diff --git a/slsDetectorServers/ctbDetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/ctbDetectorServer/slsDetectorFunctionList.c
index 7917676ec..2d34011f4 100644
--- a/slsDetectorServers/ctbDetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/ctbDetectorServer/slsDetectorFunctionList.c
@@ -1433,16 +1433,18 @@ int setDAC(enum DACINDEX ind, int val, bool mV, char *mess) {
     int dacval = val;
     char dacName[20] = {0};
     snprintf(dacName, sizeof(dacName), "dac %d", ind);
+
     if (mV) {
         if (validateDACValue(ind, val, mess) == FAIL)
             return FAIL;
 
         // vchip dac (dacname only())
-        if (ind == D_PWR_CHIP) {
+        if (ind == (int)D_PWR_CHIP) {
             snprintf(dacName, sizeof(dacName), "v_chip");
         }
         // power dacs (dacname and power should be disabled)
         else if (ind >= NDAC_ONLY) {
+            // power dac name
             {
                 enum PWRINDEX pwrIndex = PWR_IO;
                 if (getPowerIndexFromDACIndex(ind, &pwrIndex, mess) == FAIL)
@@ -1450,6 +1452,7 @@ int setDAC(enum DACINDEX ind, int val, bool mV, char *mess) {
                 char *powerNames[] = {PWR_NAMES};
                 snprintf(dacName, sizeof(dacName), "%s", powerNames[pwrIndex]);
             }
+
             if (verifyPowerRailDisabled(ind, dacName, mess) == FAIL)
                 return FAIL;
         }
@@ -1627,24 +1630,15 @@ int setPowerRailEnabled(enum DACINDEX indices[], int count, bool enable,
     // get power indices for log messages and mask
     uint32_t mask = 0;
     enum PWRINDEX pwrIndices[count];
-    char *powerNames[] = {PWR_NAMES};
     for (int i = 0; i != count; ++i) {
-        if (getPowerIndexFromDACIndex(indices[i], &pwrIndices[i], mess) ==
-            FAIL) {
-            sprintf(mess,
-                    "Cannot set power rail for %s. Use powerlist to see whats "
-                    "available.\n",
-                    powerNames[pwrIndices[i]]);
+        if (getPowerIndexFromDACIndex(indices[i], &pwrIndices[i], mess) == FAIL)
             return FAIL;
-        }
-
-        LOG(logDEBUG1,
-            ("Setting power rail for %s\n", powerNames[pwrIndices[i]]));
         if (getPowerRailMask(pwrIndices[i], &mask, mess) == FAIL)
             return FAIL;
     }
     // log message
     {
+        char *powerNames[] = {PWR_NAMES};
         char message[256] = {0};
         sprintf(message, "Switching %s power for ", enable ? "on" : "off");
         for (int i = 0; i != count; ++i) {
@@ -1674,14 +1668,8 @@ int setPowerRailEnabled(enum DACINDEX indices[], int count, bool enable,
 
 int isPowerRailEnabled(enum DACINDEX ind, bool *retval, char *mess) {
     enum PWRINDEX pwrIndex = PWR_IO;
-    if (getPowerIndexFromDACIndex(ind, &pwrIndex, mess) == FAIL) {
-        char *powerNames[] = {PWR_NAMES};
-        sprintf(mess,
-                "Cannot set power rail for %s. Use powerlist to see whats "
-                "available.\n",
-                powerNames[pwrIndex]);
+    if (getPowerIndexFromDACIndex(ind, &pwrIndex, mess) == FAIL)
         return FAIL;
-    }
 
     uint32_t mask = 0;
     if (getPowerRailMask(pwrIndex, &mask, mess) == FAIL)
@@ -1710,11 +1698,11 @@ int verifyPowerRailDisabled(enum DACINDEX ind, char *dacName, char *mess) {
 void powerChip(bool enable) {
     uint32_t addr = POWER_REG;
     if (enable) {
-        LOG(logINFOBLUE, ("Powering on all voltage regulators\n"));
+        LOG(logINFOBLUE, ("Powering ON all\n"));
         bus_w(addr, bus_r(addr) | POWER_ENBL_VLTG_RGLTR_MSK);
         return;
     } else {
-        LOG(logINFOBLUE, ("Powering off all voltage regulators\n"));
+        LOG(logINFOBLUE, ("Powering OFF all\n"));
         bus_w(addr, bus_r(addr) & (~POWER_ENBL_VLTG_RGLTR_MSK));
     }
 }
diff --git a/slsDetectorServers/slsDetectorServer/src/LTC2620_Driver.c b/slsDetectorServers/slsDetectorServer/src/LTC2620_Driver.c
index e08a98caf..ee76c5e64 100644
--- a/slsDetectorServers/slsDetectorServer/src/LTC2620_Driver.c
+++ b/slsDetectorServers/slsDetectorServer/src/LTC2620_Driver.c
@@ -86,7 +86,7 @@ int LTC2620_D_SetDacValue(int dacnum, int val, char *dacname, char *mess) {
         LOG(logERROR, (mess));
         return FAIL;
     }
-    LOG(logINFO, ("\tSetting DAC %s [%d]: %d dac\n", dacname, dacnum, val));
+    LOG(logINFOBLUE, ("\tSetting DAC %s [%d]: %d dac\n", dacname, dacnum, val));
 
