CityGrow CG102RS232, User Manual

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If the target device is found and such device is supporting auto status update, following
PDU will be return from the CG102RS232:
Cmd
DeviceID
1 byte 3 bytes
Device
Type
1 byte
0x84
Result
1 byte
0x00
Figure 6-32 Response PDU format for disabling the auto status update successfully
Otherwise, following PDU will be return from the CG102RS232 to indicate the request action
is failed:
Cmd
DeviceID
1 byte 3 bytes
Device
Type
1 byte
0x84
Result
1 byte
0x01
Figure 6-33 Response PDU format when disable the auto status update failed
6.5 ZDCP Version Enquiry
To enquire the version of ZDCP of a CG102RS232, following PDU (only comprises of Cmd
field) is required send to CG102RS232:
Cmd
1 byte
0xF1
Figure 6-34 Request to enquire the ZDCP version of CG102RS232
If the ZDCP of the CG102RS232 is version 1.2 or above, following PDU is expected to be
returned from CG102RS232:
Cmd
1 byte
0xF2
Version
4 bytes
Figure 6-35 Responding PDU of ZDCP version enquiry
In the response of ZDCP version enquiry, 4 bytes of ASCII code are following the Cmd field.
The 4-byte ASCII code is used to indicate the version number of the ZDCP within the
CG102RS232. The first two ASCII code are the version number before the decimal point
and the last two are the version number after the decimal point. For example, when the
version of ZDCP is 1.2, the response ASCII code will be {‘0’,’1’,’0’,’2’} (Figure 4-27).
Cmd
1 byte
0xF2
Version
4 bytes
0x30 0x31 0x30 0x32
Figure 6-36 Responding PDU of ZDCP version enquiry form a CG102RS232 with ZDCP version 1.2