1230. 2(g) 1230.2( g) invalid data, communication failure recoveries, alternating current power failures, power recoveries, pixel status reads, fan and filter airflow status where applicable, temperature status, power supply status, and information on the operational status of the temperature, photocell, airflow, humidity, sign door opening and LED power supply sensors. Report airflow and humidity sensor information us ing the objects from the dmsClimateCtrlStatusTable of the NTCIP 1203 V3 standard. Fiber Optic modules or Fiber Optic Small Form Factor electronics, or fiber optic -to-copper (Cat.6) media converters, and their associated power supplies, must be temperature hardened and meet the environmental operating requirements as specified in 1230.2(d)5.
• Master operation, where the TMC/RTMC commands and controls the sign and determines the appropriate message or test pattern.
• Local operation, where the sign controller or a laptop computer commands and controls the sign and determines the appropriate message or test pattern.
For walk -in signs, keep electronic components away from the access door to protect them from the elements. For front and rear -access signs, keep electronic components away from the access panels where possible to protect them from damage or corrosion due t o exposure to the elements. Provide C MS capable of perf orming the following functions:
• Control Selection. Provide local/remote switch on the local control panel that functions in parallel with the local/remote switch located in the ground control box. Provide a LED indicator near the local/remote switch to indicate if either switch has selected the local mode. The operating mode is determined by the position of the mode switch on the local control panel. If the local control panel’s switch is set to local, the operating mode is local. Otherwise, the operating mode is master.
• Message Selection. Use keypad to select a blank message or any one of the messages stored in the sign controller’s nonvolatile memory if the control mode is set to local.
• Message Implementation. Activate the selected message.
Provide sign controller that transmits a return message to the TMC/RTMC whenever it receives a valid status request. Return messages must contain an Internet Protocol (IP) address for the sign controller, the actual message that is visibly displayed on the sign, the displayed message’s transmission origin (i.e., the TMC/RTMC, laptop computer, manual entry, etc.), remote or local control status, error and failure reports, temperature readings, access alarms, power supply voltage levels, line voltage, and Uninterrupted Power Supply ( UPS) status .