Hi everybody, I've got an Unitek iZi UPS 525 with a serial interface. The supplied cable looks fairly simple: RX->RX , TX->TX and GND->GND. Using this cable and Minicom with 2400 8N1 I'm able to issue commands to the UPS using the "Megatec Protocol" http://www.networkupstools.org/protocols/megatec.html so I know the UPS is fairly "intelligent" :-) and the serial connection works. Questions: 1. Which cable should I use for "Megatec Protocol"? Yes, I've read the aforementioned document but the hardware spec they give there doesn't look OK to me: e.g. "RX <---------- TX (pin 9)"... Pin 9 is supposed to be RI, or not? :-| 2. Which driver should I use for "Megatec Protocol"? The only Megatec references (in "UPS features and support" http://www.networkupstools.org/compat/stable.html) are for "genericups upstype=21". Trouble is, "genericups" looks more like an enclosure type of driver rather than a smart one. It starts OK but OL and LB are always ON, no wonder since the cable has only three wires. :-| Any hints? PS. As per "UPS features and support" I've also tried "fentonups", just to be on the safe side although to me "fenton" looks more like a simple ON/OFF signaling rather than a complex serial protocol. PPS. Yes, the UPS has "Linux" written on the box and they do provide some kind of daemon, it's just that it requires JRE and X! =:-o
> I've got an Unitek iZi UPS 525 with a serial interface. The suppliedcable looks fairly simple: RX->RX , TX->TX and GND->GND. Using this cable and Minicom with 2400 8N1 I'm able to issue commands to the UPS using the "Megatec Protocol" http://www.networkupstools.org/protocols/megatec.html so I know the UPS is fairly "intelligent" :-) and the serial connection works. Good.> Questions: > > 1. Which cable should I use for "Megatec Protocol"? Yes, I've read theaforementioned document but the hardware spec they give there doesn't look OK to me: e.g. "RX <---------- TX (pin 9)"... Pin 9 is supposed to be RI, or not? :-| The cable you used for testing. Sometimes manufacturers make special cables, so that you'll have to buy them from them (for a premium). In other cases, a straight through connection like you used, is fine. Note that the document you're referring to lists a specific UPS model, it doesn't state that all devices using this protocol use this pin layout.> 2. Which driver should I use for "Megatec Protocol"? The only Megatecreferences (in "UPS features and support"> http://www.networkupstools.org/compat/stable.html) are for "genericupsupstype=21". Trouble is, "genericups" looks more like an enclosure type of driver rather than a smart one. It starts OK but OL and LB are always ON, no wonder since the cable has only three wires. :-|> > Any hints?The compatibility list you're referring to is outdated. There have been quite some changes recently (also in the new megatec driver) and nut-2.0.5 will be released in just a couple days from now. If you can't wait for that, grab it from the SVN trunk.> PS. As per "UPS features and support" I've also tried "fentonups", justto be on the safe side although to me "fenton" looks more like a simple ON/OFF signaling rather than a complex serial protocol. The new megatec driver replaces many older drivers (including fentonups, if memory serves) with much more functionality.> PPS. Yes, the UPS has "Linux" written on the box and they do providesome kind of daemon, it's just that it requires JRE and X! =:-o The 'Linux' support for many of those system, usually comprises of a closed source driver for ancient Linux distro's. Don't count on it if it's written on the box, unless you're bying MGE which provides excellent Linux support. Regards, Arjen -- Eindhoven - The Netherlands Key fingerprint - 66 4E 03 2C 9D B5 CB 9B 7A FE 7E C1 EE 88 BC 57 -- Eindhoven - The Netherlands Key fingerprint - 66 4E 03 2C 9D B5 CB 9B 7A FE 7E C1 EE 88 BC 57 --
