7
STATUS REPORT
A status report is an 8 byte report received by the host on the Input interrupt endpoint
whenever the device changes state. When the host requests an interrupt packet and no
status change report is pending, the unit will respond with a NAK reply. A status report
can be made pending by the host by using the operational command RequestStatus.
Status report:
byte open;
byte alarm;
byte padding[6];
The open parameter will have a value of 1 or 0. A 1 indicates that the relay is powered
open.
The alarm parameter is reserved for future development.
OPERATIONAL COMMANDS
Operation Command report:
byte cmnd;
byte data[7];
OpenRelay
cmnd = 0x01
parameters:
none
The relay is activated and the duration timer started.
CloseRelay
cmnd = 0x02
parameters:
none
The relay is de-activated and the duration timer dismissed.
OpenRelayDuration
cmnd = 0x03
parameters:
byte padding;
32bit duration;
// in 1/20 second increments
The relay is activated and the duration timer started. However, the configured duration
is overridden with the supplied duration. This command is useful to open the relay
“indefinitely” by setting the duration parameter to a large value.
