The V3.09 main board uses replaceable plug-in modules, so a faulty output can be fixed by swapping one module instead of replacing the whole board.
Applies to
MASSO G3 Touch only
WARNING
All boards are static sensitive. Handle them using standard ESD practice – see
ESD Protection.
1. Plug-in module types
| Module | Image | Details |
|---|
| TTL drive output |  | 6 TTL outputs per board. Sources 5 V at 5 mA; sinks 5 mA. Do not exceed 5 V input voltage. |
| Analogue output |  | 0–10 V spindle control signal. |
| Differential driver output |  | Dual-axis driver board for the machine axes. |
| RS485 driver | – | Provision only, for future development. Not currently available. |
2. Slot layout
| Slots (left to right) | Module |
|---|
| 1–4 | TTL output modules |
| 5 | 0–10 V spindle control (analogue) |
| 6–8 | Axis outputs for X, Y, Z, A and B (differential driver). The centre axis board uses only one output; the second is unused. |
TIP
If the Y or B axis output is damaged, swap that board with the Z axis board to restore operation.
3. Installation and handling
| Power must be OFF before inserting or removing any module. |
| Each slot is labelled with the module type it accepts, and each module has its type printed on it. Install the correct type in the correct slot. |
| Install each module the correct way around. |
| Modules of the same type can be swapped with each other for troubleshooting. |
