diff --git a/slsDetectorServers/gotthard2DetectorServer/CMakeLists.txt b/slsDetectorServers/gotthard2DetectorServer/CMakeLists.txt
index e4167e365..d0d55515d 100644
--- a/slsDetectorServers/gotthard2DetectorServer/CMakeLists.txt
+++ b/slsDetectorServers/gotthard2DetectorServer/CMakeLists.txt
@@ -4,7 +4,8 @@ add_executable(gotthard2DetectorServer_virtual
     ../slsDetectorServer/src/slsDetectorServer_funcs.c
     ../slsDetectorServer/src/communication_funcs.c
     ../slsDetectorServer/src/blackfin.c    
-    ../slsDetectorServer/src/communication_funcs_UDP.c    
+    ../slsDetectorServer/src/communication_funcs_UDP.c  
+    ../slsDetectorServer/src/DAC6571.c  
 )
 
 include_directories(
diff --git a/slsDetectorServers/gotthard2DetectorServer/Makefile b/slsDetectorServers/gotthard2DetectorServer/Makefile
index 537b14987..1dcd25e1f 100755
--- a/slsDetectorServers/gotthard2DetectorServer/Makefile
+++ b/slsDetectorServers/gotthard2DetectorServer/Makefile
@@ -12,7 +12,7 @@ DESTDIR		?= 	bin
 INSTMODE	= 	0777
 
 SRCS	=	slsDetectorFunctionList.c 
-SRCS	+=	$(main_src)slsDetectorServer.c $(main_src)slsDetectorServer_funcs.c $(main_src)communication_funcs.c $(main_src)nios.c 
+SRCS	+=	$(main_src)slsDetectorServer.c $(main_src)slsDetectorServer_funcs.c $(main_src)communication_funcs.c $(main_src)nios.c $(main_src)common.c $(main_src)DAC6571.c
 
 OBJS 	= 	$(SRCS:.c=.o) 
  
diff --git a/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServer_developer b/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServer_developer
index b9a5db12c..98e650c11 100755
Binary files a/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServer_developer and b/slsDetectorServers/gotthard2DetectorServer/bin/gotthard2DetectorServer_developer differ
diff --git a/slsDetectorServers/gotthard2DetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/gotthard2DetectorServer/slsDetectorFunctionList.c
index 3142b5dca..b5326be46 100644
--- a/slsDetectorServers/gotthard2DetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/gotthard2DetectorServer/slsDetectorFunctionList.c
@@ -2,6 +2,8 @@
 #include "versionAPI.h"
 #include "clogger.h"
 #include "blackfin.h"
+#include "DAC6571.h"
+#include "common.h"
 #ifdef VIRTUAL
 #include "communication_funcs_UDP.h"
 #endif
@@ -29,6 +31,7 @@ int virtual_status = 0;
 int virtual_stop = 0;
 #endif
 
+int highvoltage = 0;
 
 
 int isFirmwareCheckDone() {
@@ -57,6 +60,8 @@ void basictests() {
     firmware_check_done = 1;
     return;
 #else
+	// faking it
+    firmware_check_done = 1;
 
 	
 #endif
@@ -173,6 +178,10 @@ void initStopServer() {
 void setupDetector() {
     FILE_LOG(logINFO, ("This Server is for 1 Gotthard2 module \n")); 
 
+	// hv
+    DAC6571_SetDefines(HV_SOFT_MAX_VOLTAGE, HV_HARD_MAX_VOLTAGE, HV_DRIVER_FILE_NAME);
+    setHighVoltage(DEFAULT_HIGH_VOLTAGE);
+
 	//Initialization of acquistion parameters
 	setTimer(FRAME_NUMBER, DEFAULT_NUM_FRAMES);
 	setTimer(CYCLES_NUMBER, DEFAULT_NUM_CYCLES);
@@ -286,6 +295,24 @@ int64_t getTimeLeft(enum timerIndex ind){
 }
 
 
+
+int setHighVoltage(int val){
+#ifdef VIRTUAL
+    if (val >= 0)
+        highvoltage = val;
+    return highvoltage;
+#endif
+
+	// setting hv
+	if (val >= 0) {
+	    FILE_LOG(logINFO, ("Setting High voltage: %d V", val));
+	    DAC6571_Set(val);
+	    highvoltage = val;
+	}
+	return highvoltage;
+}
+
+
 int configureMAC(uint32_t destip, uint64_t destmac, uint64_t sourcemac, uint32_t sourceip, uint32_t udpport) {
 #ifdef VIRTUAL
 	char cDestIp[MAX_STR_LENGTH];
diff --git a/slsDetectorServers/gotthard2DetectorServer/slsDetectorServer_defs.h b/slsDetectorServers/gotthard2DetectorServer/slsDetectorServer_defs.h
index 8d735a80b..c36022c38 100644
--- a/slsDetectorServers/gotthard2DetectorServer/slsDetectorServer_defs.h
+++ b/slsDetectorServers/gotthard2DetectorServer/slsDetectorServer_defs.h
@@ -5,14 +5,22 @@
 
 #define CTRL_SRVR_INIT_TIME_US      (300 * 1000)
 
