E-Mon communications

[rabidpeter]

We have a combination of 23 class 3400 and 3000 meters on a single Rs485 network that has grown to over 4000 feet of serial and star connections. The network is driven by a single output from your older serial key. We have had no communication problems using this key. However, that model key is no longer available. We had another building that was fed by telephone modem to an obsolete telephone modem key that failed. We replaced it with an ethernet key that failed to communicate to a similar mishmash described above. In that case we installed an rs485 splitter and rewired the system to 3 runs eliminating star connections and separating 3400 meters from the older 3000 meters. It works but I notice that transmissions are often repeated due to errors. What is your installation recommendation to avoid a similar situation in our existing building currently using the serial key?

[brianmetergeek]

Rabidpeter, with RS485, you should avoid any star connections, these WILL cause issues. you should use a separate RS485 converter for each network something like the B&B Usoptl4 works well