The System of Events Recorder (SER) cards are designed to operate independently or with the Modicon Quantum and 984 Series PLCs. In addition to acting as standard 32 point input cards to the PLC, the cards provide a permanent record of high speed events which occur within milliseconds of each other. The SER will provide a time and date stamp for the event, the type of event, the state of the input point, and address of the input point. Multiple SER cards may be synchronized together to provide a distributed event recording system accurate to 1 millisecond.
Each of the SER cards will sample the input points every millisecond, digitally filter the data to remove contact bounce and noise, and build a buffer containing a time stamp and the point identification of any points that have changed. The design of the SER cards virtually eliminates the nuisance of false alarms. The SER cards will automatically delete noisy points from scan and reinsert them at a later time.
Common features of all card types include:
Each SER point can be individually configured
The SER card
generates the following