User manual SEFELEC 5x Series 185 v1.06
18.1.7. OPERATION FAULT OF THE RS232C SERIES CONNECTION
If the RS232C connection does not work as described in this manual, check the following
points:
Absence of a reaction by the device when commands are sent:
The connection cord between the device in the SEFELEC 5x range and the computer
must be properly connected to both ends and be of the non-crossover type. The
SEFELEC CO179 cord is not compatible with this device.
Devices of the SEFELEC 5x range have several types of possible interfaces, check
in the configuration menu that the RS232 mode has been selected on the INTER-
FACE line.
The End of Message character must be the character LF (hexadecimal: 0A, decimal:
10). If this character is not sent, the SEFELEC 5x device does not process the com-
mand received.
Check that this character is added to the characters of the command sent.
The first command that must be sent is the REM command, the latter is reflected by
the display of an icon symbolizing 2 rings of a chain at the top left of the screen and
the greying out of the keys, the device is then ready to process the other commands.
Warning: The first REM command must not wait for an XON character before
being sent.
The device goes into Remote and then seems to block
Before sending a new command, it is essential to wait until the of the SEFELEC 5x
range device reports its availability by sending the XON character.
If a code arrives during the processing of the previous code, it can cause an incon-
sistent operation of the device or block it.
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