B&B Electronics MESR9xx Manual De Usuario

A few simple suggestions that may assist you if your system is experiencing problems 
include: 

•  Slowing down the polling rate may be helpful if power cycling doesn’t cure the 

problem. 

•  A common misperception is that every serial network must terminate with a resistor.  

While this was true of early serial network configurations, it’s typically the wrong 
answer – call our technical support and verify if you’re an exception, at 815.433.5100 
option 3. 

A sometimes difficult problem is difference in grounding voltage between various network 
locations. Stray voltage from lightning or other sources may also find its way onto the network.  
These conditions make isolation necessary in many settings.