CSMA/CD (Carrier Sense Multiple Access with Collision Detection) is the usual acronym __________________________________________ David C Brown 43 Bings Road Whaley Bridge High Peak Phone: 01663 733236 Derbyshire eMail: dcb.home@gmail.com SK23 7ND web: www.bings-knowle.co.uk/dcb *Sent from my etch-a-sketch* On 23 October 2017 at 13:32, wrote: > > Don't you mean CDMA? > > Regards, > > Jim > > > -------- Original Message -------- > > Subject: RE: [EE} Collision detection > > From: "Harold Hallikainen" > > Date: Sun, October 22, 2017 7:30 pm > > To: "Microcontroller discussion list - Public." > > > > > > I think RS485 chips will survive contention without damage. I've done > > master/slave systems with multiple slaves. That avoids contention since > > the slaves only respond to requests from the master. Another approach i= s > > "mini-slotted" With a mini-slotted network, each device is allocated a > > mini-slot time where it is allowed to start transmission. Once a device > > comes on line during its minislot, it may continue transmitting > > indefinitely. When it's done, the "site counter" continues to advance > each > > mini-slot time. I've also called this an "absence of data token passing= .." > > A lack of data "passes the token" to the next site in system. Finally, > > there's CSMA with collision detection and random backoff. > > > > Harold > > > > > > -- > > FCC Rules Updated Daily at http://www.hallikainen.com > > Not sent from an iPhone. > > -- > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > View/change your membership options at > > http://mailman.mit.edu/mailman/listinfo/piclist > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .