B&B Electronics 485T ユーザーズマニュアル
Documentation Number 485T1995 Manual
Table of Contents
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B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
TABLE OF CONTENTS
INTRODUCTION ...............................................................................1
RS-422 AND RS-485 STANDARDS .................................................1
CONTROLS AND CONNECTIONS ON THE 485T ..........................6
A
AND
B T
ERMINALS
........................................................................6
G
ROUND
T
ERMINAL
..........................................................................6
T
HRESHOLD
P
OT
..............................................................................7
P
OSITIVE
T
HRESHOLD
E
XCEEDED
LED .............................................7
N
EGATIVE
T
HRESHOLD
E
XCEEDED
LED............................................7
RS-422/RS-485 S
WITCH
.................................................................8
T
ERMINATION
S
WITCH
......................................................................8
P
OWER
............................................................................................8
RS-232 D
ATA
O
UT
C
ONNECTOR
......................................................8
RS-422/485 TEST .............................................................................9