REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
1VTA100004-en DMS,2001-10-04 REF542plus: Installation and Commissioning 54 / 80
Figure 18: Loop-back cable for the RHMI serial ports test
The test will consist in the following steps:
The LCD page for the serial ports test is displayed according to next figure:
SERIAL PORTS TEST
Please, be sure that the two serial
ports are connected with the
loopback cable
TEST OK
↵
From RHMI test page
Shown after test end
2 sec
after test
end
To RHMI
test page
Figure 19: Serial Ports Test Page
RS485 to RS232 communication test
10 telegrams will be sent to the optical port.
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