ABB REF542plus Installation And Commissioning Manual page 54

1VTA100004-en
REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
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:
From RHMI test page
S E R I A L P O R T S T E S T
P l e a s e , b e s u r e t h a t t h e t w o s e r i a l
p o r t s a r e c o n n e c t e d w i t h t h e
l o o p b a c k c a b l e
Shown after test end
Figure 19: Serial Ports Test Page
RS485 to RS232 communication test
10 telegrams will be sent to the optical port.
DMS,2001-10-04
↵
2 sec
after test
end
T E S T O K
REF542 plus : Installation and Commissioning
To RHMI
test page
54 / 80