- The PM74 OPSW41= C will change the 4 DS1-4 led display, so each DS led now reports the same way the PM42 leds did. This is a Legacy option provided for users who want the PM74 indications to be similar to the PM42. The default OPSW41 =T has the DS led light ON for resistance Occupancy detection within that DS, and will flash when a Transponder is present in that DS. These 2 additional DS detection capabilities and indication were NOT present in the PM42. Whatever the OPSW41 state is, LocoNet messages will report Power state/action, Occupancy and Transponding messages to a connected LocoNet, based on OPSW11/12/13 settings.
- PM74 OPSW13 =C will turn OFF Power messages to LocoNet from this PM74 (i.e. Short circuit begin/end and Autoreverse actuations) but these Power functions will still operate.
- PM74 OPSW12 =C will turn off the Transponding detection function and messages, but not change Short circuit or autoreverse functionality.
- PM74 OPSW11 =C will turn off the Block Occupancy detection function and messages, but not change Short circuit or autoreverse functionality.