Modbus API reference
info
All data is transferred in network byte order/big endian.
| Device/Protocol | Reg. Type | Address | Name | R/W | Nr. Regs. | Description |
|---|---|---|---|---|---|---|
| Phoenix | Input | 100 | EV Status | R | 1 | Returns the Control Pilot state |
| Phoenix | Input | 101 | Proximity Current | R | 1 | Returns signaled current in Amps |
| Phoenix | Input | 102 | Charging Time (seconds) | R | 2 | Duration since beginning of charge |
| Phoenix | Input | 104 | Legacy | R | 1 | Do not use. |
| Phoenix | Input | 105 | Firmware Version | R | 2 | Returns the Ebee Application version number (example: 0.91 = {0x30, 0x2E, 0x39, 0x31) 4.40 = {0x34, 0x2E, 0x34, 0x34}). |
| Phoenix | Input | 107 | Legacy | R | 1 | Do not use. |
| Phoenix | Input | 108 | Voltage L1 | R | 2 | Returns the voltage of phase 1 of the ocpp meter in V. |
| Phoenix | Input | 110 | Voltage L2 | R | 2 | Returns the voltage of phase 2 of the ocpp meter in V. |
| Phoenix | Input | 112 | Voltage L3 | R | 2 | Returns the voltage of phase 3 of the ocpp meter in V. |
| Phoenix | Input | 114 | Current L1 | R | 2 | Returns the current of phase 1 of the ocpp meter in mA. |
| Phoenix | Input | 116 | Current L2 | R | 2 | Returns the current of phase 2 of the ocpp meter in mA. |
| Phoenix | Input | 118 | Current L3 | R | 2 | Returns the current of phase 3 of the ocpp meter in mA. |
| Phoenix | Input | 120 | Total Power (OCPP Meter Power) | R | 2 | Returns the power read from the ocpp meter in W. |
| Phoenix | Input | 122 | Reactive Power | R | 2 | |
| Phoenix | Input | 124 | Real Power | R | 2 | |
| Phoenix | Input | 126 | Power Factor | R | 2 | |
| Phoenix | Input | 128 | Energy | R | 2 | Energy read from meter in Wh |
| Phoenix | Input | 130 | Max. power ever seen from OCPP Meter | R | 2 | Max. power value ever seen since boot |
| Phoenix | Input | 132 | Charged Energy (Wh) | R | 2 | Sum of charged energy for the current session |
| Phoenix | Input | 134 | Grid Frequency | R | 2 | Returns the frequency read from the ocpp meter in Hz. |
| Phoenix | Input | 136 | Assumed Maximum Charging Current L1 | R | 2 | |
| Phoenix | Input | 138 | Assumed Maximum Charging Current L2 | R | 2 | |
| Phoenix | Input | 140 | Assumed Maximum Charging Current L3 | R | 2 | |
| Phoenix | Input | 200 | Input values | R | 1 | |
| Phoenix | Input | 201 | - | R | 1 | - |
| Phoenix | Input | 202 | Plug lock detect | R | 1 | Status of plug lock detection |
| Phoenix | Input | 203 | - | R | 1 | - |
| Phoenix | Input | 204 | - | R | 1 | - |
| Phoenix | Input | 205 | - | R | 1 | - |
| Phoenix | Input | 206 | - | R | 1 | - |
| Phoenix | Input | 207 | - | R | 1 | - |
| Phoenix | Input | 208 | - | R | 1 | - |
| Phoenix | Holding | 310 | IP Address - 1st Octet | R | 1 | Get the IP address of the active interface connected to the backend. |
| Phoenix | Holding | 311 | IP Address - 2nd Octet | R | 1 | Get the IP address of the active interface connected to the backend. |
| Phoenix | Holding | 312 | IP Address - 3rd Octet | R | 1 | Get the IP address of the active interface connected to the backend. |
| Phoenix | Holding | 313 | IP Address - 4th Octet | R | 1 | Get the IP address of the active interface connected to the backend. |
| TQ-DM100 | Holding | 1000 | Charge Point State | R | 1 | |
| TQ-DM100 | Holding | 1001 | Charge State | R | 1 | |
| TQ-DM100 | Holding | 1002 | EVSE State | R | 1 | |
| TQ-DM100 | Holding | 1004 | Cable State | R | 1 | |
| TQ-DM100 | Holding | 1006 | EVSE Error Code | R | 1 | |
| TQ-DM100 | Holding | 1008 | Current L1 | R | 1 | Returns the current of phase 1 of the ocpp meter in mA. |
| TQ-DM100 | Holding | 1010 | Current L2 | R | 1 | Returns the current of phase 2 of the ocpp meter in mA. |
| TQ-DM100 | Holding | 1012 | Current L3 | R | 1 | Returns the current of phase 3 of the ocpp meter in mA. |
| TQ-DM100 | Holding | 1020 | Active Power | R | 2 | |
| TQ-DM100 | Holding | 1024 | Active Power L1 | R | 2 | |
| TQ-DM100 | Holding | 1028 | Active Power L2 | R | 2 | |
| TQ-DM100 | Holding | 1032 | Active Power L3 | R | 2 | |
| TQ-DM100 | Holding | 1036 | Energy | R | 2 | |
| TQ-DM100 | Holding | 1100 | Hardware current limit | R | 1 | |
| TQ-DM100 | Holding | 1102 | Minimum current limit | R | 1 | |
| TQ-DM100 | Holding | 1104 | Max. Current from EVSE | R | 1 | |
| TQ-DM100 | Holding | 1106 | Max. Current from Cable | R | 1 | |
| TQ-DM100 | Holding | 1108 | Max. Current from EV | R | 1 | |
| TQ-DM100 | Holding | 1200 | User priority | R | 1 | |
| TQ-DM100 | Holding | 1300 | EV Battery State (% 0-100) | R | 1 | Returns an estimate of the SoC |
| TQ-DM100 | Holding | 1302 | EV Battery Capacity (Wh) | R | 2 | Returns an estimate of the EV Battery Capacity |
| TQ-DM100 | Holding | 1400 | Schedule Type | R | 1 | |
| TQ-DM100 | Holding | 1402 | Required Energy (Wh) | R | 2 | |
| TQ-DM100 | Holding | 1406 | Required Battery State (% 0-100) | R | 1 | |
| TQ-DM100 | Holding | 1408 | Scheduled Time (hhmmss) | R | 2 | |
| TQ-DM100 | Holding | 1412 | Scheduled Date (yymmdd) | R | 2 | |
| TQ-DM100 | Holding | 1502 | Charged Energy (Wh) | R | 1 | Sum of charged energy for the current session |
| TQ-DM100 | Holding | 1504 | Start Time (hhmmss) | R | 2 | Start time of charging process |
| TQ-DM100 | Holding | 1508 | Charging Time (seconds) | R | 2 | Duration since beginning of charge |
| TQ-DM100 | Holding | 1512 | End Time (hhmmss) | R | 2 | End time of charging process |
| TQ-DM100 | Holding | 1600 | User ID | R | 2 | User ID (OCPP IdTag) from the current session. Bytes 0 to 3. |
| TQ-DM100 | Holding | 1602 | User ID | R | 2 | User ID (OCPP IdTag) from the current session. Bytes 4 to 7. |
| TQ-DM100 | Holding | 1604 | User ID | R | 2 | User ID (OCPP IdTag) from the current session. Bytes 8 to 11. |
| TQ-DM100 | Holding | 1606 | User ID | R | 2 | User ID (OCPP IdTag) from the current session. Bytes 12 to 15. |
| TQ-DM100 | Holding | 1608 | User ID | R | 2 | User ID (OCPP IdTag) from the current session. Bytes 16 to 19. |
| TQ-DM100 | Holding | 1620 | 15118 Smart vehicle detected | R | 1 | Returns 1 if an EV currently connected is a smart vehicle, or 0 if no EV connected or it is not a smart vehicle |
| TQ-DM100 | Holding | 2000 | Safe Current (Amps.) | R/W | 1 | Max. charge current under communication failure |
| TQ-DM100 | Holding | 2002 | Comm. Timeout (seconds) | R/W | 1 | Communication timeout |
| TQ-DM100 | Holding | 5000 | Charge Power (W) | W | 2 | |
| TQ-DM100 | Holding | 5004 | Charge Current (A) | W | 1 | |
| TQ-DM100 | Holding | 5006 | Charge Control | 1 | Unimplemented | |
| TQ-DM100 | Holding | 5008 | Charge Release | 1 | Unimplemented | |
| TQ-DM100 | Holding | 5900 | Free Charging | R/W | 1 | Unimplemented |
| TQ-DM100 | Holding | 5902 | Free Charging Mode | R/W | 1 | Unimplemented |
| TQ-DM100 | Holding | 6000 | Life Bit | R/W | 1 | 0/1 Toggle-Bit |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 100 | Firmware Version | R | 2 | Returns the Ebee Application version number (example: 0.91 = {0x30, 0x2E, 0x39, 0x31) 4.40 = {0x34, 0x2E, 0x34, 0x34}). |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 104 | OCPP CP Status | R | 1 | Charge Point status according to the OCPP spec. enumeration |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 105 | Error Codes 1 | R | 2 | Aggregated error states (see Spec. sheet for mask mappings) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 107 | Error Codes 2 | R | 2 | Aggregated error states (see Spec. sheet for mask mappings) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 109 | Error Codes 3 | R | 2 | Aggregated error states (see Spec. sheet for mask mappings) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 111 | Error Codes 4 | R | 2 | Aggregated error states (see Spec. sheet for mask mappings) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 120 | Protocol Version | R | 2 | Ebee Modbus TCP Server Protocol Version number (example: 0.6 = {0x30, 0x2E, 0x36}). |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 122 | Vehicle (Control Pilot) state | R | 1 | A=1, B=2, C=3, D=4, E=5 |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 123 | Vehicle (Control Pilot) state in Hex. format | R | 1 | A = 0x0A, B = 0x0B, etc. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 124 | Charge Point availability | R/W | 1 | Get/Set available/unavailable |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 131 | Safe Current (Amps.) | R/W | 1 | Max. charge current under communication failure |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 132 | Comm. Timeout (seconds) | R/W | 1 | Communication timeout |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 133 | Hardware current limit | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 134 | Operator current limit | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 135 | RCMB Mode | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 136 | RCMB Last RMS value (integral part) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 137 | RCMB Last RMS value (fractional part) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 138 | RCMB Last DC value (integral part) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 139 | RCMB Last DC value (fractional part) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 140 | Relays State | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 141 | Device ID | R | 1 | This register is a device identifier and always returns the value 0xEBEE (decimal 60398) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 142 | ChargePoint Model | R | 2 | ChargePoint Model. Bytes 0 to 3. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 144 | ChargePoint Model | R | 2 | ChargePoint Model. Bytes 4 to 7. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 146 | ChargePoint Model | R | 2 | ChargePoint Model. Bytes 8 to 11. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 148 | ChargePoint Model | R | 2 | ChargePoint Model. Bytes 12 to 15. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 150 | ChargePoint Model | R | 2 | ChargePoint Model. Bytes 16 to 19. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 152 | Plug lock detect | R | 1 | Status of plug lock detection |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 153 | Firmware Version | R | 1 | Returns the Ebee Application major version number |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 154 | Firmware Version | R | 1 | Returns the Ebee Application minor version number |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 155 | Firmware Version | R | 1 | Returns the Ebee Application patch version number |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 156 | Build Number | R | 2 | Returns the Ebee Application build number |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 158 | Error Events 1 | R | 2 | Aggregated error events (see Spec. sheet for mask mappings) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 160 | Error Events 2 | R | 2 | Aggregated error events (see Spec. sheet for mask mappings) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 162 | Error Events 3 | R | 2 | Aggregated error events (see Spec. sheet for mask mappings) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 164 | Error Events 4 | R | 2 | Aggregated error events (see Spec. sheet for mask mappings) no error code --- 0x1 no error code --- 0x2 no error code --- 0x4 no error code --- 0x8 no error code --- 0x10 01-02-017 --- 0x20 01-02-018 --- 0x40 no error code --- 0x80 01-03-005 --- 0x100 01-04-001 --- 0x200 01-04-010 --- 0x400 01-04-009 --- 0x800 01-04-006 --- 0x1000 01-04-008 --- 0x2000 01-04-011 --- 0x4000 01-04-012 --- 0x8000 01-04-013 --- 0x10000 01-04-002 --- 0x20000 01-04-003 --- 0x40000 01-06-002 --- 0x80000 01-03-007 --- 0x100000 |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 166 | Free Charging | R/W | 1 | 0 = Free charging disabled, 1 = Free charging enabled |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 167 | Free Charging Mode | R/W | 1 | Modes 0 to 5 (see Spec. sheet for details) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 168 | Manufacturer serial number | R | 2 | Manufacturer serial number. Bytes 0 to 3. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 170 | Manufacturer serial number | R | 2 | Manufacturer serial number. Bytes 4 to 7. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 172 | Manufacturer serial number | R | 2 | Manufacturer serial number. Bytes 8 to 11. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 174 | Manufacturer serial number | R | 2 | Manufacturer serial number. Bytes 12 to 15. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 176 | Manufacturer serial number | R | 2 | Manufacturer serial number. Bytes 16 to 19. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 178 | Manufacturer serial number | R | 2 | Manufacturer serial number. Bytes 20 to 23. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 180 | Manufacturer serial number | R | 1 | Manufacturer serial number. Byte 24 and ' |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 182 | Phytec-Board temperature | R/W | 2 | Phytec-Board temperature from comtraxx system |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 184 | Reservation expiry time | R | 2 | Reservation expiry time |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 200 | Energy L1 | R | 2 | Energy in Wh. (phase 1) from primary meter |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 202 | Energy L2 | R | 2 | Energy in Wh. (phase 2) from primary meter |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 204 | Energy L3 | R | 2 | Energy in Wh. (phase 3) from primary meter |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 206 | Power L1 | R | 2 | Power in W (phase 1) from primary meter |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 208 | Power L2 | R | 2 | Power in W (phase 2) from primary meter |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 210 | Power L3 | R | 2 | Power in W (phase 3) from primary meter |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 212 | Current L1 | R | 2 | Current in mA (phase 1) from primary meter |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 214 | Current L2 | R | 2 | Current in mA (phase 2) from primary meter |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 216 | Current L3 | R | 2 | Current in mA (phase 3) from primary meter |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 218 | Total Energy | R | 2 | Total Energy in Wh. from primary meter |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 220 | Total Power | R | 2 | Total Power in Wh. from primary meter |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 222 | Voltage L1 | R | 2 | Returns the voltage of phase 1 of the ocpp meter in V. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 224 | Voltage L2 | R | 2 | Returns the voltage of phase 2 of the ocpp meter in V. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 226 | Voltage L3 | R | 2 | Returns the voltage of phase 3 of the ocpp meter in V. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 500 | (Reserved) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 501 | (Reserved) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 502 | (Reserved) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 503 | (Reserved) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 504 | (Reserved) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 505 | (Reserved) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 506 | (Reserved) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 507 | (Reserved) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 508 | (Reserved) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 509 | (Reserved) | R | 1 | |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 600 | DLM Mode | R | 1 | Indicates the DLM mode configured for this device. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 610 | DLM EVSE Sub-distribution Limit L1 | R | 1 | Overall current limit for DLM available for EVs |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 611 | DLM EVSE Sub-distribution Limit L2 | R | 1 | Overall current limit for DLM available for EVs |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 612 | DLM EVSE Sub-distribution Limit L3 | R | 1 | Overall current limit for DLM available for EVs |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 613 | DLM Operator EVSE Sub-distribution Limit L1 | R/W | 1 | Operator current limit for DLM available for distribution to EVs |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 614 | DLM Operator EVSE Sub-distribution Limit L2 | R/W | 1 | Operator current limit for DLM available for distribution to EVs |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 615 | DLM Operator EVSE Sub-distribution Limit L3 | R/W | 1 | Operator current limit for DLM available for distribution to EVs |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 620 | DLM External Meter support | R | 1 | Value of this register is 1 when External Meter is enabled, 0 when disabled |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 621 | DLM Number of Slaves connected | R | 1 | The number of DLM Slaves connected to this Master device |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 630 | DLM Overall Current applied L1 | R | 1 | Overall Current (A) the DLM Master is currently applying (sum of current distributed among the slaves) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 631 | DLM Overall Current applied L2 | R | 1 | Overall Current (A) the DLM Master is currently applying (sum of current distributed among the slaves) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 632 | DLM Overall Current applied L3 | R | 1 | Overall Current (A) the DLM Master is currently applying (sum of current distributed among the slaves) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 633 | DLM Overall Current available L1 | R | 1 | Overall Current (A) the DLM Master has available to distribute among the slaves |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 634 | DLM Overall Current available L2 | R | 1 | Overall Current (A) the DLM Master has available to distribute among the slaves |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 635 | DLM Overall Current available L3 | R | 1 | Overall Current (A) the DLM Master has available to distribute among the slaves |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 701 | Scheduled Time (hhmmss) | R | 2 | Scheduled departure time (format is `hhmmss` in big-endian packed BCD with left zero padding) – 15118 only |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 703 | Scheduled Date (yymmdd) | R | 2 | Scheduled departure time (format is `ddmmyy` in big-endian packed BCD with left zero padding) – 15118 only |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 705 | (deprecated) Charged Energy | R | 1 | Sum of charged energy for the current session (Wh) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 706 | Signaled Current | R | 1 | The maximum current that's being signaled to the EV for charging |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 707 | Start Time (hhmmss) | R | 2 | Start time of charging process |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 709 | (deprecated) Charging Duration (seconds) | R | 1 | Duration since beginning of charge |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 710 | End Time (hhmmss) | R | 2 | End time of charging process |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 712 | Minimum current limit | R | 1 | Minimum current limit for charging |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 713 | EV Required Energy (Wh) | R | 2 | Returns the amount of energy in Wh required by the EV |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 715 | Max. Current EV | R | 1 | This is the maximum current with which the EV can charge |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 716 | Charged Energy | R | 2 | Sum of charged energy for the current session (Wh) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 718 | Charging Duration (seconds) | R | 2 | Duration since beginning of charge |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 720 | User ID | R | 2 | User ID (OCPP IdTag) from the current session. Bytes 0 to 3. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 722 | User ID | R | 2 | User ID (OCPP IdTag) from the current session. Bytes 4 to 7. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 724 | User ID | R | 2 | User ID (OCPP IdTag) from the current session. Bytes 8 to 11. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 726 | User ID | R | 2 | User ID (OCPP IdTag) from the current session. Bytes 12 to 15. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 728 | User ID | R | 2 | User ID (OCPP IdTag) from the current session. Bytes 16 to 19. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 730 | EV Battery State (% 0-100) | R | 1 | Returns an estimate of the SoC |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 740 | 15118 Smart vehicle detected | R | 1 | Returns 1 if an EV currently connected is a smart vehicle, or 0 if no EV connected or it is not a smart vehicle |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 741 | EVCCID - 15118 only | R | 2 | ASCII representation of the Hex. Values corresponding to the EVCCID. Bytes 0 to 3. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 743 | EVCCID - 15118 only | R | 2 | ASCII representation of the Hex. Values corresponding to the EVCCID. Bytes 4 to 7. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 745 | EVCCID - 15118 only | R | 2 | ASCII representation of the Hex. Values corresponding to the EVCCID. Bytes 8 to 11. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 747 | Remaining time to full SoC - 15118 only | R | 2 | Returns the remaining time in seconds to full SoC |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 749 | Is in charging loop - 15118 only | R | 1 | Returns 1 if the EV/EVSE are on a charging loop, 0 otherwise |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 752 | Auth. source | R | 1 | Source of authorization (RFID, Input, Remote, 15118, Autocharge, Freecharge, Power Loss... ) |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 1000 | Hems Current Limit (A) | R/W | 1 | Current limit of the HEMS module in Amps |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 1110 | User ID | W | 2 | Write user ID (OCPP IdTag) for the current session. Bytes 0 to 3. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 1112 | User ID | W | 2 | Write user ID (OCPP IdTag) for the current session. Bytes 4 to 7. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 1114 | User ID | W | 2 | Write user ID (OCPP IdTag) for the current session. Bytes 8 to 11. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 1116 | User ID | W | 2 | Write user ID (OCPP IdTag) for the current session. Bytes 12 to 15. |
| Open Modbus Charge Control Interface (OMCCI) | Holding | 1118 | User ID | W | 2 | Write user ID (OCPP IdTag) for the current session. Bytes 16 to 19. |