ppi fix

Samples/MachineJob/appsettings.json

@@ -36,7 +36,7 @@
         "h:slaveAddress": 1,
         "i:masterAddress": 2,
         "j:src": 1,
-        "k:dst": 0 
+        "k:dst": 0
       },
       {
         "a:id": "ModbusMachine2",
@@ -48,6 +48,19 @@
         "g:slaveAddress": 3,
         "h:masterAddress": 2,
         "i:endian": "BigEndianLsb"
+      },
+      {
+        "a:id": "SiemensMachine2",
+        "b:protocol": "Siemens",
+        "c:type": "Ppi",
+        "d:connectionString": "COM11",
+        "e:model": "S7_200",
+        "f:addressMap": "AddressMapSiemens",
+        "g:keepConnect": true,
+        "h:slaveAddress": 2,
+        "i:masterAddress": 0,
+        "j:src": 1,
+        "k:dst": 0
       }
     ],
     "addressMap": {