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Device Connection Methods

	Device to HW4 PC: ► Ethernet (TCP/IP) wired: this is the recommended      method because of its reliability and flexibility ► Ethernet (TCP/IP) wireless: installation can be difficult      due to wireless security requirements. May not be      reliable enough for critical data (loss of communication      issues) ► USB port: easy to establish but not reliable enough for      critical data. Usually not suitable when data has to be      accessed by multiple users ► Serial port (RS-232): reliable but outdated. Usually not      suitable when data has to be accessed by multiple users
	Device to device: ► Any device can be connected to another device by      RS-485 (up to 64 devices per RS-485 multi-drop)      RS-485 Pros and Cons:     ● Reduces the connection cost per device     ● Can be detrimental to the overall system reliability:         one faulty device can bring down all devices in the         RS-485 network     ● May result in communications problems in a multi-user         system, whenever a RS-485 device is simultaneously         polled by several PCs