diff --git a/robot_lib.py b/robot_lib.py
index fecd4255..6ccff60a 100644
--- a/robot_lib.py
+++ b/robot_lib.py
@@ -407,12 +407,14 @@ def unmountRobotSample(puckPos,pinPos,sampID): #will somehow know where it came
       daq_lib.gui_message(message)
       logger.error(message)
       return 0
-    #detDist = beamline_lib.motorPosFromDescriptor("detectorDist")
-    det_z_pv = 'XF:17IDC-ES:FMX{Det-Ax:Z}Mtr'
-    detDist = caget(f'{det_z_pv}.RBV')
-    if detDist < ROBOT_MIN_DISTANCE:
-      caput(f'{det_z_pv}.VAL', ROBOT_MIN_DISTANCE, wait=True)  # TODO shouldn't this wait for SE transition or something??
-    detDist = caget(f'{det_z_pv}.RBV')
+    if daq_utils.beamline == "fmx":
+      det_z_pv = 'XF:17IDC-ES:FMX{Det-Ax:Z}Mtr'
+      detDist = caget(f'{det_z_pv}.RBV')
+      if detDist < ROBOT_MIN_DISTANCE:
+        caput(f'{det_z_pv}.VAL', ROBOT_MIN_DISTANCE, wait=True)  # TODO shouldn't this wait for SE transition or something??
+      detDist = caget(f'{det_z_pv}.RBV')
+    else:
+      detDist = beamline_lib.motorPosFromDescriptor("detectorDist")
     if detDist < ROBOT_MIN_DISTANCE and abs(detDist - ROBOT_MIN_DISTANCE) > ROBOT_DISTANCE_TOLERANCE:
       logger.error(f"ERROR - Detector closer than {ROBOT_MIN_DISTANCE} and move than {ROBOT_DISTANCE_TOLERANCE} from {ROBOT_MIN_DISTANCE}! actual distance: {detDist}. Stopping.")
       return 0