Retrofitting a 3-axis VMC with DC servos - guidance needed

There is another Mesa shop in the US
www.mesaus.com

Yes, but looking at those always there's something that's not available.
Since I'm out of the United States, I wanna buy all from the same provider.

I'm thinking if it's a good idea to use the next configuration:
1x 6i24-16
2x 7i36
1x 7i44
1x 7i73

One of the 7i36s is if I want to install a fourth axis, but I'm using all the connections on the 6i24.

The next configuration I'm looking at is:
1x 6i24-16
1x 7i48
1x 7i44
1x 7i73

In this one, connectors are unused, and I can control 4 axes, a spindle, and the rest of the machine in both configurations.

Can someone explain to me if one is better than the other (don't taking into account that one has one more connector available)?

I haven't found anyone that used the 6i24 with the 7i48. The 2x7i65 is in the manual of the 6i24. It shows as a supplied configuration.

There is some limitation in the ports or the cards that i can use?
cause looking at it do not say anything like that.
And what are the chance that the second option (7i48) came available soon in mesanet

Thank you so much guys again.
You are helping me a lot.
Cheers

What about a 7I97T +7I73?
 

I'm not sure, to be honest. I wasn't specifically looking for the ethernet version of the boards, as they don't seem to be the most popular option here (or at least that's my impression).

From what I've read, the ethernet version usually has a 1 kHz refresh rate. My goal was to find the most reliable configuration possible, so if I messed something up, I'd have a solid backup.

However, now that I'm looking at it, I think it's a good option. It could be used with different PCs in the future without becoming a bottleneck. Do you know of any topics or threads where this configuration is discussed?

for what i read i can connect the 7i73 to the port in the board (using the cable correctly)

And i can add more inputs and ouputs through the db25 connector.

And can i use other ports of ethernet to add more boards or this is a banned move

Also, could someone explain if there's any problem comparing the PCIe to the ethernet versions? After reading and writing this, I don't think 1 kHz is a bad rate for these, and the machine's operation is controlled by the board itself, while the PC only refreshes and corrects some things, right?

Again, thank you guy for your help.

Cheers.

Yes, a 7I73 (or other sserial device) can connect directly to the 7I97T

1 KHz is the default LinuxCNC servo thread rate and is typically fine for
normal CNC machines with velocity mode servos.

You can add multiple Ethernet cards with a switch or multiple Ethernet ports

Japoo_Ness wrote:

I'm not sure, to be honest. I wasn't specifically looking for the ethernet version of the boards, as they don't seem to be the most popular option here (or at least that's my impression).

From what I've read, the ethernet version usually has a 1 kHz refresh rate. My goal was to find the most reliable configuration possible, so if I messed something up, I'd have a solid backup.

No idea how you got to that conclusion as probably 90% of new posts are for Ethernet cards, and i have at least 30 in daily use with no issues ever.
And most ethernet Mesa cards can easily do 4Khz, so there is no difference between the interface types, at least not major differences in use. Also have over 30 of PCI and PCI-E cards in daily use, with no issues ever.