B&B Electronics UNO-2170 Benutzerhandbuch
2.3.6 RS-485 Auto Flow Control Mode and RS-422 Master/Slave
Mode Selection
You can set the “Auto Flow Control mode of RS-485 or “Master/Slave＂ mode
of RS-422 by using the SW3 DIP switch for each RS-422/485 port. In RS-485,
if the switch is set to “Auto＂ the driver automatically senses the direction of
if the switch is set to “Auto＂ the driver automatically senses the direction of
the data flow and switches the direction of transmission. No handshaking is
necessary.
necessary.
In RS-422, if DIP switch is set to “On＂, the driver is always enabled, and
always in high or low status.
always in high or low status.
11 Chapter 2