9 Chapter 2
2.1.4 Jumper Settings
You can use JP1 on ADAM-4561 to configure serial mode. Please refer to
the picture below for Jumper JP1 location.
You can choose “On (RS-422 Master)” or “Auto (RS-422 Slave/RS-485
Automatic Direction Control)” for serial mode. Please refer to the picture
below.
For RS-485, if the JP1 is set to “Auto”, the driver automatically senses
the direction of the data flow and switches the direction of transmission.
Handshaking is unnecessary. For RS-422, if the JP1 is set to “Auto”, it
will become RS-422 slave. If the JP1 is set to “On”, the driver is always
enabled, and always in high or low status. The user must select the mode
before beginning RS-422 application.
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