Accessing Specific Channels Or Inputs; Flow Control; Network Operation - Christie Entero RPMWU User Manual

Appendix C: Serial Command Overview
C.2.5 Accessing Specific Channels or Inputs
For several commands (for example, ASR, Auto Channel Select) you can direct the message to particular
channel, input or image. To do this, include a subcode after the function code.
Example:
(ASR 1)Enable Auto Channel Select for the channel being used by the Main image
(ASR+MAIN 1)Enable Auto Channel Select for the channel being used by the Main image
(ASR+PIIP 1)Enable Auto Channel Select for the channel being used by the PIP image
(ASR+C003 1)Enable Auto Channel Select for channel 3
(BBL+IN12 30)Set the bottom blanking value on slot 1 input 2 to value 30
It is only possible to set parameters from a specific channel or input if that parameter is stored separately for
each channel or input. This function cannot be used for parameters that are specified for the projector as a
whole such as projector address. The serial commands listed in the document specify which subcodes are
applicable to each function.
C.2.6 Flow Control
Normally messages can be sent to the projector before processing of earlier messages is complete—the
projector will just store messages in a buffer until ready to process. However, if a series of messages is sent it is
possible that the projector may not be able to process them as fast as they arrive and the buffer will become
full. If this happens, the projector will send the 13h (Xoff) code to instruct the controller (or any devices
preparing to transmit) to cease transmission. At this point, the controller must respond immediately and send
no more than 10 extra characters or they may be lost (i.e., the projector is able to accommodate the receipt of
up to 10 more bytes after it sends 13h (Xoff)). When the buffer is once again available, the projector will send
a 11h (Xon) command to resume transmission.
Xon and Xoff controls apply to both directions of communication. The projector will not send more than 3
NOTE:
characters after it has received a 13h (Xoff) code.
C.2.7 Network Operation
Up to 1000 projectors can be linked together in a chain with the 'OUT' port on one connected to the 'IN' port
on the next. A controller connected to the 'IN' port on the first projector can control them all, either by
broadcasting messages which have no address and are thus seen by all projectors, or by directing messages to
specific projector addresses.
To work with a specific projector in a group, the projectors must first be assigned a unique I.D.—either a
projector number or an Ethernet IP address. Insert the number of the target projector between the starting '('
and the 3-character ASCII code.
Table C.3 - Message for Specific Projector
Each projector compares the message address with its own address and, if matching, responds and processes
the message. If the address does not match, the message is passed on until it reaches the intended projector.
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Entero RPMWU/RPMSP/RPMHD-LED01 User Manual
020-100367-05 Rev. 1 (06-2012)