- Check that all connections comply with the connection diagrams.
- Perform a loop back test on two units:
- Connect the two RS-485 ports.
- Connect the two RS-232 ports to two PC RS-232 ports.
- Running hyper terminal programs
on both PCs, send ASCII characters
to the ISO-485-PI9 converter from
one PC port, and check that the
characters are received at the 2nd
PC port. Repeat the test in the
opposite direction. This tests that
the transmit and receive functions
of both ISO-485-PI9 units are working properly.
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