Introduction
All Maple Systems HMIs programmed with EBPro (EasyBuilder Pro), including every cMT X Series and cMT Series model, are compatible with Schneider Electric Modbus RTU. Configure your Controller and HMI/cMT with the following parameters to establish reliable communication.
Supported Series: Schneider MODBUS RTU CONTROLLER (M221)
Website: www.schneider-electric.com
HMI Settings
| Parameters | Recommended | Options | Notes |
|---|---|---|---|
| PLC type | Schneider MODBUS RTU | ||
| PLC I/F | RS485 | RS232/RS485 | |
| Baud rate | 9600 | 9600~115200 | |
| Data bits | 8 | 7,8 | |
| Parity | Even | Even, Odd, None | |
| Stop bits | 1 | 1,2 | |
| PLC sta. no. | 1 | 0-255 | |
| Online simulator | YES | ||
| Broadcast command | YES | ||
| Extend address mode | YES |
PLC Settings
| Parameter | Value |
|---|---|
| Communication mode | Modbus RTU protocol |
Device Address
| Bit/Word | Device Type | Format | Range | Memo |
|---|---|---|---|---|
| B | %IX | DDDDDo | 0 ~ 655357 | Input bit (read only) |
| B | %QX | DDDDDo | 0 ~ 655357 | Write multiple coils |
| B | %MX | DDDDDDo | 0 ~ 9999997 | Output register bit (octal) |
| B | %M | DDDDD | 0 ~ 65535 | Output bit |
| B | %MW_Bit | DDDDDdd | 0 ~ 6553515 | Output register bit (decimal) |
| B | 1x | DDDDD | 0 ~ 65535 | Input bit (read only) |
| B | 0x_multi_coils | DDDDD | 0 ~ 65535 | Write multiple coils |
| B | 3x_Bit | DDDDDdd | 0 ~ 6553515 | Input register bit (read only) |
| B | %I | DDDddd | 0 ~ 255255 | |
| B | %Q | DDDddd | 0 ~ 255255 | |
| B | %S | DDDDD | 0 ~ 65535 | |
| B | %X | DDD | 0 ~ 200 | |
| W | %MW | DDDDDD | 0 ~ 999999 | Output register |
| DW | %MD | DDDDDD | 0 ~ 999999 | Output register |
| W | 3x | DDDDD | 0 ~ 65535 | Input Register (read only) |
| DW | 5x | DDDDD | 0 ~ 65535 | 4x double word swap |
| DW | 6x | DDDDD | 0 ~ 65535 | 4x single word write |
| DW | 4x_Double | DDDDD | 0 ~ 65535 | |
| DW | %IW | DDD.DDD | 0 ~ 255.255 | |
| DW | %QW | DDD.DDD | 0 ~ 255.255 | |
| DW | %SW | DDDDD | 0 ~ 65535 | |
| DW | %KW | DDDD | 0 ~ 65535 | |
| DW | %IWS | DDD.DDD | 0 ~ 255.255 | |
| DW | %QWS | DDD.DDD | 0 ~ 255.255 | |
| DW | %TM_V | DDD | 0 ~ 254 | |
| DW | %TM_P | DDD | 0 ~ 254 | |
| DW | %TM_Q | DDD | 0 ~ 254 |
Wiring Diagrams
NOTE: The serial port pin assignments may vary between HMI models.
RS-485 2W (RJ45 Connector)
The following is the view from the soldering point of a connector.
| HMI | Direction | PLC |
|---|---|---|
| Pin assignments | RS485 2W 8P RJ45 | |
| Data- | ↔ (bidirectional) | 5 |
| Data+ | ↔ (bidirectional) | 4 |
| GND | ↔ (bidirectional) | 8 |