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FS-8700-17_Opto22.doc Manual
3
HARDWARE CONNECTIONS
The FieldServer is connected to the OPTO22 device as shown below.
Configure the OPTO22 device according to manufacturer's instructions.
FieldServer
3.1
Connection Notes
B2 Communication connections are made to the rack (PB4AH, PA8AH, PB16AH), not to the brain board.
COM points must not be connected to Earth Ground.
Bridging 4-wire RS-422 to get 2-wire RS-485 may not work in certain applications, and in this case it is
recommended that a RS-232 to RS-422 converter is used in between the FieldServer and the OPTO 22 devices .
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com
Tel: (408) 262 2299 Fax: (408) 262 2269 Toll Free: (888) 509 1970 email: support@fieldserver.com
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COM
FO
FH
TH
TO
PREVIOUS OPTOMUX
B1 or B2
R2
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COM
FO
FH
TH
TO
AC 30 A / B
RS-485
Opto Isolated
R1
Page 3 of 24
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COM
FO
FH
TH
TO
NEXT OPTOMUX
B1 or B2
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