
4 GENERAL D20MX HARDWARE USER’S MANUAL
TABLE OF CONTENTS
INSTALLING THE
D20MX
D20 chassis layouts .....................................................................................................29
Installation steps..........................................................................................................31
Retrofitting the D20MX in an existing D20 ..............................................................33
Required tools and materials.....................................................................................35
Grounding the D20MX .................................................................................................36
Unpacking the D20MX .................................................................................................36
Package contents ..........................................................................................................................................36
Connecting the power supply ....................................................................................37
CONNECTING TO
DEVICES AND
NETWORKS
Cabling overview ..........................................................................................................39
D20MX front panel connectors ...............................................................................................................39
General cabling requirements.................................................................................................................40
Serial ...............................................................................................................................41
D.20 Link.........................................................................................................................41
Twisted-pair Ethernet (for 526-3001 only)...............................................................42
Fiber optic Ethernet (for 526-3003 and 526-3005LF only).....................................43
LAN redundancy ...........................................................................................................44
IP addresses ..................................................................................................................44
RS-232.............................................................................................................................47
D20 system redundancy .............................................................................................47
Failover sequence..........................................................................................................................................49
Required components .................................................................................................................................49
RS-232 switch panel operation ...............................................................................................................50
Redundancy wiring diagrams..................................................................................................................50
POWERING-UP AND
TESTING
Required for testing .....................................................................................................53
Accessing WESMAINT II+ using a terminal.........................................................................................54
Terminal Emulation.......................................................................................................................................54
SHELL...................................................................................................................................................................54
Power up and test steps..............................................................................................54
Set up a PC to act as a WESMAINTII+ terminal.......................................................55
Power up the D20MX....................................................................................................55
Automatic on-line start-up test.................................................................................55
Code and configuration files ....................................................................................................................56
Further testing.................................................................................................................................................56
Test for redundancy.....................................................................................................56
Check that fail-over is functioning correctly...........................................................57
Check that switch-over is functioning correctly ....................................................57
Verify either hardware or software switch-over ....................................................58
CONFIGURING THE
SOFTWARE
Introduction to the D20MX software ........................................................................59
D20MX user accounts .................................................................................................59
Default user ......................................................................................................................................................60
Recovery mode users ..................................................................................................................................60
Download image files to the D20MX.........................................................................61
When to download........................................................................................................................................61
Prerequisites for image download.........................................................................................................61
Download software over a serial connection...................................................................................62
Download software over a network connection ............................................................................64