Introduction
All Maple Systems HMIs programmed with EBPro (EasyBuilder Pro), including every cMT X Series and cMT Series model, are compatible with a Koyo (Automation Direct) NK1 PLC. Configure your Controller and HMI/cMT with the following parameters to establish reliable communication.
Supported Series: KOYO NK1 Series
Website: automationdirect.com
HMI Settings
| Parameters | Recommended | Options | Notes |
|---|---|---|---|
| PLC type | KOYO NK1 | ||
| PLC I/F | RS232 | ||
| Baud rate | 115200 | ||
| Data bits | 8 | ||
| Parity | None | ||
| Stop bits | 1 | ||
| PLC sta. no. | 1 |
Device Addresses
| Bit/Word | Device Type | Format | Range | Memo |
|---|---|---|---|---|
| B | I | OOOO | 0 ~ 1777 | |
| B | Q | OOOO | 0 ~ 1777 | |
| B | M | OOOO | 0 ~ 3777 | |
| B | C | OOO | 0 ~ 777 | |
| B | T | OOO | 0 ~ 777 | |
| B | S | OOOO | 0 ~ 1777 | |
| B | SP | OOOO | 0 ~ 1777 | |
| B | GI | OOOO | 0 ~ 3777 | |
| B | GQ | OOOO | 0 ~ 3777 | |
| W | R | OOOOO | 0 ~ 41277 | |
| W | Timer | OOO | 0 ~ 777 | |
| W | Counter | OOO | 0 ~ 777 |
Wiring Diagram
NOTE: The serial port pin assignments may vary between HMI models.
RS-232
| HMI | Direction | PLC |
|---|---|---|
| Pin assignments | PLC RS232 6P RJ12 | |
| Rx | ↔ (bidirectional) | 4 |
| Tx | ↔ (bidirectional) | 3 |
| GND | ↔ (bidirectional) | 1 |
| RTS | ↔ (bidirectional, optional) | 6 |
| CTS | ↔ (bidirectional, optional) | 5 |