Re: R6k and Ethernet current

Hi Steve,

I was a long time Z-World/Rabbit software engineer and the engineering manager responsible for Rabbit development for the last three years prior to Digi's last round of layoffs.  This is a known problem that, if memory serves, was scheduled to be fixed with the Dynamic C release to support the RCM6600W.  You should contact Digi technical support to see if you can get a copy of the library that fixes this problem.  

- Paul


--- In [email protected], "seecwriter" <seecwriter@...> wrote:
>
> For the RCM67XX module, we've noticed an anomaly with current draw
> when using Ethernet.
> 
> When the Ethernet port is connected to a LAN, the total current draw
> for the computer section (motherboard + RCM67XX) is a steady 350ma.
> However, if the Ethernet port is not connected, the current fluctuates
> between 350ma and 500ma. We've traced the increase in current to the
> call of pd_havelink() that occurs at about a 500ms rate. That 150ma of 
> extra current seems like a huge increase just to check for a LAN 
> connection. This pulsing current is affecting our ADC and DAC readings 
> and settings.
> 
> This occurs on all of our modules. Anyone else notice this and/or have
> any ideas on what to do about it? Adding extra bypass caps hasn't 
> helped. 
> 
> Steve
>