Black Box IC108C, IC109C, IC109AE, IC109A-R2, IC108AE manual Appendix A. Pinning, Dce Dte

RS-232↔485/422 CONVERTERS

Appendix A. Pinning

Table 3. RS-232 interface

(* denotes pins that are used).

Pin	Circuit	Description	Signal Type	Direction
				when configured as
				DCE	DTE
1*	AA	Protective Ground	Ground	-
2*	BA	Transmitted Data	Data	Input	Output
3*	BB	Receive Data	Data	Output	Input
4*	CA	Request to Send	Control	Input	Output
5*	CB	Clear to Send	Control	Output	Not connected
6*	CC	Data Set Ready	Control	Output	Not connected
				(held
				high)
7*	AB	Signal Ground	Ground	-
8*	CF	Data Carrier Detect	Control	Output	Input

NOTE

Pins 9 through 25 are not used.

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