Introduction
All Maple Systems HMIs programmed with EBPro (EasyBuilder Pro), including every cMT X Series and cMT Series model, are compatible with Haiwell PLC. Configure your Controller and HMI/cMT with the following parameters to establish reliable communication.
Support Series: Haiwell A Series, C series, T Series, H Series, N Series, S Series PLC
Website: http://www.haiwell.com/
HMI Settings
| Parameters | Recommended | Options | Notes |
|---|---|---|---|
| PLC type | Haiwell PLC | ||
| PLC I/F | RS232 | RS232, RS485 2W | |
| Baud rate | 19200 | 19200 | |
| Data bits | 8 | 8 | |
| Parity | None | None | |
| Stop bits | 2 | 2 | |
| PLC sta. no. | 1 | 1~247 |
Device Address
| Bit/Word | Device Type | Format | Range | Memo |
|---|---|---|---|---|
| B | X | DDDD | 0 ~ 1023 | Input Switch |
| B | Y | DDDD | 0 ~ 1023 | Output Switch |
| B | M | DDDDD | 0 ~ 12287 | Internal Relay |
| B | T | DDDD | 0 ~ 1023 | Timer (Output Coil State) |
| B | C | DDD | 0 ~ 255 | Counter (Output Coil State) |
| B | SM | DDD | 0 ~ 215 | System Status Bit |
| B | S | DDDD | 0 ~ 2047 | Step Bit |
| W | CR | DD | 0 ~ 79 | Special Module Parameter Register |
| W | AI | DDD | 0 ~ 255 | Analog Input Register |
| W | AQ | DDD | 0 ~ 255 | Analog Output Register |
| W | V | DDDDD | 0 ~ 14847 | Data Register |
| W | TCV | DDDD | 0 ~ 1023 | Timer (current value register) |
| W | CCV | DDD | 0 ~ 255 | Counter (current value register) |
| W | SV | DDD | 0 ~ 154 | System Register |
Wiring Diagrams
NOTE: The serial port pin assignments may vary between HMI models.
RS-232 (RS232 4P Mini-Din)
The following is the view from the soldering point of a connector.

| HMI | Direction | PLC |
|---|---|---|
| Pin assignments | RS232 4P Mini-Din Male | |
| Rx | ↔ (bidirectional) | 2 |
| Tx | ↔ (bidirectional) | 1 |
| GND | ↔ (bidirectional) | 3 |
RS-485 2W
| HMI | Direction | PLC |
|---|---|---|
| Pin assignments | RS485 2W Terminal | |
| Data- | ↔ (bidirectional) | B- |
| Data+ | ↔ (bidirectional) | A+ |
| GND | ↔ (bidirectional) |
