Answers in the forums created
-
AuthorPost
-
August 31, 2012 at 3: 26 pm in response to: Simple anti-theft for solar panels with optical fiber #37386PaulParticipant
During the laying phase of the fiber I had to cut the fiber at each panel board. I would like to avoid making head-end joints on the fiber, so I would mount an FO converter for each panel board.
From the RS232 port of the SlimLine I go to an RS232 / RS422 converter in order to be able to extend the length of the network in RS422, I transport the signal in RS422 up to the first panel board by inserting the first RS422 / FO converter I make the FO loop and return to the converter to exit in 422 towards the second converter and so on up to converter n ° 9.
All the cabling of the FO converters in series is made TX on RX both on the FO side and on the RS422 side. From the last FO converter back to the RS422 / RS232 converter, I attach wiring diagram of what is described asking for a verification of the correctness and feasibility.
June 27, 2012 at 12: 43 pm in response to: Communication FB with Aurora Power One inverter (ABB) #37306PaulParticipantI did a test with the example program by reducing the number of variables to the ones I need and setting the communication on the "COM2" port to the modbus address "2" which corresponds to the first of the 6 inverters installed on the system: everything works correctly .
Is it possible to have an example to read “N” inverters cyclically and copy the data in “N” array? Is it possible to write it in LD?
PaulParticipantUsing the recording object I noticed that the recordings can be activated on a “time basis” or on a “trigger basis”; in the latter case I have to read the variable on the PLC (SlimLine) that activates the recording.
I wanted to know (if any) what is the minimum time for which I have to activate this variable or if I can have the terminal confirm that the data has been read (for example, to reset the variable registered after reading).
December 21, 2011 at 3: 22 pm in response to: Simple anti-theft for solar panels with optical fiber #37087PaulParticipantIn the end I opted for the solution you proposed to me, I use an ATC 277M converter by performing a ring with an optical fiber. The fiber comes out of the Tx connector and is passed through the slots of all the panels and then returns to the Rx connector. In this way, the data received from the RS232 serial is transmitted over the fiber, and then received from the other end of the fiber and converted back into RS232 serial.
I connected a CPU module to RS232 SlimLine as indicated in the previous post. Can you give me a sample program to transfer to SlimLine to check the correctness of the optical link?
-
AuthorPost