RS-485 witth WIZ120SR or WIZ127SR


#1

The WIZ127SR explicitely claims to support RS-485 by providing the direction signal by RTS while CTS is ignored. May I use the WIZ120SR and apply CTS active or should I better employ the WIZ127SR. For the WIZ127 the manual informs about the exact positions of the 3 12-pin headers J1, J2 and J3 but does not tell which is which and on the photo, one of them is unpopulated. Is that module ready?


#2

Hello,

Please refer to below image and “2.4.2 RS485/422” section of user manual version 1.11.
[attachment=0]pin_wiz127sr.jpg[/attachment]