rejoe.koshy
Member
Hi guys,
I have a PU dispensing machine installed at my end having MLX 1200 and 22711-TD HMI.The machine was running fine and suddenly the message starts showing up on the HMI screen, which says the "RTC module is missing, machine locked" & the outputs have been switched off.
The program is OEM locked & hence I cant view or upload the program .The OEM has sent me memory module & a memory card, with which I reloaded the PLC & HMI program but unfortunately , the machine is
still displaying the error.
There is no fault (hardware) on the PLC .I am in a fix trying to understand the reason such a problem.The hardware is all fine, there is no RTC module in PLC ,I have replaced the battery of the HMI unit...but issue still stands!!!
What could possibly go wrong??Is it possible that some remnants of the last program is retained by the PLC , even after reloading the program?
I have a PU dispensing machine installed at my end having MLX 1200 and 22711-TD HMI.The machine was running fine and suddenly the message starts showing up on the HMI screen, which says the "RTC module is missing, machine locked" & the outputs have been switched off.
The program is OEM locked & hence I cant view or upload the program .The OEM has sent me memory module & a memory card, with which I reloaded the PLC & HMI program but unfortunately , the machine is
still displaying the error.
There is no fault (hardware) on the PLC .I am in a fix trying to understand the reason such a problem.The hardware is all fine, there is no RTC module in PLC ,I have replaced the battery of the HMI unit...but issue still stands!!!
What could possibly go wrong??Is it possible that some remnants of the last program is retained by the PLC , even after reloading the program?
Last edited: