Echelon Neuron C Manual do Utilizador descarregar pdf (Página 75)

Neuron C Programmer’s Guide 63

Example:

network input SNVT_temp nviCurrent;

network input SNVT_temp nviSetpoint;

network output SNVT_volt nvoValve;

eeprom uninit SNVT_temp lastGoodCurrent, lastGoodSetpoint;

when(nv_update_occurs(nviCurrent)) {

lastGoodCurrent = nviCurrent;

nvoValve = algorithm(lastGoodCurrent, lastGoodSetpoint);

}

when(nv_update_occurs(nviSetpoint)) {

lastGoodSetpoint = nviSetpoint;

nvoValve = algorithm(lastGoodCurrent, lastGoodSetpoint);

}

• After power-up or reset, track which network variable has been updated,

and execute the algorithm only after all required input data has arrived.

Example:

#define CURRENT_OK 0x01

#define SETPOINT_OK 0x02

#define ALL_OK (CURRENT_OK | SETPOINT_OK)

unsigned received;

network input SNVT_temp nviCurrent;

network input SNVT_temp nviSetpoint;

network output SNVT_volt nvoValve;

when(nv_update_occurs(nviCurrent)) {

received |= CURRENT_OK;

if (received & ALL_OK == ALL_OK) {

nvoValve = algorithm(lastGoodCurrent, lastGoodSetpoint);

}

when(nv_update_occurs(nviSetpoint)) {

received |= SETPOINT_OK;

if (received & ALL_OK == ALL_OK) {

nvoValve = algorithm(lastGoodCurrent, lastGoodSetpoint);

}

After power-up, poll both input network variables, thus explicitly

requesting that the data sources resend their most recent value. This

solution is popular, simple, and straight-forward.

Example:

network input SNVT_temp nviCurrent;

network input SNVT_temp nviSetpoint;

network output SNVT_volt nvoValve;

when(reset) {

poll(nviCurrent);

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 267 268

Comentários a estes Manuais

Sem comentários

Echelon Neuron C Manual do Utilizador Página 75

Comentários a estes Manuais

Manuais e produtos relacionados com Software Echelon Neuron C