> I've got an Unitek iZi UPS 525 with a serial interface. The supplied cable > looks fairly simple: RX->RX , TX->TX and GND->GND. Using this cable and > Minicom with 2400 8N1 I'm able to issue commands to the UPS using the > "Megatec Protocol" http://www.networkupstools.org/protocols/megatec.html > so I know the UPS is fairly "intelligent" :-) and the serial connection > works.Good.> Questions: > > 1. Which cable should I use for "Megatec Protocol"? Yes, I've read the > aforementioned document but the hardware spec they give there doesn't look > OK to me: e.g. "RX <---------- TX (pin 9)"... Pin 9 is supposed to be > RI, or not? :-|The cable you used for testing. Sometimes manufacturers make special cables, so that you'll have to buy them from them (for a premium). In other cases, a straight through connection like you used, is fine. Note that the document you're referring to lists a specific UPS model, it doesn't state that all devices using this protocol use this pin layout.> 2. Which driver should I use for "Megatec Protocol"? The only Megatec > references (in "UPS features and support" > http://www.networkupstools.org/compat/stable.html) are for "genericups > upstype=21". Trouble is, "genericups" looks more like an enclosure type of > driver rather than a smart one. It starts OK but OL and LB are always ON, > no wonder since the cable has only three wires. :-| > > Any hints?The compatibility list you're referring to is outdated. There have been quite some changes recently (also in the new megatec driver) and nut-2.0.5 will be released in just a couple days from now. If you can't wait for that, grab it from the SVN trunk.> PS. As per "UPS features and support" I've also tried "fentonups", just to > be on the safe side although to me "fenton" looks more like a simple > ON/OFF signaling rather than a complex serial protocol.The new megatec driver replaces many older drivers (including fentonups, if memory serves) with much more functionality.> PPS. Yes, the UPS has "Linux" written on the box and they do provide some > kind of daemon, it's just that it requires JRE and X! =:-oThe 'Linux' support for many of those system, usually comprises of a closed source driver for ancient Linux distro's. Don't count on it if it's written on the box, unless you're bying MGE which provides excellent Linux support. Regards, Arjen -- Eindhoven - The Netherlands Key fingerprint - 66 4E 03 2C 9D B5 CB 9B 7A FE 7E C1 EE 88 BC 57
> I've got an Unitek iZi UPS 525 with a serial interface. The suppliedcable looks fairly simple: RX->RX , TX->TX and GND->GND. Using this cable and Minicom with 2400 8N1 I'm able to issue commands to the UPS using the "Megatec Protocol" http://www.networkupstools.org/protocols/megatec.html so I know the UPS is fairly "intelligent" :-) and the serial connection works. Good.> Questions: > > 1. Which cable should I use for "Megatec Protocol"? Yes, I've read theaforementioned document but the hardware spec they give there doesn't look OK to me: e.g. "RX <---------- TX (pin 9)"... Pin 9 is supposed to be RI, or not? :-| The cable you used for testing. Sometimes manufacturers make special cables, so that you'll have to buy them from them (for a premium). In other cases, a straight through connection like you used, is fine. Note that the document you're referring to lists a specific UPS model, it doesn't state that all devices using this protocol use this pin layout.> 2. Which driver should I use for "Megatec Protocol"? The only Megatecreferences (in "UPS features and support"> http://www.networkupstools.org/compat/stable.html) are for "genericupsupstype=21". Trouble is, "genericups" looks more like an enclosure type of driver rather than a smart one. It starts OK but OL and LB are always ON, no wonder since the cable has only three wires. :-|> > Any hints?The compatibility list you're referring to is outdated. There have been quite some changes recently (also in the new megatec driver) and nut-2.0.5 will be released in just a couple days from now. If you can't wait for that, grab it from the SVN trunk.> PS. As per "UPS features and support" I've also tried "fentonups", justto be on the safe side although to me "fenton" looks more like a simple ON/OFF signaling rather than a complex serial protocol. The new megatec driver replaces many older drivers (including fentonups, if memory serves) with much more functionality.> PPS. Yes, the UPS has "Linux" written on the box and they do providesome kind of daemon, it's just that it requires JRE and X! =:-o The 'Linux' support for many of those system, usually comprises of a closed source driver for ancient Linux distro's. Don't count on it if it's written on the box, unless you're bying MGE which provides excellent Linux support. Regards, Arjen -- Eindhoven - The Netherlands Key fingerprint - 66 4E 03 2C 9D B5 CB 9B 7A FE 7E C1 EE 88 BC 57 -- Eindhoven - The Netherlands Key fingerprint - 66 4E 03 2C 9D B5 CB 9B 7A FE 7E C1 EE 88 BC 57