Table of Contents
Advertisement
14
Electronics
LAN/MS Control Card
222
The LAN/MS control card is located to the left of the MSD main
board on the electronics panel. The LAN/MS control card has
two main functions:
• Providing a communication interface between the MSD and
the data system.
• Providing real-time control of the MSD, freeing the data
system for other tasks.
Functional areas of the LAN/MS control card include:
• Instrument controller
• Data processor
• Main processor
• Serial communication processor
• Network communication controller
• Remote start processor
• Random access memory (RAM)
• Status LEDs
• Local Control panel firmware
LEDs on the LAN/MS control card are visible on the rear panel.
The upper two LEDs indicate network communication.
The two bottom LEDs are the power (On, digital 5V) and the
"heartbeat" indicator. The flashing heartbeat LED indicates that
the operating system of the MSD is functioning. In case of
catastrophic loss of flash memory, the heartbeat flashes in an
SOS (•••– – – •••) pattern.
Troubleshooting and Maintenance Guide
Advertisement
Table of Contents
Troubleshooting
