Black Box IC470A, Руководство пользователя, Страница: 23 / 40

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4. Connect one pair of wires to the XMT A and XMT B
terminals on the terminal block, noting carefully
which color wire goes to which terminal. Similarly,
connect the
other pair of wires to the RCV A and
RCV B terminals. Note that the ordering of the
terminals is reversed in the IC473A-M as opposed
to the IC473A-F and the IC470A models:
Note that when you connect the cable at the other
end, you’ll want to cross-pin the wires this way,
with the XMT
→
RCV wires in one pair and the
RCV
←
XMT wires in another pair:
Converter RS-422 Device
XMT A (+) .....................RCV+
XMT B (–) .....................RCV–
RCV A (+) .....................XMT+
RCV B (–) .....................XMT–
RCV G XMT
A B B A
XMT G RCV
A B B A
CHAPTER 4: Installation
IC473A-M
IC473A-F, IC470A-M/F
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