Toshiba Programmable Logic Controller V200 - Manual (Page 17)

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The failure of external or ancillary components may cause intermittent system operation,
i.e., the system may start a motor without warning or may not stop on command.
• There may be thermal or physical properties, or ancillary devices integrated into the
overall system that may allow the V200 to start a motor without warning. Signs at the
equipment installation must be posted to this effect.
• The operating controls and system status indicators should be clearly readable and
positioned where the operator can see them without obstruction.
• Additional warnings and notifications shall be posted at the equipment installation
location as deemed required by Qualified Personnel.