shamanblue Posted September 13, 2015 Author Share Posted September 13, 2015 negative only connected between panel and power rios. Quote Link to comment Share on other sites More sharing options...
james.wilson Posted September 13, 2015 Share Posted September 13, 2015 Neg common isn't needed for rs485. Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
Nova-Security Posted September 13, 2015 Share Posted September 13, 2015 Neg common isn't needed for rs485. Â It is on Galaxys Quote www.nova-security.co.uk www.nsiapproved.co.uk No PMs please unless i know you or you are using this board with your proper name. Link to comment Share on other sites More sharing options...
james.wilson Posted September 13, 2015 Share Posted September 13, 2015 It isn't mate. Try it I only commoned em when using split outputs Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
shamanblue Posted September 13, 2015 Author Share Posted September 13, 2015 All modules are at 100% in Diagnostics except Keypad 19 which is at 0%. I have seen the ethernet comm port 4 and the Keypad 15 both drop to 96% occasionally but the ethernet card is in the panel connected using the engineer lead that plugs on to the four pins Quote Link to comment Share on other sites More sharing options...
Nova-Security Posted September 13, 2015 Share Posted September 13, 2015 All modules are at 100% in Diagnostics except Keypad 19 which is at 0%. I have seen the ethernet comm port 4 and the Keypad 15 both drop to 96% occasionally but the ethernet card is in the panel connected using the engineer lead that plugs on to the four pins  And then you data line out is taken from the ethernet module ? It isn't mate. Try it I only commoned em when using split outputs  Must be, as it doesnt work on remote buildings unless common the negs, may be as they are not on the same supply. Quote www.nova-security.co.uk www.nsiapproved.co.uk No PMs please unless i know you or you are using this board with your proper name. Link to comment Share on other sites More sharing options...
al-yeti Posted September 13, 2015 Share Posted September 13, 2015 Honeywell documents the ground going through, so that's all coblers? Quote Link to comment Share on other sites More sharing options...
james.wilson Posted September 13, 2015 Share Posted September 13, 2015 Shouldn't make any odds 485 doesn't need a voltage reference. It's common advice due to output switching really not needed. It's not done on cameras across phases for instance. Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
al-yeti Posted September 13, 2015 Share Posted September 13, 2015 Is it an adt firmware Quote Link to comment Share on other sites More sharing options...
james.wilson Posted September 13, 2015 Share Posted September 13, 2015 Honeywell documents the ground going through, so that's all coblers?Look at the 485 protocol it will show it's needed. Plus as above you link negs on cameras. Trust me 485 does not need a common to work. Other stuff does but not the dataIs it an adt firmwareFirmware is irrelevant Don't get me wrong its good advice to prevent switching issues, but isn't needed for just data I wouldn't as a rule common negs unless switching outputs across expanders. Electrical isolation is preferable imo Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
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