Unable to set point value in Mango

[Sab]

Hi guys,
I am trying to set a point value for a usb to serial port connected to my computer. However I keep getting this exception

com.serotonin.modbus4j.exception.ModbusTransportException: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.Rt
uMessageRequest@97d1ff
        at com.serotonin.modbus4j.serial.rtu.RtuMaster.sendImpl(RtuMaster.java:80)
        at com.serotonin.modbus4j.ModbusMaster.send(ModbusMaster.java:92)
        at com.serotonin.modbus4j.ModbusMaster.sendFunctionGroup(ModbusMaster.java:346)
        at com.serotonin.modbus4j.ModbusMaster.send(ModbusMaster.java:292)
        at com.serotonin.modbus4j.ModbusMaster.getValue(ModbusMaster.java:115)
        at com.serotonin.m2m2.modbus.rt.ModbusDataSourceRT.forcePointRead(ModbusDataSourceRT.java:332)
        at com.serotonin.m2m2.rt.RuntimeManager.forcePointRead(RuntimeManager.java:468)
        at com.serotonin.m2m2.web.dwr.BaseDwr.forcePointRead(BaseDwr.java:220)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.directwebremoting.impl.ExecuteAjaxFilter.doFilter(ExecuteAjaxFilter.java:34)
        at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
        at com.serotonin.m2m2.web.dwr.util.TranslationsFilter.doFilter(TranslationsFilter.java:37)
        at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
        at com.serotonin.m2m2.web.dwr.util.ExceptionDetectionFilter.doFilter(ExceptionDetectionFilter.java:26)
        at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
        at com.serotonin.m2m2.web.dwr.util.DwrPermissionFilter.doFilter(DwrPermissionFilter.java:38)
        at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
        at org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:431)
        at org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:283)
        at org.directwebremoting.servlet.PlainCallHandler.handle(PlainCallHandler.java:52)
        at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101)
        at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:146)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:478)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
        at org.eclipse.jetty.server.Server.handle(Server.java:346)
        at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589)
        at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1065)
        at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:823)
        at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:220)
        at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411)
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535)
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529)
        at java.lang.Thread.run(Unknown Source)
Caused by: com.serotonin.messaging.TimeoutException: request=com.serotonin.modbus4j.serial.rtu.RtuMessageRequest@97d1ff
        at com.serotonin.messaging.MessageControl.send(MessageControl.java:140)
        at com.serotonin.messaging.MessageControl.send(MessageControl.java:105)
        at com.serotonin.modbus4j.serial.rtu.RtuMaster.sendImpl(RtuMaster.java:74)
        ... 47 more
WARN  2013-01-11 09:36:46,754 (com.serotonin.m2m2.rt.dataSource.PollingDataSource.scheduleTimeout:63) - Kitchen: poll at 2013/01/11 09:36:46 abor
ted because a previous poll started at 2013/01/11 09:36:31 is still running

I have tried changing the timeout but that does not help at all. Does anyone know why this is happening? I have taken a look at http://mango.serotoninsoftware.com/forum/posts/list/532.page but it doesnt seem to provide a proper solution.

[mlohbihler]

You're not setting a point value in the remote device at this time. You are running a forced read:

        at com.serotonin.modbus4j.ModbusMaster.getValue(ModbusMaster.java:115)  
        at com.serotonin.m2m2.modbus.rt.ModbusDataSourceRT.forcePointRead(ModbusDataSourceRT.java:332)  
        at com.serotonin.m2m2.rt.RuntimeManager.forcePointRead(RuntimeManager.java:468)  
        at com.serotonin.m2m2.web.dwr.BaseDwr.forcePointRead(BaseDwr.java:220)  

In any case, if the data source is able to read the value during regular reads, then it would be interesting to see an i/o trace (successful vs unsuccessful).