Introduction
All Maple Systems HMIs programmed with EBPro (EasyBuilder Pro), including every cMT X Series and cMT Series model, are compatible with Hengtong HT_EMS. Configure your Controller and HMI/cMT with the following parameters to establish reliable communication.
Supported Series: HT_EMS
HMI Settings
| Parameters | Recommended | Options | Notes |
|---|---|---|---|
| PLC type | HT_EMS | ||
| PLC I/F | RS232 | ||
| Baud rate | 115200 | ||
| Data bits | 8 | ||
| Parity | None | ||
| Stop bits | 1 | ||
| PLC sta. no. | 0 | ||
| Online simulator | YES | ||
| Extend address mode | YES |
Device Address
| Bit/Word | Device type | Format | Range | Memo |
|---|---|---|---|---|
| B | EMS Bit | DDDDDdd | 0 ~ 3276715 | EMS bit |
| W | EMS | DDDD | 0 ~ 1023 | |
| W | PCS | DDDD | 0 ~ 1023 | |
| W | STS | DDDD | 0 ~ 1023 | |
| W | Central control Positive | DDDD | 0 ~ 1023 | *Note1, *Note4 |
| W | Central control Negative | DDDD | 0 ~ 1023 | *Note1, *Note4 |
| W | Battery stack | DDDD | 0 ~ 1023 | |
| W | Battery cluster | DDDD | 0 ~ 1023 | |
| W | PV INV | DDDD | 0 ~ 1023 | |
| W | PV junction box | DDDD | 0 ~ 1023 | |
| W | DC charging pile | DDDD | 0 ~ 1023 | |
| W | AC charging pile | DDDD | 0 ~ 1023 | |
| W | Grid gateway meter | DDDD | 0 ~ 1023 | |
| W | ESS gateway meter | DDDD | 0 ~ 1023 | |
| W | PV INV gateway meter | DDDD | 0 ~ 1023 | |
| W | Charging pile gateway | DDDD | 0 ~ 1023 | |
| W | Wind energy gateway | DDDD | 0 ~ 1023 | |
| W | Load gateway meter | DDDD | 0 ~ 1023 | |
| W | ACDC | DDDD | 0 ~ 1023 | |
| W | DCDC | DDDD | 0 ~ 1023 | |
| W | Air-condition | DDDD | 0 ~ 1023 | |
| W | Fire fighting | DDDD | 0 ~ 1023 | |
| W | UPS | DDDD | 0 ~ 1023 | |
| W | Diesel engine | DDDD | 0 ~ 1023 | |
| W | EQP_LIST | DDDD | 0 ~ 1023 | *Note2 |
| W | SYS_INFO | DDDD | 0 ~ 1023 | *Note2 |
| W | SYS_TIME | D | 0 ~ 5 | *Note1, *Note3 |
| W | ESS inside meter | DDDD | 0 ~ 1023 | |
| W | Dynamic Station Number | D | 0 ~ 2 | *Note5 |
| W | High voltage side meter | DDDD | 0 ~ 1023 |
Note1: Only Central control Positive, Central control Negative, SYS_TIME can be written.
Note2: EQP_LIST, SYS_INFO only support ASCII object.
Note3: SYS_TIME year (SYS_TIME-1) is necessary to be more than 2000. When its values are written, PLC will update every 500 ms, so it may display the previous value once or twice.
Note4: Central control Positive, Central control Negative write in same address. The only difference between two address types is the write type.
Note5: Address 0: enable=1, disable=0. Address 1: PV INV station. Address 2: Battery cluster station. After the dynamic station number function is enabled at address 0, you can use address 1 and address 2 to specify the PV INV and Battery cluster communication station numbers.
Note6: To query the third device, you need to set the object address to 2#. For example, DC Charge pile with the signal ID 1 of the third device, set it to 2#1.
Wiring Diagram
NOTE: The serial port pin assignments may vary between HMI models.
RS-232
| HMI | Direction | PLC |
|---|---|---|
| Pin assignments | RS232 9P D-sub | |
| Rx | ↔ (bidirectional) | 2 TXD |
| Tx | ↔ (bidirectional) | 3 RXD |
| GND | ↔ (bidirectional) | 5 GND |