I'm working on a Schneider TSX Micro TSX3722001 with an alternately flashing ERR and TER led. The machine has been idle for about 3 years and I suspect at some stage the batteries have died, but I've replaced them in the PLC and memory card recently. I guess I need the OS-LOADER to upload the operating system but I don't have this program or know where to get it. I've made a cable using a RS232 to RS485 converter and have PL-7 software running on a XT PC. I haven't got the PLC and PC to talk to each other yet so I'm a bit stuck. Can anyone give me some advice?