On Tue, 2012-02-28 at 20:31 +0100, Michael Haberler wrote: > Am 28.02.2012 um 20:12 schrieb Kirk Wallace: > > > > It seems that Modbus over TCP/IP setups are more common in the wild than > > end to end Ethernet Modbus TCP/IP, but if one where to set up LinuxCNC > > the vfs11_vfd driver I pushed yesterday is a Modbus master which suppports > serial as well as in/outgoing TCP connections, and the plumbing is all in > place > > so if you want to support a new Modbus device you'd better off basing code on > vfs11_vfd than on gs2_vfd
I see that someone has been busy. It will take some time for me to review your new vfs11 code. In my project, I have split the serial port function out of the device component so that multiple device components can share one serial port. It seems with ModbusTCP/IP and maybe Modbus over TCP/IP the the port specific functions are already segregated and there is no resource locking as with the serial port. I am tending towards having a number of smaller focused components, a device component for each model and a port component for each port as needed. An integrator would choose a device component and port component that matched the hardware and network being used, rather than one big catch all component. I keep getting side tracked, but I think my focus should be on formalizing a serial port component, VFD and PLC device components with very basic functions, and a means to sequence device queries to the port component. Frankly, I'm beginning to lose steam on this one and I have an IRAMS coming in the mail, so it may take a while to get something significant done. http://wallacecompany.com/machine_shop/EMC2/Screenshot-12.png http://wallacecompany.com/machine_shop/EMC2/mbrtuport.c http://wallacecompany.com/machine_shop/EMC2/sj200mbbasic.comp -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
