CityGrow CG102RS232, User Manual

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17
6.3 Device Status Request
The general PDU format of the status response is shown in Figure 4-19.
Device
Status
1 byte
Cmd
DeviceID
1 byte 3 bytes
0x04
Result
1 byte
No Of
Device
1 byte
Device
Status
1 byte
DeviceID
3 bytes
……
Status Info of device 1 Status Info of device 2
Figure 6-22 General PDU format of status response
The PDU of the status response comprises of different fields, which are summarized in the
following table (Table 4-6):
Table 6-6 Summary of fields in the PDU of status response
Field Description Size
Cmd Status Response Command 1 byte
Result SUCCESS/FAILURE 1 byte
No of Device Indicate number of device status 1 byte
DeviceID The device ID of response device 3 byte
Device Status The status of response device 1 byte
In the device status response PDU, multiple sets of device status information
(DDeviceStatus) may present in one PDU when the responding device has more
than one control end-point (e.g. the two-gang switch). The number of set of device status
information is indicated by the field “No Of Device”. Within a set of device status information,
1 byte of Device Status (DeviceStatus) is expected follow the DeviceID to indicate status of
the target device. The status of device are shown in Table 4-7
Table 6-7 Device status
DeviceStatus
Description
Name Code
STATUS_OFF 0x00 Device status is OFF
STATUS_ON 0xFF Device status is ON
STATUS_DIMMING_LEVEL 0x00 –
0x64
Indicate the dimming level from 0% to
100% (Dimmer only)