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Hi all plz I need ur help, I have a modicon micro plc and the error lamp is flashing (red colour), this happened before from 1year I just changed the backup battery ,reprograme the plc with the application and every thing is fine and machine back to work normally, now I replace the battery with a new one (knowing that battery low level indicator doesn't light),the error led is still flashing but the machine just working fine except for error flashing, I reprogram the plc with the original application and run it nothing happen the error still flashing but the machine is working, using my pl7 micro software I go to diagnostic mode and it indicates that the last fault is caused by battery (I replaced battery,reprogramme plc but error is still flashing ) any suggestion to know why error lamp still flashing knowing that I have modicon plccmicro (pl7 micro) with a memory card thank you

thxx you but the problem was solved i download uniteleway driver for windows 98 and evey thing is ok now and i ask modicon agent about miro software and he want its price 1200 euro!!!! thxx all

i do all of this and still having problem is that when connecting to plc i just got error messege(could not esatblish connection with physical plc vis driver sys),my soft is old pl7 v1.8 and it was work befor on win95 and now im trying to make it work on win98 maybe is that the problem?does i need another updated teleway driver?also bout plc adress what it must be knowing im connecting to a sinle plc via tsxpcu1030 cable the default plc address is sys does i muct cahnge it thxxxx

thx my freind i tried to reset plc nothing happen also the battery indicator doesnt light to mean that the battery is empty any way i will replace battery and try to upload the progect again to plc bcz i have the cable which is used with my pl7 micro v1.8,but i have another quastion is that when i install my pl7 micro software it will automatically configure the serial port to be used or i must configure it using teleway driver bcz when i choos the port to use fro teleway driver it will ask me to save it ,where i muct save it or i just save in the default directory thxxxxx

hi all i have a problem in my modicon micro plc and the error lamp is flashing with a red colour the problem happened when i just turn my panel elctrcity off like every day but when i turned the panel power on the system indicte error in connection massege on my screen panel and the error lamp is flashing with a red colour while the green run led is completely off now 1-what is the possible problem,knowing that the backup battery is good 2- i have pl7 micro v1.8 software which is come packaked in 10 floppy disk when we bring the plc ,i installed the software in my pc and its work fine but i want to know the rule of unitelway driver ? is by installing the pl7 micri in my computer i can connect to my plc normally knowing that i have the suitable cable between serial port and plc or i need a driver to be set(unitelway),and if i need driver to establish communiction between plc and pc how i can configure it sorry im speaking so much but this the first time i want to upload programme to plc thxxxx