Dear all, i really need help with this issue. there is a positioning module IP 266 in the system and i have its program the .266 file , and i want to transfer it to the module , still i can't transfer it where when used the COM 266 it gives me the error message F53 which states that either the cable isn't connected or there is no power supply to the card although i did the following steps 1) i installed the module on the bus and supplied the bus with 24V 2) i connected the cable to it which i used to connect it with the PLC and PG ( now PG -->Module) 3) i starts the COM 266 program and press F2 to become online however it still gives me this error message. is any of the above steps wrong or there is something missing or does any one have a clue concerning this issue.