Gents We are using a PLC for a huge heater,when we do some maintenance in the heater,the power switched off,then we lost the programme from the plc,the indications shows TER,ERR,BAT we dont have the programme,how i can get it and how to programme it again,is it possible through internet. type of plc we are use is: MODICON,TSX MICRO,TSXRKZ02,TELEMECANIQUE. please help,thanks, Manbo.