Install Manual
11
GRANDVIEW PROJECTOR LIFT RS485 SETTING ADDRESS
1. RS-485, RS-232 input
Continuous data send twice, each time with an interval of 200ms
3 bytes of studying address directive are custom setting address directive
Central Control Format Agreement
1. Communication Agreement Setting
Data Bits: 8 bits
Start Bits: 1 bit
Stop Bits: 1 bit
Baud Ratio: 2400
Common directives are in chip of projector lift and can not be changed
2. Directive for retracting: 0xFF 0xEE 0xEE 0xEE 0xC9
3. Directive for stopping: 0xFF 0xEE 0xEE 0xEE 0xCC
4. Directive for extending: 0xFF 0xEE 0xEE 0xEE 0xE9
5. Studying address directive: 0xFF 0xXX 0xXX 0xXX 0xAA
2. Directive Composing Instruction:
oxFF is only bit; ox stands for hexadecimal system; FF is eective bit; a directive is
composed by 5 bits.
Studying directive oxFF oxXX oxXX oxXX oxAA
oxFF and oxAA can not be changed, but oxXX oxXX oxXX can be changed to any 16 hex
data, which stand for address bit
The changed working directive
1. Directive for retracting: 0xFF 0xEE 0xEE 0xEE 0xC9
2. Directive for stopping: 0xFF 0xEE 0xEE 0xEE 0xCC
3. Directive for extending: 0xFF 0xEE 0xEE 0xEE 0xE9
4. Studying address directive: 0xFF 0xXX 0xXX 0xXX 0xAA
Example: The studying directive is oxFF ox10 ox11 ox12 oxAA which can be changed to:
5. Directive for retracting: 0xFF 0xEE 0xEE 0xEE 0xC9
6. Directive for stopping: 0xFF 0xEE 0xEE 0xEE 0xCC
7. Directive for extending: 0xFF 0xEE 0xEE 0xEE 0xE9
8. Studying address directive: 0xFF 0xXX 0xXX 0xXX 0xAA
3. Studying Directive and Operation
After connecting power, studying status will operate within the first 10 seconds. The
studying directive is oxFF oxXX oxXX oxXX oxAA. The screen can be used normally
after study is completed, but the projector lift cannot be used normally after
the address
bit has changed, so that one port can be used to control many projector lifts.
Example: There are projector lift A and B with RS-485 port – if need to control these two
projector lifts synchronously that the directive oxFF oxEE oxEE oxEE oxDD will be sent
out from the port. If need to control these two projector lifts in dierent movement, such
as projector lift A goes down and projector lift B goes up, common directive cannot be
used and separated by address bit at this time.