jackaddressable 0 Report post Posted October 7 Hi guys, Simple question, what are these and what do they do? Many thanks, Jack Share this post Link to post Share on other sites
jackaddressable 0 Report post Posted October 7 3 hours ago, MrHappy said: spi key ? Don't think so. In my panel, there are 3 sockets labelled S1, S2, and S3 on the right hand side of the main board. The S1 is connected to a RIO via a 4 pin Molex style lead. Does that help? Thanks Share this post Link to post Share on other sites
GalaxyGuy 28 Report post Posted October 7 2 hours ago, jackaddressable said: Don't think so. In my panel, there are 3 sockets labelled S1, S2, and S3 on the right hand side of the main board. The S1 is connected to a RIO via a 4 pin Molex style lead. Does that help? Thanks The 4 pin headers just connect to the RS485 bus and power. 12v, 0v, A, B. Same as the screw terminals. Share this post Link to post Share on other sites
jackaddressable 0 Report post Posted October 8 7 hours ago, GalaxyGuy said: The 4 pin headers just connect to the RS485 bus and power. 12v, 0v, A, B. Same as the screw terminals. Ah okay. Does each socket correspond to a line on the panel? Share this post Link to post Share on other sites
james.wilson 415 Report post Posted October 8 if its a newer one then one is the on board 232 module Share this post Link to post Share on other sites
jackaddressable 0 Report post Posted October 8 9 hours ago, james.wilson said: if its a newer one then one is the on board 232 module It's definitely not a newer one lol Classic 504, still in pretty decent condition although watching the memory battery closely for signs of corrosion. Runs good still. Share this post Link to post Share on other sites
