Do you have the HS34 installed? The manual says that the EMS Contacts are not available unless it is.
Perhaps you can use one of the General Purpose contacts instead if they are available, at least for a test.
Under the CONTACTS section of the D180 manual:
"Note that while contacts are shown below the HS34 INPUTS section, they are not available until you purchase and connect an HS34 expansion module. Ensure you are configuring in either of the two EMS CONTACT menus.".
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