stations cannot be programmed as decoders and must be wired conventionally to the 4-
station master module. This leaves stations 5–32 available for EZ decoder operation. This
allows for hybrid conventional/decoder operation. If only EZ decoders are to be used, there
are 28 total stations available, and the first station must be programmed as station 5.
As shown below, if stations 1–4 are conventionally wired, then stations 5–32 would be
available for two-wire via PC-DM. Similarly, a 3-station PCM-300 expansion module could
be added to the second station output slot, which would allow for stations 1–7 to be
conventionally wired, and stations 8–32 available for two-wire.
Installing Additional Station Modules
1. Slide the POWER LOCK into the POWER OFF (unlocked) position. Insert any
additional station modules into the appropriate output slots.
2. Once all of the modules are in place, slide the POWER LOCK into the POWER ON
(locked) position to energize and secure the modules into the controller.
3. The HPC will automatically recognize the correct number of stations. In some cases, it
may be necessary to press the reset button on the back of the face pack or cycle
power to the controller.
EZ-1 Decoder Connections and Programming
1. Remove wire insulation, and insert red and blue wires from the decoder into the
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