Terminal Unit Control (TUC)
Reading the
Operating Control
Mode
Using the human interface, read the operating control mode.
1.Read and record the initial TUC address.
2.Set the TUC DIP switch #5 and #7 to ON (address = 10). The remaining switches will be off.
3.Short and hold the test input.
4.The LEDs will blink to define an operating control mode. The operating control mode information will be displayed in a series of three blink sequences.
Sequence 1: With the test input shorted continuously, all
LEDs go off for one second.
Sequence 2: LED #5 will light to indicate that sequence 2 is currently displayed. LEDs one through four will display the first part of the operating control mode.
Sequence 3: LED #6 will light to indicate that sequence 3 is currently being displayed. LEDs one through four will display the second part of the operating control mode.
5.Refer to Table 26 on page 77 to interpret the operating control mode derived from the blink sequences.
6.After reading and recording the operating control mode, return the DIP switches to the positions recorded in step 1. Short the test inputs to set the address in the TUC EEPROM.
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