RS232 Relay: Difference between revisions
From Leo's Notes
This page was last edited on 2 June 2017, at 23:49.
No edit summary |
No edit summary |
||
| Line 8: | Line 8: | ||
# stty -F /dev/ttyS0 9600 | # stty -F /dev/ttyS0 9600 | ||
# while true ; do echo -e "\xFE\x01" > /dev/ttyS0 ; sleep 1 ; echo -e "\xFE\x00" > /dev/ttyS0 ; sleep 1 ; done | # while true ; do echo -e "\xFE\x01" > /dev/ttyS0 ; sleep 1 ; echo -e "\xFE\x00" > /dev/ttyS0 ; sleep 1 ; done | ||
## You can also use printf | |||
# printf \\$(printf '%03o' 254) > /dev/ttyS0 | |||
# printf \\$(printf '%03o' 0) > /dev/ttyS0 | |||
}} | }} | ||
Revision as of 23:49, 2 June 2017
There is this RS232 Relay with 'www.iorelay.com' printed on the PCB.
I believe the manual for it is this: https://s3.amazonaws.com/assets.controlanything.com/manuals/R2X.PDF
On Linux, turning it off and on:
# stty -F /dev/ttyS0 9600
# while true ; do echo -e "\xFE\x01" > /dev/ttyS0 ; sleep 1 ; echo -e "\xFE\x00" > /dev/ttyS0 ; sleep 1 ; done
## You can also use printf
# printf \\$(printf '%03o' 254) > /dev/ttyS0
# printf \\$(printf '%03o' 0) > /dev/ttyS0