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Hi, user in topic found that new firmware has problem with modem init. <Burn "upload project"> with version 9.8.80, install 9.8.65 and update all system files to that version and plc run normally after that. I tried to upload with success with only a warning message at the end that you are trying to upload a project from a newer version. It work! and it looks functioning pretty well (for now). GSM is back on line! (exporting hmi screens failed at importing) It looks that the problem is with BOOT files newer that 2.2.48. When having newer boot file the Siemens TC35i didn't initialize on any port. meanwhile I tried and version 9.8.80 with OS 4.6.15 is also working with BOOT file 2.2.48... so I could let the project in 9.8.80. Please try to load your project under 9.8.65 Visilogic version firmware -
Just checked and PLC's OS is already up to date... -
Hi George I think the idea of the "modbus address access limitation" is to copy addresses you want access to to the unprotected area. therefore the external user can read and write to this area only. since the data is only a copy of data used in the ladder it does not matter if someone writes in error to the address. Regards Denis -
Hi Philip; You will need a Unitronics UCR Router to extract the data from the M91, via the RS232 COM 1 Port, and you need to use Modbus protocol. One obstacle is M91 has 1 Comport, so it has to be shared between Modbus and programming when needed. Share the same com settings for both. DanT -
Please read this topic. Problem with modem init can be PLC firmware related
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