User's Manual

PCS3_HD_v01.000-03
Confidential / Preliminary
Page 29 of 101
2013-10-21
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PCS3 Hardware Interface Description
3.3 Power-Up / Power-Down Scenarios
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3.3.5 Automatic Shutdown
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Automatic shutdown takes effect if:
• The PCS3 board is exceeding the critical limits of overtemperature or undertemperature
• Undervoltage or overvoltage is detected
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The automatic shutdown procedure is equivalent to the power down initiated with the AT^SMSO
command, i.e. PCS3 logs off from the network and the software enters a secure state avoiding
loss of data.
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Alert messages transmitted before the device switches off are implemented as Unsolicited Re-
sult Codes (URCs). The presentation of the temperature URCs can be enabled or disabled with
the AT commands AT^SCTM. The URC presentation mode varies with the condition, please
see Section 3.3.5.1 to Section 3.3.5.3 for details. For further instructions on AT commands refer
to [1].