Ross, > Thank you for your reply. It's useful for me to updating ldm in new machine. > But there is still one issue unsolved. > Our system embbeded ldm as its communication protocal. > We have to know the differences about the protocal of ldm 4 and the protocal > of ldm 6 because some old machine would still running on ldm 4 and we should > make sure that > the communication between new machine and old machine is workable. > > Can I get more details about this issue in your webside? There's no information on the website about LDM-4/LDM-6 interoperability. LDM-5 was designed to be interoperable with LDM-4; LDM-6 was designed to be interoperable with LDM-5. LDM-6 wasn't designed to inter-operate with LDM-4 and can't. Sorry. > Best Regard, > Ross Lai Regards, Steve Emmerson Ticket Details =================== Ticket ID: JHL-473805 Department: Support LDM Priority: Normal Status: Closed