EARTfelt Greetings, dear friends of the protection and control engineering, The company Schneider Electric GmbH is currently warning its users about unexpected device behavior of the Easergy MICOM P30 series with direct, serial connection to the operating program S & R-103. In order to make the facts as neutral as possible to you, you can read the content of the original message below,
HEARTfelt Greetings Alexander Muth
With this letter, we would like to draw your attention to an unexpected device behavior of our Easergy MiCOM P30 in conjunction with a direct, serial connection to the S & R-103 operating program.
Affected all Easergy MiCOM P30 devices from firmware -650.
Description of the behavior:
In case of direct, serial coupling with a control cable, in connection with an incorrectly terminated termination of the RS232 interface on a PC / laptop or interface replicator, an unexpected device behavior has been observed when executing a control command at the on-site control panel.
Due to the incorrectly terminated termination of the RS232 interface, the device is simulated ongoing communication with the operating program and thus temporarily blocked the execution of switching commands entered via the VOB. When disconnecting the direct connection, the termination of the RS232 interface is canceled and thus also the command blockade, so that now the switching command entered via the VOB is executed.
The device behavior described does not occur when using a USB-RS232 adapter. We therefore recommend to use only a USB-RS232 adapter for the connection between Easergy MiCOM P30 devices and our operating program S & R-103 and no serial connection.
Furthermore, we would like to inform you that the behavior described above does not occur when using the current operating program Easergy Studio (Version 7.0.0 or higher) in conjunction with a serial link or a USB-RS232 adapter. We therefore recommend using the current operating program.
For the future, we will include the following safety notice in our operating manuals for the Easergy MiCOM devices (see story picture).