BIT)|(T1_CS_BIT)|(T2_CLK_BIT)|(T2_CS_BIT));//standby
+  bus_w(TEMP_IN_REG,(T1_CLK_BIT)|(T1_CS_BIT)|(T2_CLK_BIT)|(T2_CS_BIT));//standby
   val=((float)tempVal)/4.0;	
 
-#ifdef VERBOSE//read time from start needed??
+#ifdef VERBOSE
    printf("Temperature of module:%d for the %s is %.2fC\n",imod,cTempSensor[tempSensor],val);
 #endif
  return val;
 }
 
+int getHighVoltage(int val, int imod){
+#ifdef VERBOSE
+  printf("Getting High Voltage of module:%d\n",imod);
+#endif
+  volatile u_int32_t addr=HV_REG;
+  int input []={  0, 90,110,120,150,180,200};
+  int value1[]={0x0,0x0,0x2,0x4,0x6,0x8,0xA};
+  int value2[]={0x0,0x1,0x3,0x5,0x7,0x9,0xB};
+  //changing anything here should also be changed in 
+  //server_funcs.c to check if wrongly written
+  switch(val){
+  case -1:  break;
+  case 0:   bus_w(addr,0x0); break;
+  case 90:  bus_w(addr,0x0); bus_w(addr,0x1);  break;
+  case 110: bus_w(addr,0x2); bus_w(addr,0x3);  break;
+  case 120: bus_w(addr,0x4); bus_w(addr,0x5);  break;
+  case 150: bus_w(addr,0x6); bus_w(addr,0x7);  break;
+  case 180: bus_w(addr,0x8); bus_w(addr,0x9);  break;
+  case 200: bus_w(addr,0xA); bus_w(addr,0xB);  break;
+  default : printf("Not a valid voltage\n"); return -1; break;
+  }
+  val=bus_r(addr);
+#ifdef VERBOSE
+  printf("High Voltage of module:%d is %d\n",imod,val);
+#endif
+  return val;
+}
+
 
 u_int32_t runBusy(void) {
   return bus_r(STATUS_REG)&RUN_BUSY_BIT;
diff --git a/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.h b/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.h
index 81fa3ff41..babf7358b 100755
--- a/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.h
+++ b/slsDetectorSoftware/gotthardDetectorServer/firmware_funcs.h
@@ -47,6 +47,7 @@ int setContinousReadOut(int d);
 int setDACRegister(int idac, int val, int imod);
 
 float getTemperature(int tempSensor, int imod);
+int getHighVoltage(int val, int imod);
 
 u_int64_t getMcsNumber();
 u_int32_t getMcsVersion();
diff --git a/slsDetectorSoftware/gotthardDetectorServer/mcb_funcs.c b/slsDetectorSoftware/gotthardDetectorServer/mcb_funcs.c
index 6399ea283..c312c3571 100755
--- a/slsDetectorSoftware/gotthardDetectorServer/mcb_funcs.c
+++ b/slsDetectorSoftware/gotthardDetectorServer/mcb_funcs.c
@@ -587,6 +587,7 @@ float initDACbyIndexDACU(int ind, int val, int imod) {
 	
       if (setDACRegister(ind,  -1, im)!=setDACRegister(ind,  -1, 0)) {
 #ifdef VERBOSE
+
       printf("mod %d returning -1\n",im);
 #endif
 	return -1;
@@ -727,7 +728,6 @@ float getDACbyIndexDACU(int ind,  int imod) {
 }
 
 
-//changed arguments by dhanya
 int initDAC(int dac_addr, int value, int imod) {
   int i;
 #ifdef VERBOSE
@@ -741,6 +741,43 @@ int initDAC(int dac_addr, int value, int imod) {
   return 0;
 }
 