+
+/* Enums */
+enum DACINDEX				{DAC0};
+
 /* Hardware Definitions */
 #define NCHAN 						(128)
 #define NCHIP 						(10)
 #define NDAC 						(16)
 #define TEMP_CLK					(20)	/* MHz */
+#define HV_SOFT_MAX_VOLTAGE         (200)
+#define HV_HARD_MAX_VOLTAGE         (530)
+#define HV_DRIVER_FILE_NAME         ("/root/devlinks/hvdac")
 
 /** Default Parameters */
 #define DEFAULT_NUM_FRAMES			(1)
 #define DEFAULT_NUM_CYCLES			(1)
 #define DEFAULT_EXPTIME				(1 * 1000 * 1000)	        // 1 ms
-#define DEFAULT_PERIOD				(1 * 1000 * 1000 * 1000)	// 1 s
\ No newline at end of file
+#define DEFAULT_PERIOD				(1 * 1000 * 1000 * 1000)	// 1 s
+#define DEFAULT_HIGH_VOLTAGE		(0)
\ No newline at end of file
diff --git a/slsDetectorServers/slsDetectorServer/include/slsDetectorFunctionList.h b/slsDetectorServers/slsDetectorServer/include/slsDetectorFunctionList.h
index 5ebf24efc..ce91e0f3f 100755
--- a/slsDetectorServers/slsDetectorServer/include/slsDetectorFunctionList.h
+++ b/slsDetectorServers/slsDetectorServer/include/slsDetectorFunctionList.h
@@ -215,7 +215,7 @@ void        powerOff();
 int 		getADC(enum ADCINDEX ind);
 #endif
 #endif
-#if !defined(MYTHEN3D) && !defined(GOTTHARD2D)
+#if !defined(MYTHEN3D) 
 int 		setHighVoltage(int val);
 #endif
 
diff --git a/slsDetectorServers/slsDetectorServer/src/DAC6571.c b/slsDetectorServers/slsDetectorServer/src/DAC6571.c
index cce56168b..5ffd1454d 100755
--- a/slsDetectorServers/slsDetectorServer/src/DAC6571.c
+++ b/slsDetectorServers/slsDetectorServer/src/DAC6571.c
@@ -3,6 +3,8 @@
 #include "common.h"
 #include "sls_detector_defs.h"
 
+#include "string.h"
+
 /* DAC6571 HV DEFINES */
 #define DAC6571_MIN_DAC_VAL         (0x0)
 #define DAC6571_MAX_DAC_VAL         (0x3FF)
@@ -42,7 +44,7 @@ int DAC6571_Set (int val) {
     //open file
     FILE* fd=fopen(DAC6571_DriverFileName,"w");
     if (fd==NULL) {
-        FILE_LOG(logERROR, ("Could not open file for writing to set high voltage\n"));
+        FILE_LOG(logERROR, ("Could not open file %s for writing to set high voltage\n", DAC6571_DriverFileName));
         return FAIL;
     }
     //convert to string, add 0 and write to file
diff --git a/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c b/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
index fd9bd1b3a..5ce81b215 100755
--- a/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
+++ b/slsDetectorServers/slsDetectorServer/src/slsDetectorServer_funcs.c
@@ -654,7 +654,7 @@ int set_dac(int file_des) {
 	if (receiveData(file_des, args, sizeof(args), INT32) < 0)
 		return printSocketReadError();
 
-#if defined(MYTHEN3D) || defined(GOTTHARD2D)
+#if defined(MYTHEN3D) 
     functionNotImplemented();
 #else
 
@@ -779,6 +779,9 @@ int set_dac(int file_des) {
     case HIGH_VOLTAGE:
     case V_LIMIT:
         break;
+#elif GOTTHARD2D
+    case HIGH_VOLTAGE:
+		break;
 #endif
     default:
 #ifdef JUNGFRAUD
@@ -841,7 +844,7 @@ int set_dac(int file_des) {
     		case HIGH_VOLTAGE:
     			retval = setHighVoltage(val);
     			FILE_LOG(logDEBUG1, ("High Voltage: %d\n", retval));
-#if defined(JUNGFRAUD) || defined (CHIPTESTBOARDD) || defined(MOENCHD)
+#if defined(JUNGFRAUD) || defined (CHIPTESTBOARDD) || defined(MOENCHD) || defined(GOTTHARD2D) 
     			validate(val, retval, "set high voltage", DEC);
 #endif
 #ifdef GOTTHARDD
@@ -945,7 +948,10 @@ int set_dac(int file_des) {
                 validate(val, retval, "set vlimit", DEC);
                 break;
 #endif
-
+#ifdef GOTTHARD2D
+				default:
+					break;
+#elif
                 // dacs
     			default:
     			    if (mV && val > DAC_MAX_MV) {
@@ -1001,6 +1007,7 @@ int set_dac(int file_des) {
                     }
                     FILE_LOG(logDEBUG1, ("Dac (%d): %d %s\n\n", serverDacIndex, retval, (mV ? "mV" : "dac units")));
     				break;
+#endif
     		}
     	}
     }
diff --git a/slsSupportLib/include/versionAPI.h b/slsSupportLib/include/versionAPI.h
index 66a0c5e79..5e7d4ab73 100644
--- a/slsSupportLib/include/versionAPI.h
+++ b/slsSupportLib/include/versionAPI.h
@@ -9,4 +9,4 @@
 #define APIJUNGFRAU 0x190830
 #define APIMYTHEN3 0x190830
 #define APIEIGER 0x190830
-#define APIGOTTHARD2 0x190830
+#define APIGOTTHARD2 0x190902