Hi everyone, this is my first post. I tried to post earlier this summer but had not activated my account.
Anyhow, we have VMC4020 with the 88HS control and it seems to have some issues that as far as I would wager have to do with the RS232 board, or something in that system. I am not super familiar with the machine as it is our only Fadal.
We are using the ITSCNC Usb box to DNC into the RS232. Here are the two issue's:
#1 - When we power on the machine, after the first CS cycle the machine axis will freeze outside of jogging manually, but only after the first CS, after the second it works flawlessly. So here is the example for the error:
-Power on machine
-Run CS command
-Manually Jog away from home
-Run HO command
-Machine fires a pneumatic solenoid of sorts but does not move, control screen will go blank, go to the home screen, then nothing.
-Manually Jog back to CS position - when you jog away from the frozen position, the axis's will engage very abruptly, but will not repeat.
-Run CS command
-Machine works perfectly with all commands from here on out.
Note: if we power up the machine with the ITS box disconnected, this does not happen, the machine will not freeze after the HO command. It will work perfect from the start.
#2 - ITS box periodically is unresponsive. When i say periodically I mean, as of this week only. The box worked properly for the past 7 months that we have had it, but randomly mid program this week it simply stopped. The machine was homed, reset and the ITS box was not longer accessible.
We went thru the wiring for the ITS box, verified +5V thru the centre barrel of the power wire and ground on the outside. We also ran the RS232 test that we found info for online as we somehow actually own the "test plug". As far as we can tell our machine passes the RS232 diagnostic test. Regardless of the machine passing the diagnostic test and being confident in the power connections the box would not communicate.
The machine sat for a few days. I put the ITS box in it tonight and it works perfectly again... I am hoping someone has some conclusive info on this as open ended problems are frustrating as there's no telling if/when this problem will arise again.
Here are pictures of the control case on the machine, along with the RS232 test.
Thanks in advance to everyone on here!!