My digital line passing works with 2 s1 xbees but once I set sm =1 the line passing functionality stops working. I tried different combinations setting pin 9 high/low and cts (Pin 12 I believe) high/low. I read in the manual cts needs to be set 2byte cycles prior to pin 9 set to ground. Can anybody explain how cts is involved and what I’m doing wrong. I’ve set sm back to 0 and the digital line passing works again.
I Set the sender to sleep unless the digital in is turned on because it’ll be running remotely on batteries. Receiver is not set in sleeping mode as it will be running off a power source and turning on a relay.