on modbus tcp/ip the tansaction id should always be 0

Changelog

@@ -1,3 +1,6 @@
+2023-11-21:
+- fixed: on modbus tcp/ip the transaction id should always be 0
+
 2023-09-26:
 - disconnect button also unselect the autoconnect 
   and the update checkbox

Makefile

@@ -1,5 +1,5 @@
 .SILENT: help
-VERSION = 0.1.0
+VERSION = 0.1.1
 
 -include Makefile.rules
 

nwthread.cc

@@ -185,7 +185,8 @@ void NetworkThread::BuildAndSendReadReq(char *buffer, int size) {
 	char *pos;
 
 	req_mbh.length = 0;
-	req_mbh.transid++;
+	// req_mbh.transid++;		// with modbus tcp/ip it should always be set to 0
+	req_mbh.transid = 0;
 	pos = modbustcp_pkt_headerrq(buffer, size, &req_mbh);
 	tcp.Write(buffer, (pos-buffer));
 };

testmodbus-client.ui

@@ -102,7 +102,7 @@
                                         <property name="visible">True</property>
                                         <property name="can-focus">True</property>
                                         <property name="width-chars">6</property>
-                                        <property name="text" translatable="yes">1502</property>
+                                        <property name="text" translatable="yes">502</property>
                                       </object>
                                       <packing>
                                         <property name="expand">False</property>