Problem with ModBus addressing between AC800M and gas-analyzer ACF-NT FTIR
I am siqnieto with the Modbus addressing problem.
I tried the address which you suggested. Unfortunately it was reported a new error -4902: Exception response from partner.I explained it in the previous question that i can read only the first three status signals with address: '%IX10#0'.
I use a function block MBRead to read the signals. In it for StartAddr parameter i put the global address and i expect to read the whole status signals. In Rd parameter i put an value which point a data type in which are define the signals i want to read.
To read an analog signals i use an address - '%QW10#00' but if I use for the status signals the address - '%QX10#00' the error is shown.
I am sorry if i bother you but this week i can make some experiments because I am in the Plant. If you have some other ideas please tell me them because i don't know what to do.
Thank you in advance!