Table Of Contents - AXIOMTEK AX10445 Series User Manual

Isolated dual channel rs422/485 interface module
Table of Contents

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1 . 1
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1 . 2
F e a t u r e s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1 . 3
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 2
2 . 1
Installing the AX10445 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 . 2
DIP Switches (Base Address Selection) . . . . . . . . . . . . . . 6
2 . 3
Jumper Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3.1 J P 9 ( I R Q L e v e l S e l e c t i o n ) ................................... 7
r e s i s t o r s ) ......................................................................... 8
2.3.4 JP6 & JP7 (Enable/Disable) ................................ 9
2 . 4
Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 . 5
Signal Wirings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Chapter 3
3 . 1
UART Register Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 . 2
About EIA RS -422/485. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3 . 3
Driver and Receiver Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3.1 D r i v e r D e t a i l ...................................................... 1 9
3.3.2 R e c e i v e r D e t a i l ................................................. 1 9
3 . 4
Isolation Circuit (for AX10445A) . . . . . . . . . . . . . . . . . . . . . . . 20
3 . 5
Termination Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3 . 6
Surge Absorber. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x x

Table of Contents

T a b l e o f C o n t e n t s
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This manual is also suitable for:

Ax10445aAx10445b

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