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pingvin [2011/12/05 00:33] jap |
pingvin [2013/01/13 10:59] jap |
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| With modbus (RS-485) interface adapter and library support, it is possible to communicate with the ventilation unit. See my [[modbus|Linux modbus support]] page. | With modbus (RS-485) interface adapter and library support, it is possible to communicate with the ventilation unit. See my [[modbus|Linux modbus support]] page. | ||
| - | **Warning:** Do not try the given example master software with your ventilation unit. It looks like checksum inspection is not implemented properly in the firmware, thus running multiple masters in the same bus (with is not defined by modbus spec.) may cause collisions and subsequently ruin register settings of your device. Done that already! | + | **Beware:** The ventilation unit is acting as a master in the modbus network. Thus,all additional devices should be acting as a slave, in order to avoid collision. |
| EDA control unit has dual 4p4c connectors for chaining up to four control panels into single ventilation unit. That makes is very easy to attach computer into the loop, without need for hardware modifications or special branching cable. | EDA control unit has dual 4p4c connectors for chaining up to four control panels into single ventilation unit. That makes is very easy to attach computer into the loop, without need for hardware modifications or special branching cable. | ||