Specifications

APPENDIX C: EVENT PROGRAMMING
Page 181 MRC-565 Packet Data Radio Operations & Maintenance
Event Programming Overview
Event programs are composed of signal test and action commands stored in a non-volatile event
table. The MRC-565A stores the event table in battery-backed-up-RAM. The MRC-565 and
MRC-565C store the event table in FLASH memory.
The operator enters these event commands into the MRC-565. The MRC-565 scans the event
table at power-up/reset, and then at every 1/16 second clock interval. It looks for the occurrence
of defined events. When a defined event occurs, the MRC-565 invokes the corresponding action
commands. The capability includes:
• Testing discrete input lines
• Setting or clearing a discrete output line
• Testing Analog input values
• Transmitting brief text messages
• Execute a local command of up to 40 characters
• Transmitting vehicle position reports
• Transmitting marker drop reports
• Transmitting vehicle collision reports
• Transmitting canned message reports.
• Defining sensor data (SDATA) groups
• Transmitting sensor data (SDATA) reports
• Setting or clearing the MDP Status Bits
• Setting or clearing and testing 5 timers
• Testing GPS status as a discrete input
• Testing Network status as a discrete input
• Setting or clearing and testing counters
• Setting or clearing and testing 2 high-speed counters
• Outputting pulses and square waves (pulse modulation)
• Reading and counting pulse inputs
• Max, Min, Average or other real-time signal computations
The position, marker drop, collision and canned message reports created conform to the
FleetTrak standard. In addition other status bits can be set or cleared individually. Up to 16 data
report groups can be defined for SDATA formatted data report generation.
The MRC-565 event monitor reads discrete and analog inputs and evaluates them with respect to
event definitions in the event table. It can look for discrete input signals going persistently high
or low, and for analog signals persistently exceeding or under running thresholds.