When the Probe (substep 4) is specified as 7, the program step turns the optional load control port off. Substeps 0 - 2 are ignored. Upon power up and changing the rotary switch this port will be on. At start and end of program execution, this port will be automatically set to off.

6.9 Common Programming Issues

6.9.1 Step Numbering

Remember that the first step or substep is 0 instead of 1.

6.9.2 Changing Substep Values

When changing a substep value on the right half of the display, you must use the <CLEAR/ENTRY> key to clear the previous entry from the display before entering a new value. Then enter the new value by keying on keypad, then press <ENTER> to store that new value.

6.9.3 Control Ports

Refrigeration compressor and optional aux/power control ports will return to their default values of On (HI) and Off (LO) respectively upon changing the setting of the rotary switch. However before the start and after the end of a program they will both be LO.

C4 Manual Rev 7.5.2

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Sigma C4 manual Common Programming Issues