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Table of Contents
CHAPTER 1
CM312 C
OMMUNICATIONS UTILITY
M
ODULE
...........................................................................................................2
Features...............................................................................................................................................................2
Connectors and Switches.....................................................................................................................................3
Recommended Cables..........................................................................................................................................3
General Specifications.........................................................................................................................................3
Jumpers and Switches..........................................................................................................................................4
Locations..........................................................................................................................................................4
Default Settings................................................................................................................................................5
Descriptions.....................................................................................................................................................6
E
THERNET
EEPROM C
ONFIGURATION
....................................................................................................................8
Default Settings....................................................................................................................................................9
CHAPTER 2
INSTALLING THE UTILITYMODULE .........................................................................11
R
ECOMMENDED
P
ROCEDURE
.................................................................................................................................11
F
INDING
P
IN
1
OF
C
ONNECTORS
.............................................................................................................................11
Locations ...........................................................................................................................................................12
PC/104 B
US
C
ONNECTORS
, CN1
AND
CN2 ...........................................................................................................13
F
IRST
COM
PORT
, CN3..........................................................................................................................................14
RS422 and RS485 Mode Pinout.........................................................................................................................16
Notes on using RS422 or RS485 Modes.............................................................................................................17
S
ECOND
COM
PORT
, CN4......................................................................................................................................17
T
HIRD
COM
PORT
, CN5.........................................................................................................................................17
F
OURTH
COM
PORT
, CN6......................................................................................................................................17
Base Address of Common Registers...................................................................................................................18
Common Register definitions.............................................................................................................................19
10B
ASE
-T
CONNECTOR
, CN8.................................................................................................................................21
10B
ASE
-T
CONNECTOR
, CN10...............................................................................................................................21
10B
ASE
-2
CONNECTOR
, CN14 ...............................................................................................................................22
P
OWER
P
ROTECTION
C
IRCUITRY
............................................................................................................................22
Module Power-Supply Protection..................................................................................................................22
CHAPTER 3
USING THE UTILITYMODULE SERAIL PORTS........................................................23
EXAR D
OCUMENTATION
.......................................................................................................................................23
1.5 M
BPS SUPPORT
.................................................................................................................................................23
I
NTERRUPT
S
HARING
..............................................................................................................................................24
CHAPTER 4
USING THE UTILITYMODULE ETHERNET PORTS.................................................26
D
IAGNOSTIC
LED
S
.................................................................................................................................................26
COL LED...........................................................................................................................................................26
LNK LED...........................................................................................................................................................26
B
OOT
ROM S
OCKET
..............................................................................................................................................26
P
OWER
C
ONSUMPTION
...........................................................................................................................................27
CHAPTER 5
SOFTWARE INSTALLATION.........................................................................................28
S
OFTWARE INSTALLATION
......................................................................................................................................28
T
HE
CM312SET P
ROGRAM
...................................................................................................................................28
Using CM312SET..............................................................................................................................................28
INTRODUCTION .................................................................................................................2