Comparing UCOS Controllers and Data Servers

UCOS has a controller and data server for every application. To help you see where each one fits, here is a chart comparing their major features.

	FCU	microFCU	FDS	SDS
Usage	Controller	Controller, RTU	Controller, concentrator	Controller, concentrator
Application	High point count	Low point count	Low point count	High point count
Form factor	PLC or Industrial Controller	Small-footprint PLC	Industrial Controller	Industrial Controller
Directly scans I/O	Yes	Yes	Yes	Yes
Directly scans devices	No	No	Yes	Yes
Works with other control systems	No	No	Yes	Yes
Regulatory & sequential logic	Yes	Yes	Yes	Yes
Interlocking	Yes	Yes	Yes	Yes
POSIX-compliant operating system	Yes	Yes	Yes	Yes
Available redundant	Yes	Yes	Yes	Yes
Low-voltage, remote applications	No	Yes	No	No
Works with 3rd party, custom software	Yes	Yes	Yes	Yes
OPC, API, DDE	API, DDE	API, DDE	OPC, API, DDE	OPC, API, DDE
Serial and TCP/IP	No	TCP/IP	Yes	Yes
COM ports, polling lists	No	No	Yes	Yes
RS-485 multi-drop slaves	No	No	Yes	Yes
Poll list per port	No	No	Yes	Yes
Unsolicited write	No	No	Yes	Yes