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Converts RS-232 signal to RS422/485 compatible signal
This review is from: SIIG ID-SC0011-S1 RS-232 to 422/485 Converter - OEM
Pros: I have used it in a half-duplex mode over a short distance (10's of feet) to provide an interface between a computer and a serial encoder and it works just fine in this application. It is powered from the handshaking lines of the RS-232 interface assuming a full 9-wire interface is used.
Cons: The RS-232 standard distinguishes between two major categories of equipment: DTE (data terminal equipment, like terminals, printers or computers) and DCE (data communication equipment like modems). Between every two pieces of DTE there needs to be one piece of DCE to flip the transmit/receive wire pairs between the two terminal devices. DTE is supposed to use male SubD connectors while DCE is supposed to use female SubD connectors.
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