Command - videotronic HQ-IDC-23012P Operating Instructions Manual

4.7.2.2 Communication flow
Controller
1
ENQ (05h)
2
3 Command sequence
4
5
ACK (06h)
6
Fig. 72 Communication flow
Note: A communicative flow is shown in Fig. 72*.
A controller transmits <1> ENQ for a
connection check. Please carry out and
receive <2> ACK from a camera * (A
connection check is omissible).
A controller transmits <3> Command
sequence to a camera. A camera is it <4>
ACK to receive Command sequence. A
letter is answered and <5> response
sequence to Command sequence is
transmitted further. A controller is
Response sequence. If it receives, please
transmit <6> ACK to a camera. Any
further communication are repeat form
step <3 − 6>.
*RS−485 correspondence
Since it corresponds to the composition
(one to more), which connects two or
more cameras to one controller, ID is
added.
56
23X Auto−focus camera
ACK (06h)
ACK (06h)
Response sequence
Table 1 Serial communication parameter
Transmission 9600 kbps
speed
Data length
8 bit
Parity Nothing
Stop bit 1
Flow control Nothing
Form Synchronous formula
Fig. 73 Serial communicatin parameter
HQ−IDC−23012P
Order No. M578527AC/112003
© 2003 videotronic gmbh
ALL RIGHTS RESERVED
Annex