Black Box RS-232485/422 Converter Plus, RS-232485/422 Opto-Isolator/Converter, IC109C XW1A, XW1B

RS-232↔485/422 CONVERTERS

Quick Reference:

User-Selectable Options

Use this list as a quick-reference guide when you need to change the jumper settings.

An asterisk (*) designates the factory-preset jumper settings.

XW1A	DCE*
XW1B	DTE
W8	A-B*	4-wire
	B-C	2-wire
W15	A-B*	RTS/CD enabled
	B-C	Data enabled (Maximum speed is 64K.)
W5	A-B*	RTS/CTS* delay (normal)
	B-C	RTS/CTS/CD delay (CTS inhibited if CD
		is present when RTS is raised.)

W9 RTS/CTS delay (The time before the RS-485 driver is enabled and

CTS is asserted after RTS is asserted. The RS-485 driver is always enabled.)

A	30 msec
B	10 msec
C*	0 msec
D	ON

W17	When W15 is in the B-C (Data Enabled) position, this is the time
	the RS-485 driver remains enabled after a low-to-high transition on the
	DATA line to prevent disabling the driver in the middle of a character.
	A	70 msec
	B*	7 msec
	C	2 msec
	D	0.7 msec
	E	0.15 msec

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