Setting Up Rs3 Communication; Establish Communication; Connect To The Projector; Rs232 Communication Parameters - Projectiondesign cineo Supplementary Manual

4 SETTING UP RS3 COMMUNICATION

4

ESTABLISH COMMUNICATION

The projector may be controlled either through the LAN or the RS232 interfaces. Both
interfaces can not be used at the same time. Select between LAN or RS232 control in the
menus system (se the projector user guide for further information).
4.1

Connect to the projector

Connect the projector and host using a standard serial cable with 9-pin female to the host,
and 9-pin male to the projector. Pin 2 connects to pin 2, pin 3 connects to pin 3 and pin 5
connects to pin 5.
The projectors can be daisy-chained using RS232. Please, refer to Appendix C for de-
tailed information about RS232 daisy-chaining.
4. RS3 Communication parameters
Parameter
Baud rate
Parity
Databits
Stopbits
Flowcontrol
Table 1: RS232 parameters
Baud rate is configurable from the projector's menu system. Default baud rate is 19200.
8
Data
4800, 9600, 19200
N
8
1
None

5 SEND AND RECEIVE BINARY PACKETS

This section applies to single projector control with no address information. Please, refer
to Appendix B for detailed information about RS232 daisy-chaining.
5.1

About the protocol

The RS232 protocol is a binary protocol where each command is a series of 32 bytes in
one packet. See Appendix A for command structure. The tables in appendix B have one
row for each command.
The packet consists of a header with 7 bytes, and the packet payload, 11 bytes (see ap-
pendix A). It is important to complete the packet with an additional 14 bytes of padding,
so that the total packet size reaches 32 bytes.
The bytes are numbered 1 through 32. Byte 1 is sent first, byte 32 last. Some columns in
Appendix B show the value to be sent for several consecutive bytes. These are typically
indicated by a range, ie. 14 - 16. This means that bytes 14-16 all have the same value.
The protocol allows for both SET and GET operations. To utilize GET operations the host
needs a routine for receiving and interpreting incoming packets.
5.

SET_operations

SET_operations are used to force the projector into different modes, like setting bright-
ness and contrast setting, switching between sources, etc.
As seen in Appendix B, each packet is a series of 32 bytes. To control the projector,
simply send the desired packet to the serial port. (An example of how to do this from a
DOS-window is provided in chapter 5.7)
After receiving a packet and executing the operation, the projector will immediately send
a packet in return. The returned packet will contain a PAK (0x1E) (PAK = Packet Acknowl-
edge), followed by the initial SET_operation sent from the host. Total packet size is 33
bytes.
5.3

GET_operations

GET_operations are used to acquire data or status from the projector, such as lamp us-
age hours, total on time, etc.
A response to a successful GET_operation consists of a PAK (0x1E) followed by the initial
GET_operation sent from the host. The requested value resides as a WORD in byte 17
(low byte) and byte 18 (high byte). Total packet size is 33 bytes.