2002
We have had great success with the Super LongBoard utilizing ModBus connection. This would utilize the 2 Pin ModBus port, but we're willing to exchange the 6-Pin with Digital converter for the necessary cable. These are not for the LongBoard, and those can be found here: Sienci Labs Longboard
Understand that you may need to reset your firmware settings to make the modbus communications work properly. The SLB is very finicky and resists Modbus communications. We've had 100% success getting the Modbus to work, but occasionally it takes importing our AltMill firmware settings and overwriting the controllers for it to function properly. Every single time we've been able to get it to work, but the SLB does resist our efforts sometimes, however every time we're able to get it to work properly. Please be persistent in trying to get it to work. It will work, promise.
After having your 2-Pin cable connected to ModBus port on the left side of your VFD, a few changes on your VFD need to be made
By pressing Mode you should see P0.0.00 show up. Using the double arrow to go between the parameter sets, and up and down arrow to change them, and "Enter" to go into the parameter, then adjust with the up and down arrow and Enter again to accept it. It will default to the next parameter automatically.
P0.0.03 = 2
P0.0.04 = 9
P0.0.11 = 6
P2.0.02 = 21
P4.1.00 = 4
P4.1.01 = 3
After making those changes to your VFD, you'll need to update/verify settings in G-Sender:
$16 = all off
$30 = 24000
$31=6000 Minimum RPMs
$340 = 0
$374 = 19200
$375 = 50
$392 = 6
$395=MODVFD
$462=40960
$463=40961
$464=36864
$465=1
$466=2
$467=6
$468=25
$476 = 1
- If $476 is not available, a neighboring grbl command of $478 spindle address
There are two variations of SLB, the SLB and the SLB-EXT
You'll know which one you have by the presence or absence of the relay highlighted below. The SLB-EXT has the relay.
If you have the SLB, $340 = 0
If you have the SLB-EXT, $340 = 5
We may ask you for a diagnostic report. Here are instructions on how to get that, as well as download / upload firmware settings.
Exporting Settings of SuperLong Board
We've attached our firmware settings to this kb article exported from our own AltMill with SLB-ext controller. Often it may take importing our firmware settings to fix whatever glitch there is within your SLB/SLB-ext and force the Modbus to communicate properly.