+float getTemperatureByModule(int tempSensor, int imod)
+{
+  int im;
+  //for the particular module
+  if (imod>=0 && imod<nModX) { 
+    return getTemperature(tempSensor,imod);
+  }
+  else{
+    //checks if all modules have the same value(ALLMOD)
+    for (im=1; im<nModX; im++) {
+      if (getTemperature(tempSensor,im)!=getTemperature(tempSensor,0)) {
+	return -1;
+      }
+    }
+    return getTemperature(tempSensor,0);
+  }
+}
+
+
+int getHighVoltageByModule(int val, int imod)
+{
+  int im;
+  //for the particular module
+  if (imod>=0 && imod<nModX) { 
+    return getHighVoltage(val,imod);
+  }
+  else{
+    //checks if all modules have the same value(ALLMOD)
+    for (im=1; im<nModX; im++) {
+      if (getHighVoltage(val,im)!=getHighVoltage(val,0)) {
+	return -1;
+      }
+    }
+    return getHighVoltage(val,0);
+  }
+}
+
 
 void showbits(int h)
 {
diff --git a/slsDetectorSoftware/gotthardDetectorServer/mcb_funcs.h b/slsDetectorSoftware/gotthardDetectorServer/mcb_funcs.h
index d3f0187bf..3c7d60896 100755
--- a/slsDetectorSoftware/gotthardDetectorServer/mcb_funcs.h
+++ b/slsDetectorSoftware/gotthardDetectorServer/mcb_funcs.h
@@ -25,14 +25,14 @@
 
 
 // DAC definitions
-enum {VREF_DS, VCASCN_PB, VCASCP_PB, VOUT_CM, VCASC_OUT, VIN_CM, VREF_COMP, IB_TESTC};
+enum {VREF_DS, VCASCN_PB, VCASCP_PB, VOUT_CM, VCASC_OUT, VIN_CM, VREF_COMP, IB_TESTC, };
 
 /* DAC adresses */
 #define DACCS   {0,0,1,1,2,2,3,3,4,4,5,5,6,6}
 #define DACADDR {0,1,0,1,0,1,0,1,0,1,0,1,0,1}
 
-//Temp definitions
-enum {TEMP_ADC, TEMP_FPGA};
+//Temp/HIGH VOLTAGE Definitions
+enum {TEMP_ADC, TEMP_FPGA, HIGH_VOLTAGE};
 
 //dynamic range
 #define MAX5523
@@ -119,6 +119,11 @@ float initDACbyIndexDACU(int ind,int val, int imod);
 float getDACbyIndexDACU(int ind,  int imod);
 int getThresholdEnergy();
 int setThresholdEnergy(int ethr);
+
+/* Temp/HV routines*/
+float getTemperatureByModule(int tempSensor, int imod);
+int getHighVoltageByModule(int val, int imod);
+
 /* Initialization*/
 int initChannel(int ft,int cae, int ae, int coe, int ocoe, int counts,int imod );
 int initChannelbyNumber(sls_detector_channel myChan);
diff --git a/slsDetectorSoftware/gotthardDetectorServer/registers_g.h b/slsDetectorSoftware/gotthardDetectorServer/registers_g.h
index d335c833b..0141e2a16 100755
--- a/slsDetectorSoftware/gotthardDetectorServer/registers_g.h
+++ b/slsDetectorSoftware/gotthardDetectorServer/registers_g.h
@@ -8,21 +8,24 @@
 
 
 /* registers defined in FPGA */
+#define GAIN_REG         0x10<<11
+#define DAQ_REG          0x1b<<11
+
+#define DUMMY_REG        0x13<<11
 #define FIX_PATT_REG     0x45<<11
 #define FPGA_VERSION_REG 0x47<<11
-#define DUMMY_REG        0x13<<11
 
 #define CONTROL_REG      0x5d<<11
 #define STATUS_REG       0x5e<<11
 #define CONFIG_REG       0x5f<<11
 #define EXT_SIGNAL_REG   0x6a<<11
 
-#define GAIN_REG         0x10<<11
-#define DAQ_REG          0x1b<<11
-
 //temperature
-#define TEMP_SPI_IN      0x81<<11
-#define TEMP_SPI_OUT     0x82<<11
+#define TEMP_IN_REG      0x81<<11
+#define TEMP_OUT_REG     0x82<<11
+
+//HV
+#define HV_REG           0x93<<11
 