 #ifdef VIRTUAL
     return OK;
diff --git a/slsDetectorServers/xilinx_ctbDetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/xilinx_ctbDetectorServer/slsDetectorFunctionList.c
index 59d6fdce0..f8689c5cb 100644
--- a/slsDetectorServers/xilinx_ctbDetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/xilinx_ctbDetectorServer/slsDetectorFunctionList.c
@@ -590,14 +590,14 @@ int powerChip(bool on, char *mess) {
     uint32_t mask = POWER_VIO_MSK | POWER_VCC_A_MSK | POWER_VCC_B_MSK |
                     POWER_VCC_C_MSK | POWER_VCC_D_MSK;
     if (on) {
-        LOG(logINFOBLUE, ("Powering chip: on\n"));
+        LOG(logINFOBLUE, ("Powering ON all\n"));
         bus_w(addr, bus_r(addr) | mask);
 
         if (configureChip(mess) == FAIL)
             return FAIL;
 
     } else {
-        LOG(logINFOBLUE, ("Powering chip: off\n"));
+        LOG(logINFOBLUE, ("Powering OFF all\n"));
         bus_w(addr, bus_r(addr) & ~mask);
         chipConfigured = 0;
         if (FAIL == XILINX_FMC_disable_all(mess, MAX_STR_LENGTH)) {
@@ -1306,25 +1306,38 @@ int setDAC(enum DACINDEX ind, int val, bool mV, char *mess) {
         return FAIL;
 
     int dacval = val;
+    char dacName[20] = {0};
+    snprintf(dacName, sizeof(dacName), "dac %d", ind);
+
     if (mV) {
         if (validateDACValue(ind, val, mess) == FAIL)
             return FAIL;
 
+        if (ind == (int)D_PWR_EMPTY) {
+            snprintf(mess, MAX_STR_LENGTH, "Invalid dac index %d\n", (int)ind);
+            LOG(logERROR, (mess));
+            return FAIL;
+        }
         // power dacs (power should be disabled)
         if (ind >= NDAC_ONLY && ind != (int)D_PWR_EMPTY) {
-            if (verifyPowerRailDisabled(ind, mess) == FAIL)
+            // power dac name
+            {
+                enum PWRINDEX pwrIndex = PWR_IO;
+                if (getPowerIndexFromDACIndex(ind, &pwrIndex, mess) == FAIL)
+                    return FAIL;
+                char *powerNames[] = {PWR_NAMES};
+                snprintf(dacName, sizeof(dacName), "%s", powerNames[pwrIndex]);
+            }
+
+            if (verifyPowerRailDisabled(ind, dacName, mess) == FAIL)
                 return FAIL;
         }
 
         if (convertVoltageToDACValue(ind, val, &dacval, mess) == FAIL)
             return FAIL;
     }
-    {
-        char dacName[20] = {0};
-        snprintf(dacName, sizeof(dacName), "dac %d", ind);
-        if (LTC2620_D_SetDacValue((int)ind, dacval, dacName, mess) == FAIL)
-            return FAIL;
-    }
+    if (LTC2620_D_SetDacValue((int)ind, dacval, dacName, mess) == FAIL)
+        return FAIL;
     dacValues[ind] = dacval;
     return OK;
 }
@@ -1471,23 +1484,20 @@ int isPowerRailEnabled(enum DACINDEX ind, bool *retval, char *mess) {
         return FAIL;
 
     *retval = (bus_r(CTRL_REG) & mask) != 0;
+    LOG(logDEBUG1, ("get power %d:%d\n", pwrIndex, *retval));
     return OK;
 }
 
-int verifyPowerRailDisabled(enum DACINDEX ind, char *mess) {
+int verifyPowerRailDisabled(enum DACINDEX ind, char *dacName, char *mess) {
     bool isEnabled = false;
     if (isPowerRailEnabled(ind, &isEnabled, mess) == FAIL)
         return FAIL;
 
     if (isEnabled) {
-        enum PWRINDEX pwrIndex = PWR_IO;
-        if (getPowerIndexFromDACIndex(ind, &pwrIndex, mess) == FAIL)
-            return FAIL;
-        char *powerNames[] = {PWR_NAMES};
         sprintf(mess,
                 "Could not set dac for %s. Please disable the power rail "
                 "before setting the dac value.\n",
-                powerNames[pwrIndex]);
+                dacName);
         LOG(logERROR, (mess));
         return FAIL;
     }
diff --git a/slsDetectorServers/xilinx_ctbDetectorServer/slsDetectorFunctionList.h b/slsDetectorServers/xilinx_ctbDetectorServer/slsDetectorFunctionList.h
index e705b25e4..47fcc5b5d 100644
--- a/slsDetectorServers/xilinx_ctbDetectorServer/slsDetectorFunctionList.h
+++ b/slsDetectorServers/xilinx_ctbDetectorServer/slsDetectorFunctionList.h
@@ -141,7 +141,7 @@ int getPowerRailMask(enum PWRINDEX ind, uint32_t *mask, char *mess);
 int setPowerRailEnabled(enum DACINDEX indices[], int count, bool enable,
                         char *mess);
 int isPowerRailEnabled(enum DACINDEX ind, bool *retval, char *mess);
-int verifyPowerRailDisabled(enum DACINDEX ind, char *mess);
+int verifyPowerRailDisabled(enum DACINDEX ind, char *dacName, char *mess);
 
 int getADC(enum ADCINDEX ind, int *value, char *mess);
 int getSlowADC(int ichan, int *retval, char *mess);