IPI 201/204 SIS™ Programming, cont’d
E17 – System timed out
E22 – Busy
E24 – Privilege violation
E26 – Maximum number of connections has been exceeded
E27 – Invalid event number
E28 – Bad filename or file not found
E30 – Hardware failure (followed by colon and descriptor number) (This is an unsolicited response.)
E31 – Attempt to break port
Error response references
The following superscripted numbers are used within the command descriptions on the following pages to identify commands that may respond as shown:
14 = Commands that give an E14 (not valid for this configuration) response if the unit’s current configuration doesn’t support that command.
22 = Commands that yield an E22 (busy) response.
24 = Commands that give an E24 (privilege violation) response if you are not logged in at the administrator level.
27 = Commands that may yield an E27 (invalid event number) response.
28 = Commands that may give an E28 (file not found) response.
Commands and Reponses
Using the command/response tables
The IPI 201/204 Series intercom can be controlled via either a Telnet (port 23) or RS‑232 connection using ASCII commands. Or it can be controlled via a Web browser (port 80) connection
ASCII to HEX Conversion Table
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