svego Posted February 8, 2014 Share Posted February 8, 2014 Hi, I would like to use FourFaith F8914 Zigbee modules. They can work in 3 modes... 1) Transparent mode - act as serial port... 2) AT command mode - AT command mode, will use 5 channels (3 analog, 2 digital/in/out) 3) API mode - do not know how - to work with it??? Have you any example how to read/write values using AT commands and show them on screen..? How to read/write values from units using AT commands ??? example...(pg 20 on linked manual, http://en.four-faith.com/down.php?id=188 ) Idea is to use, DAQFactory PC panel as HMI and Zigbee terminals as I/O devices.. THX, Best regards...Damir Link to comment Share on other sites More sharing options...
AzeoTech Posted February 10, 2014 Share Posted February 10, 2014 You can read/write AT commands directly from the comm monitor. Just don't forget to add a \013 at the end for the carriage return. Why ZigBee? Link to comment Share on other sites More sharing options...
svego Posted February 10, 2014 Author Share Posted February 10, 2014 Hi, I need some wirelless solution with low energy consumption...Modules have 5 channels ( 3 analog, 2 DI/DO ) and I think it is best option for outdoor use... And of course, price is very important, 1 pcs cost about 60eu.. Link to comment Share on other sites More sharing options...
AzeoTech Posted February 10, 2014 Share Posted February 10, 2014 Those are good reasons. But be careful, Zigbee units are really only low power if they are asynchronous, meaning they wake up on their own timer, take some readings and forward them on, then go to sleep. If you use the units in synchronous mode (pass through would be an example, or to connect to, say, a Modbus device), then the remote devices have to be on all the time and the power benefits of Zigbee basically disappear. This would be true if you wanted to be able to tell DAQFactory to poll the devices for the inputs rather than have the devices send their data in when they want to. Link to comment Share on other sites More sharing options...
svego Posted February 11, 2014 Author Share Posted February 11, 2014 Yes, DAQFactory will poll data...I HOPE :-) Deep Sleep 2.2~2.3 mA@12 VDC TX Mode 14.0~14.4mA@12 VDC Link to comment Share on other sites More sharing options...
AzeoTech Posted February 11, 2014 Share Posted February 11, 2014 If DAQFactory is going to poll the end devices directly, then the end devices will never go into deep sleep. They'll always be in transmit mode. You can't wake a Zigbee end device in deep sleep mode. It has to wake itself, usually from a timer. Its possible that the end devices actually sleep and send their data to the gateway device and the gateway device is storing it there for DAQFactory to poll. It really depends what the architecture is for the devices you choose. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.