This message allows the creation and conguration of up to three sets of information tags to be used by an event having the Message ID qualier set to A, B or C. This will make such an event generate an EV reporting message with extra information tags as described on the EV message section.

For example, to set event 49 to send en extended-EV message that includes the vehicle’s acceleration, the number of GPS satellites in view and the state of distance counter 05 whenever the vehicle’s speed goes beyond 55 mph: Define the event. Set it to use extended-EV format A
>SED49NA0;S00+< Define extended-EV format A to include the required tags >SXAEFA;AC;SV;CV05< To delete the extended-EV reporting format send >SXAEFAU<

A trigger is determinated with the logical combination of several situations (also called signals). A logical combination is basically an equation (specifically: a boolean equation) that combines signals (situations) with the logical operators AND, OR and NOT. In Syrus, these boolean equations use the postfixed notation, meaning that the operator is at the end of the signals to be evaluated. When more than three signals are being evaluated, a logical operator must be inserted every two signals in the equation. These are some examples of the postfixed notation syntax:
A or B → AB||
A and B → AB&
A and B and C → AB&C&
To determine how the signals will trigger the report a plus (+) or minus
(-) sign is added at the end of the equation. A plus sign (+) indicates that
the report is generated when a signal or an equation becomes \true”. Consequently, a minus (-) sign indicates that the report is generated when the signal or the equation becomes \false”.

When A or B becomes true →AB||+

When A and B and C becomes false →AB&C& –

If the report must be generated when one signal becomes true and another becomes false one of the signals must be negated using the boolean operator not. Either the plus or minus sign can be used, but for it is easier to understand the equation when the plus sign is used.
When A becomes “true” and B becomes “false” →A!B&+

As described in the previous section, the event machine takes actions like
reporting or switching outputs whenever a user defined trigger goes off. This trigger is configured by the user with the logical combination of situations.

A situations makes reference to a vehicle state which is in fact represented by signals and their state. Syrus’ signals are of boolean nature, meaning that they can only take one of two possible values: true or false. Signals and the logical operators AND, OR, NOT are used to create logical equations to form events’ triggers.
By using the SS TAIP message a signal’s state can be consulted, and de-
pending on the signal’s type, this command can be used also to change the signal’s state.

Note: Signals’ names always have three characters.

Example:

Some examples about the use of the event machine are presented next.

Configuring two events on the Event Machine to generate an ignition report:
The ignition ON event may be defined as:

>SED18NV4;F00+< And the Ignition OFF event: >SED19NV4;F00-< Both events’ routing actions indicate that the destination of the report is the DA 4 and that EV is the reporting message to generate. Both events use a simple trigger consisting of a one-signal-only condition, F00 which is the vehicle’s ignition signal. Configuring an event that uses two signals: For this example we will use signal S00, which is associated with a speed limit and signal J00, which is associated with a heading delta. The event will be triggered when both signals are true, meaning that the vehicle exceeded the speed limit while making a turn greater than the heading delta defined: >SED05NV0;S00J00&+<

Alphabetical characters used to identify messages. The letter V is the standard’s one.

This message allows the creation and configuration of up to three sets of information tags to be used by an event having the Message ID qualifier set to A, B or C. The message has the following format:

A[BBB…]

A: Identifier of the extended-event format being set or consulted. The valid identifiers are: A, B or C.
[BBB…]: Information tag. Enter each tag separated by a “;” character.For more information about tags please refer to Syrus manual.
For example:

To set event 49 to send an extended-event message that includes the cell information, the number of GPS satellites in view and the state of counter 05 whenever the vehicle’s speed goes above 55 mph:

Define the event. Set it to use extended-event forma

>SED49NA0;S00+< Define extended-event format A to include the required tags >SXAEFA;CF;SV;CV05< To delete the extended-event reporting format >SXAEFAU<