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2.1.2 IO Module
The IO module is mounted inside the compressor control cabinet and connects to the display via RS485
communications and houses all of the terminations for the analog and digital input and output signals. These
values are monitored and controlled by the display to operate the compressor. The IO module also contains
RS485 communications ports for customer connection and sequencing with multiple machines.
Figure 2: IO Module
The IO module is shown in Figure 2 above. Note that depending on the type of compressor you have, your
IO module may have more or less inputs and outputs present on it, indicated by the amount and size of
connectors on the board.
