Hello everyone, I do not know if this is the right place to ask, but this is my first time. Customer asking us to provide the above. I believe that PM8XXX will satisfy the requirements “Make provision for an addressable communication card capable of

[sesa366249]

Hello everyone,

I do not know if this is the right place to ask, but this is my first time.

Customer asking us to provide the above. I believe that PM8XXX will satisfy the requirements

                          “Make provision for an addressable communication card capable of transmitting all data, including trip data over compatible two-wire local area network to a central personal computer for storage and/or printout. The network shall also be capable of transmitting data in RS-232c format via a translator module.”

– I am asking here if you please can help:

1 – What they mean by 2-wire LAN?

2 – What they mean by translator module? Do we need to integrate an external device?

3 – If I do the following –

All comm’s trip units of breakers will be wired to power meter using RS-232 ( 2 Wires+ Shield). The power meter will have already an Ethernet card integrated to interface.  Is that can satisfy our customer’s requirements.

Any helpful comments or idea are welcome!

Thanks, 

[Matt_Curry]

Hi Mouhssin,

Definitely the right place to ask these types of questions.  John Straughn, are you able to help out with this question?

[sesa50168 · Accepted solution]

Hi Mouhssin -

The specification sounds like a very old specification.  The 2 wire LAN would be serial communications. If you are connecting breakers to the PM8000 serial port, that comms will be RS485 - not RS232.   RS232 is limited to 50 feet!   Also when connecting to the trip units, be sure you have the proper communication interfaces, since they do not speak Modbus.  Frankly, if you can get access to the engineer/customer that provided the specs, I suggest you discuss with them directly to learn what they are trying to accomplish, and see if they would accept an Ethernet solution.

[sesa366249]

Thank you John for your quick response -

[Yut]

I think Translator module means "Converter".

You can find the USB to RS-485 converter in the market for your network (computer has no RS-232 port any more unless you add one so better use the USB to RS-485 converter).