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SCP-initiated Messages
At power-up, the following SCP-initiated message appears:
(c) Copyright 20nn, Extron Electronics, SCP 104 [or 226],
Vn.nn
NOTE: This message is displayed only at power-up.
When a local event such as a front panel selection takes place,
the SCP 104/226 responds by sending a message to the host
indicating what selection was entered (see “Switch responses”
in the Command and Response Table for Special Function SIS
Commands on page 38).
No response to these messages is required from the host.
Error Responses
When the SCP 104/226 receives a valid SIS command, it executes
the command and sends a response to the host device. If the
SCP is unable to execute the command because the command is
invalid or contains invalid parameters, the SCP returns an error
response to the host.
Error response codes and their descriptions are shown below.
Each error response is followed by a carriage return.
E10 – Invalid command
E13 – Invalid command parameter
E23 – Bad checksum
E28 – Bad filename/File not found
Using SIS Commands
SIS commands can be used with the SCP 104/226 only when it is
in standalone mode; that is, DIP switch #1 on the rear panel is
in the On (up) position. The available commands enable you to
test the front panel LEDs and buttons, and to query for certain
information about the SCP.
NOTE: You cannot program SCP buttons or switches using
SIS commands. The SCP buttons reflect only what is
programmed for the MLC or the System 5 IP to which
the SCP is connected.
32 SCP 104 and SCP 226 • Remote Communication