 //not used so far
 #define SPEED_REG        0x006000
diff --git a/slsDetectorSoftware/gotthardDetectorServer/server_funcs.c b/slsDetectorSoftware/gotthardDetectorServer/server_funcs.c
index e0bffac93..4363cc081 100755
--- a/slsDetectorSoftware/gotthardDetectorServer/server_funcs.c
+++ b/slsDetectorSoftware/gotthardDetectorServer/server_funcs.c
@@ -783,7 +783,7 @@ int read_register(int fnum) {
 }
 
 int set_dac(int fnum) {
-
+  //everything in here does for all mods
   float retval;
   int ret=OK;
   int arg[2];
@@ -794,7 +794,7 @@ int set_dac(int fnum) {
   int idac=0;
   int itemp=-1;
 
-  sprintf(mess,"Can't set DAC/POT/TEMP\n");
+  sprintf(mess,"Can't set DAC/TEMP/HV\n");
 
 
   n = receiveDataOnly(arg,sizeof(arg));
@@ -812,7 +812,7 @@ int set_dac(int fnum) {
   }
 
 #ifdef VERBOSE
-  printf("Setting DAC/POT/TEMP %d of module %d to %f V\n", ind, imod, val);
+  printf("Setting DAC/TEMP/HV %d of module %d to %f V\n", ind, imod, val);
 #endif 
 
   if (imod>=getNModBoard())
@@ -852,51 +852,52 @@ int set_dac(int fnum) {
   case TEMPERATURE_FPGA:
     itemp=TEMP_FPGA;
     break;
+  case HV_POT:
+    itemp=HIGH_VOLTAGE;
+    break;
   default:
-    printf("Unknown DAC/POT/TEMP index %d\n",ind);
-    sprintf(mess,"Unknown DAC/POT/TEMP index %d\n",ind);
+    printf("Unknown DAC/TEMP/HV index %d\n",ind);
+    sprintf(mess,"Unknown DAC/TEMP/HV index %d\n",ind);
     ret=FAIL;
   }
  
   if (ret==OK) {
-    if(itemp!=-1) {
-      if (imod>=0 && imod<nModX)	
-	retval=getTemperature(itemp,imod);
-      else
-	//get only the first mods temp, but dunno when this is used
-	retval=getTemperature(itemp,0);
-    }
-    else
+    //dac
+    if(itemp==-1)
       retval=initDACbyIndexDACU(idac,val,imod);
+    else
+      {	//HV
+	if(itemp==HIGH_VOLTAGE)
+	  retval=getHighVoltageByModule(val,imod);
+	else//Temp
+	  retval=getTemperatureByModule(itemp,imod);
+      }
   }
 #endif
-
 #ifdef VERBOSE
-  printf("DAC/POT/TEMP set to %f V\n",  retval);
+  printf("DAC/TEMP/HV set to %f V\n",  retval);
 #endif  
-  if (retval==val || val==-1)
+  ret=FAIL;
+  if((itemp==HIGH_VOLTAGE)&&(retval!=-1))
+    ret =OK;
+  else if (retval==val || val==-1)
     ret=OK;
-  else {
-    ret=FAIL;
-    printf("Setting dac/pot %d of module %d: wrote %f but read %f\n", ind, imod, val, retval);
-  }
-
-
-  /* send answer */
-  /* send OK/failed */
-  n = sendDataOnly(&ret,sizeof(ret));
-  if (ret==OK) {
-    /* send return argument */
-    n += sendDataOnly(&retval,sizeof(retval));
-  } else {
-    n += sendDataOnly(mess,sizeof(mess));
-  }
-
-  /* Maybe this is done inside the initialization funcs */
-  //detectorDacs[imod][ind]=val;
-  /*return ok/fail*/
-  return ret; 
+   
+  if(ret==FAIL)
+    printf("Setting dac/hv %d of module %d: wrote %f but read %f\n", ind, imod, val, retval);
+    
 
+/* send answer */
+/* send OK/failed */
+n = sendDataOnly(&ret,sizeof(ret));
+if (ret==OK) {
+  /* send return argument */
+  n += sendDataOnly(&retval,sizeof(retval));
+ } else {
+  n += sendDataOnly(mess,sizeof(mess));
+ }
+/*return ok/fail*/
+return ret; 
 }