The GOT1030 can act as the programming access point for an FX3G PLC. Connect the programming computer to the GOT1030 RS-232 mini-DIN interface with an SC-Q cable, then use the GOT transparent-mode path to reach the PLC. The reverse path—programming the GOT1030 through the FX3G connection—is not supported by the supplied evidence.
Supported Programming Paths
| Programming task | Connection path | Evidence status |
|---|---|---|
| Program the FX3G | Computer → GOT1030 RS-232 port → GOT transparent mode → FX3G | Supported |
| Program the GOT1030 | Computer → GOT1030 RS-232 port | Supported |
| Program the GOT1030 through the FX3G USB connection | Computer → FX3G → GOT1030 | Not supported |
Cable and Interface Arrangement
Use the SC-Q cable, identified in the evidence as an RS-232 female-to-mini-DIN cable, between the programming computer and the GOT1030. A computer without a native RS-232 interface also requires a USB-to-serial adapter. The GOT-to-PLC side uses the existing RS-422 connection described for the application.
The evidence does not provide connector pinouts, serial settings, software menu names, or compatibility revisions. Confirm those details against the manuals for the exact GOT1030 and FX3G variants before purchasing or fabricating cables.
Configure and Verify Transparent Programming
- Connect the GOT1030 to the FX3G through the intended RS-422 link.
- Connect the programming computer to the GOT1030 RS-232 mini-DIN port using the SC-Q cable and, if required, a USB-to-serial adapter.
- Use the GOT transparent-mode function when accessing the FX3G through the HMI.
- Verify both operations separately: transfer an HMI project directly to the GOT1030, then establish programming communication with the FX3G through the GOT.
If direct GOT communication works but FX3G access does not, isolate the fault to the transparent-mode configuration or the GOT-to-PLC RS-422 path. Do not attempt to solve it by routing GOT programming through the PLC; that direction is not available according to the evidence.
Selection Decision
The transparent-mode arrangement provides one external programming connection at the machine while retaining the smaller GOT1030 form factor. Moving to a larger HMI solely to obtain USB is unnecessary if serial programming through the GOT meets the service workflow. Validate the SC-Q cable, USB-to-serial adapter, and exact hardware compatibility with the Mitsubishi distributor before standardizing the design.
FAQ
Can I program an FX3G PLC through a GOT1030?
Yes. Connect the computer to the GOT1030 RS-232 port and use the GOT transparent-mode path to access the FX3G.
Can I program a GOT1030 through the FX3G USB connection?
No supported PLC-to-HMI programming path is identified. Program the GOT1030 directly through its RS-232 mini-DIN interface.
Which cable connects a computer to the GOT1030 serial port?
The evidence identifies the SC-Q RS-232 female-to-mini-DIN cable. Add a USB-to-serial adapter when the programming computer has no native RS-232 port.