diff --git a/slsDetectorSoftware/slsDetector/slsDetector.cpp b/slsDetectorSoftware/slsDetector/slsDetector.cpp
index e8e769cfd..217913328 100644
--- a/slsDetectorSoftware/slsDetector/slsDetector.cpp
+++ b/slsDetectorSoftware/slsDetector/slsDetector.cpp
@@ -493,6 +493,8 @@ int slsDetector::initializeDetectorSize(detectorType type) {
       thisDetector->nChan[X]=128;
       thisDetector->nChan[Y]=1;
       thisDetector->nChips=10;
+      thisDetector->nChip[X]=10;
+      thisDetector->nChip[Y]=1;
       thisDetector->nDacs=6;
       thisDetector->nAdcs=0;
       thisDetector->nModMax[X]=24;
@@ -508,6 +510,8 @@ int slsDetector::initializeDetectorSize(detectorType type) {
       thisDetector->nChan[X]=128;
       thisDetector->nChan[Y]=1;
       thisDetector->nChips=12;
+      thisDetector->nChip[X]=12;
+      thisDetector->nChip[Y]=1;
       thisDetector->nDacs=6;
       thisDetector->nAdcs=0;
       thisDetector->nModMax[X]=6;
@@ -519,6 +523,8 @@ int slsDetector::initializeDetectorSize(detectorType type) {
       thisDetector->nChan[X]=128;
       thisDetector->nChan[Y]=1;
       thisDetector->nChips=10;
+      thisDetector->nChip[X]=10;
+      thisDetector->nChip[Y]=1;
       thisDetector->nDacs=8;
       thisDetector->nAdcs=5;
       thisDetector->nModMax[X]=1;
@@ -530,6 +536,8 @@ int slsDetector::initializeDetectorSize(detectorType type) {
       thisDetector->nChan[X]=160;
       thisDetector->nChan[Y]=160;
       thisDetector->nChips=1;
+      thisDetector->nChip[X]=1;
+      thisDetector->nChip[Y]=1;
       thisDetector->nDacs=8;
       thisDetector->nAdcs=1;
       thisDetector->nModMax[X]=1;
@@ -541,6 +549,8 @@ int slsDetector::initializeDetectorSize(detectorType type) {
       thisDetector->nChan[X]=0;
       thisDetector->nChan[Y]=0;
      thisDetector->nChips=0;
+     thisDetector->nChip[X]=0;
+     thisDetector->nChip[Y]=0;
       thisDetector->nDacs=0;
       thisDetector->nAdcs=0;
       thisDetector->nModMax[X]=0;
diff --git a/slsDetectorSoftware/slsDetector/slsDetector.h b/slsDetectorSoftware/slsDetector/slsDetector.h
index 8c99e1283..8a70194f2 100644
--- a/slsDetectorSoftware/slsDetector/slsDetector.h
+++ b/slsDetectorSoftware/slsDetector/slsDetector.h
@@ -120,6 +120,8 @@ class slsDetector : public slsDetectorUtils, public energyConversion {
     int nChan[2];
     /**  number of chips per module*/
     int nChips;
+    /**  number of chips per module in one direction */
+    int nChip[2];
     /**  number of dacs per module*/
     int nDacs;
     /** number of adcs per module */
@@ -572,6 +574,9 @@ class slsDetector : public slsDetectorUtils, public energyConversion {
   /** Returns the number of chips per module (without connecting to the detector) */
   int getNChips(){return thisDetector->nChips;}; //
 
+  /** Returns the number of chips per module (without connecting to the detector) */
+  int getNChips(dimension d){return thisDetector->nChip[d];}; //
+
   /** Returns the number of  modules (without connecting to the detector) */
   int getNMods(){return thisDetector->nMods;}; //
   
@@ -580,7 +585,7 @@ class slsDetector : public slsDetectorUtils, public energyConversion {
 
   int getChansPerMod(int imod=0){return thisDetector->nChans*thisDetector->nChips;};
 
-  int getChansPerMod( dimension d,int imod=0){return thisDetector->nChan[d]*thisDetector->nChips;};
+  int getChansPerMod( dimension d,int imod=0){return thisDetector->nChan[d]*thisDetector->nChip[d];};
 
   /** Returns the max number of  modules in direction d (without connecting to the detector) */
   int getNMaxMod(dimension d){return thisDetector->nModMax[d];}; //
@@ -591,11 +596,11 @@ class slsDetector : public slsDetectorUtils, public energyConversion {
 
   int getTotalNumberOfChannels(){return thisDetector->nChans*thisDetector->nChips*thisDetector->nMods;};
 
-  int getTotalNumberOfChannels(dimension d){return thisDetector->nChan[d]*thisDetector->nChips*thisDetector->nMod[d];};
+  int getTotalNumberOfChannels(dimension d){return thisDetector->nChan[d]*thisDetector->nChip[d]*thisDetector->nMod[d];};
 
   int getMaxNumberOfChannels(){return thisDetector->nChans*thisDetector->nChips*thisDetector->nModsMax;};
 
-  int getMaxNumberOfChannels(dimension d){return thisDetector->nChan[d]*thisDetector->nChips*thisDetector->nModMax[d];};
+  int getMaxNumberOfChannels(dimension d){return thisDetector->nChan[d]*thisDetector->nChip[d]*thisDetector->nModMax[d];};
 
   /** Returns number of rois */
   int getNRoi(){return thisDetector->nROI;};