Add PMAC V3

- limit switches: use PXX37, PXX38 insteam of MXX21, MXX22
- if the motor is running query for axis position (QXX10) and status (PXX00)
- else query also error status (PXX01) and limit switches (PXX37-8)
- make the requests in 1+1 transactions

sinqEPICSApp/src/pmacAxis.h

@@ -131,4 +131,16 @@ class LiftAxis : public pmacAxis
   int waitStart;
 };
 
+ /********************************************
+ * Protocol version 3 requires just some minor change
+ *
+ * Michele Brambilla, February 2022
+ ********************************************/
+
+class pmacV3Axis : public pmacAxis {
+public:
+  using pmacAxis::pmacAxis;
+  friend class pmacController;
+ };
+
 #endif /* pmacAxis_H */