Black-box IC476A-F-R2 Manual de usuario Pagina 15

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ASYNC 232422/485 CONVERTER
4.1 Connection to the RS-485 Interface
must
4.1.1 4-W
IRE
C
ONNECTION
U
SING THE
DB25 (IC477A-X-R2
AND
IC478A-X-R2)
Converter RS-485 (530) Device
Signal DB25 Pin DB25 Pin Signal
XMTA 2......................................3 RCVA
XMTB 14....................................16 RCVB
RCVA 3......................................2 XMTA
RCVB 16....................................14 XMTB
NOTES
1) In the pinout above “A” means positive and “B” means negative.
4. Installation
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