8/9/2017 10:42 AM | |
Posts: 46 Rating: (1) |
Hello Below is the link of TIA V13 Program (Program is more then 3MB so uploaded to sendspace). https://www.sendspace.com/file/ndia3m During downloading to the PLC there is a massage from TIA :"Different modules Differences between configured and target modules (online) Online article number: (online) 6ES7 214-1HG40-0XB0 <->(offline) 6ES7 214-1HG40-0XB0 Firmware version: (online) V4.2 <->(offline)V4.1" During running condition sometime MB_MASTER (network 5 & 6 of OB1) go to Hang Mode(error come.). We tried to solve this issue by programming the REQ and EN bit of the MB_Master FB recalling it. But when it is hanged only way is to restart the PLC, which is not all the time possible for this process. Please advice for the solution.Thanks |
8/10/2017 12:09 AM | |
Joined: 7/7/2010 Last visit: 9/20/2024 Posts: 15213 Rating: (2417)
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For the firmware differences, you need to change one of them, either the project needs to be upgraded to V14 (so you can use FW 4.2), or the PLC firmware needs to be downgraded to 4.1 so you can use V13. As for the MB_MASTER REQ/EN bits, do you understand the EN signal should be on nearly all the time (for most Modbus comms anyhow). The REQ triggers a request, then you reset the trigger as soon as the busy signal goes high. Then disable another request until the BUSY output signal goes low, OR, either the DONE or ERROR outputs go high. That should prevent block lock ups.
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