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8.10. I/O board configuration commands
To be determined.
8.11. Router initiated commands
8.11.1. EDID status changed
Description: This is sent after any command which changed the EDID table (EDID copy,
EDID switch), or after a new EDID source e.g. a new display device is connected to the
router.
Command various
Response (E_S_C) CrLf
Explanation: When a new monitor is connected to an output port, its EDID is read. The
message from the router shows that an EDID has changed.
The router stores the last attached display device's EDID connected to the output. After
Info
disconnecting this device its EDID is still present at the router's memory, therefore no
status change message is issued by the router if a display device having the same EDID
is connected to that output. (The same display device is connected again, or another
display device (same brand) from the same manufacturer).
Info: To keep your application in sync with the router it is recommended to issue a watch
validity ( {wvd}, {wvu}, {wve} ) commands after receiving an EDID status changed
response, and read all location indicating '2' or '3' in the table, as the change of these
EDIDs triggered the (E_S_C) message.
8.11.2. Port status changed
Description: This message is sent when any value changes in the response for the {PS}
command. The message means that an input or output port's state has changed e.g. a
source or display device is connected or disconnected. See XXX for more information.
Command none
Response (PSC) CrLf
Explanation: An input port (which had signal present before) detects no signal. The
router sends a message to indicate port status change.
Info: The (PSC) message can be omitted by third party controller, or it can be used to trigger a
{PS} command. In the latter case, the controller can be up to date with the port status
without continuous queries.
8.11.3. Error responses
Invalid input number
Description: Given input number exceeds the maximum
number of inputs or equals zero.
Invalid output number
Description: Given output number exceeds the installed
number of outputs or equals zero.
Invalid value
Description: Given value exceeds the maximum allowed
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Format
Format
Example
a new monitor is connected to an
output
← (E_S_C) CrLf
Example
an input port looses signal
← (PSC)CrLf
Response
Response
Response
Section 8. Programmer's reference
(ERR01)CrLf
(ERR02)CrLf
(ERR03)CrLf
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