A tension monitoring assembly or device permanently installed between a connection or anchor point and a guy cable line or structural rod allows constant monitoring and increase confidence that the guy cable or structural tension rod remains tensioned to the proper value. The EMS stores base version data that describes the data model of a first version of a service application installed on a network element. The device controller can include a DPS status register that can be read by a processor, to indicate the current DPS, and a DPS control register that can be written by the processor, to change the current DPS to a desired DPS. In one embodiment, the computing system determines whether two or more of the blade servers should be stitched together. The third lens is a positive lens with having a larger curvature radius facing the objective side. The drive member may positively drive the driven member in two directions, and the driving of the driven member may actuate the pump device.