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TB174 Rev1 CPU10 with PLC15/15 or RTK2
OVERVIEW
Revisions of the CPU10 prior to REV 040914 have a problem at power shutdown if the Linux version software
shutdown is used
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SYMPTOM
Systems using a PLC15/15 or an RTK2 with a Linux based control may see outputs turn on un commanded a
brief moment if the POWEROFF F10 button is used to shut down the control before the main power is
disconnected The outputs are latched for a brief time less than a second then they will all shut off This is a
problem with the CPU10 Rev 040325 board with a CPU711 PIC in U23 required for PLC15/15 or RTK2 REV
040914 boards do not have this problem
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Solution
If the momentary output blip causes an error then the REV 040914 of CPU10 must be used Shutting power
off at the magnetics cabinet will prevent the PLC 15/15 or RTK2 from blipping but this method of power off
may corrupt files in the Linux software system
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Document History
Rev1 Created on 2004 12 02