Inverter Communication Protocol & Commissioning Center
Solar EPCs and installers eliminate on-site troubleshooting delays with Summit's pre-loaded multi-protocol BMS firmware. Native dual-isolated CAN 2.0A/B (500 kbps) and RS485 Modbus RTU guarantee seamless plug-and-play handshakes with Tier-1 hybrid inverters.
Verified Hybrid & Off-Grid Inverter Brands
Real-world certified BMS telemetry including state-of-charge (SoC), individual cell voltages, temperature, and dynamic charge current limits.
| Inverter Manufacturer | Supported Inverter Series | Protocol & Interface | Screen Parameter | Verification |
|---|---|---|---|---|
| Deye CAN / BMS Port (RJ45) | SUN-5K/8K/10K/12K-SG04LP3, SUN-3/5/6K-SG01HP3 Series | CAN 2.0B (500 kbps) & RS485 Modbus | Lithium Mode: 00 (CAN) | ✓ Verified Plug & Play |
| Growatt BMS Port (RJ45) | SPF 3000-5000TL HVM, SPH 4000-10000TL3, WIT/WIS Series | CAN / RS485 (Baud: 9600 / 115200) | Program 05: LI | Program 36: 51 | ✓ Verified Plug & Play |
| Victron Energy VE.Can / BMS-Can Port | MultiPlus-II 48V, Quattro 48V via Cerbo GX / Venus OS | VE.Can (Baud rate: 500 kbps) | Profile: CAN-bus BMS (500 kbit/s) | ✓ Certified Compatible |
| Solis CAN Port (RJ45) | RHI-3P(5-10)K-HVES-5G, S5-EH1P, S6 Series | CAN 2.0A (500 kbps) / RS485 | Battery Select: User-Def / CAN | ✓ Verified Plug & Play |
| GoodWe BMS Port (RJ45) | ET Series (5K~10K), ESA, ES G2, Lynx Home | CAN 2.0B / RS485 (500 kbps / 9600) | SolarGo: Lithium / CAN Profile | ✓ Verified Plug & Play |
| SMA RJ45 Com-Sync | Sunny Island 4.4M / 6.0H / 8.0H Series | CAN Bus Standard (500 kbps) | Batt Type: Li-Ion / CAN Open | ✓ Verified Plug & Play |
| Sofar Solar BMS Port (RJ45) | HYD 3-20KTL-3PH, ME3000SP, ESI Series | CAN / RS485 (500 kbps / 9600) | Battery Model: Default CAN | ✓ Verified Plug & Play |
Hardware Communication Architecture & Cabling Standards
Summit battery cabinets feature dual RJ45 ports (CAN / RS485 for inverter uplink, and RS485 Link for inter-cabinet daisy chaining). Standard CAT5e/CAT6 STP shielded cables are recommended.
Dual-Bus Architecture
Independent ports isolate high-speed inverter CAN communication from inter-cabinet RS485 daisy-chain telemetry, preventing packet collisions across large multi-cabinet strings.
EMI Shielding & Cabling
Always deploy standard STP (Shielded Twisted Pair) CAT5e/CAT6 cables. Maintain a minimum 10 cm physical separation from high-current DC power cables to eliminate EMI interference.
Galvanic Isolation & Termination
Built-in 2.5 kV RMS galvanic isolation safeguards communication circuitry against ground potential shifts and industrial surges. Internal 120Ω termination ensures signal integrity.
1~16 Unit Parallel BMS DIP Switch Binary Addressing Guide
When scaling Summit battery cabinets in parallel (from 16kWh up to 256kWh), each cabinet's BMS must be configured with a unique hardware binary DIP address. Only Pack 1 (Master) communicates directly with the hybrid inverter; all other packs (Slaves) communicate with the Master via internal RS485 Link.
DIP Switch set to Address 01 (1 0 0 0). Connect the CAN/RS485 cable directly from Pack 1's BMS port to the hybrid inverter's BMS port.
DIP Switches set to Addresses 02 through 16 sequentially. Daisy-chain using standard RJ45 patch cables: Pack 1 RS485-OUT → Pack 2 RS485-IN → Pack 3 RS485-IN...
Pack 1 aggregates total capacity (e.g. 256kWh), sum of charge/discharge currents, and highest/lowest cell voltages, presenting one unified battery bank to the inverter.
| Cabinet Unit | Binary Code | DIP 1 | DIP 2 | DIP 3 | DIP 4 | Assigned Address | System Role & Connection |
|---|---|---|---|---|---|---|---|
| Pack 1 (Master) | 1 0 0 0 | ON | OFF | OFF | OFF | 0x01 | Master (BMS to Inverter CAN/RS485) |
| Pack 2 (Slave 1) | 0 1 0 0 | OFF | ON | OFF | OFF | 0x02 | Slave (Link to Pack 1 via RS485) |
| Pack 3 (Slave 2) | 1 1 0 0 | ON | ON | OFF | OFF | 0x03 | Slave (Link to Pack 2 via RS485) |
| Pack 4 (Slave 3) | 0 0 1 0 | OFF | OFF | ON | OFF | 0x04 | Slave (Link to Pack 3 via RS485) |
| Pack 5 (Slave 4) | 1 0 1 0 | ON | OFF | ON | OFF | 0x05 | Slave (Link to Pack 4 via RS485) |
| Pack 6 (Slave 5) | 0 1 1 0 | OFF | ON | ON | OFF | 0x06 | Slave (Link to Pack 5 via RS485) |
| Pack 7 (Slave 6) | 1 1 1 0 | ON | ON | ON | OFF | 0x07 | Slave (Link to Pack 6 via RS485) |
| Pack 8 (Slave 7) | 0 0 0 1 | OFF | OFF | OFF | ON | 0x08 | Slave (Link to Pack 7 via RS485) |
| Pack 9 (Slave 8) | 1 0 0 1 | ON | OFF | OFF | ON | 0x09 | Slave (Link to Pack 8 via RS485) |
| Pack 10 (Slave 9) | 0 1 0 1 | OFF | ON | OFF | ON | 0x10 | Slave (Link to Pack 9 via RS485) |
| Pack 11 (Slave 10) | 1 1 0 1 | ON | ON | OFF | ON | 0x11 | Slave (Link to Pack 10 via RS485) |
| Pack 12 (Slave 11) | 0 0 1 1 | OFF | OFF | ON | ON | 0x12 | Slave (Link to Pack 11 via RS485) |
| Pack 13 (Slave 12) | 1 0 1 1 | ON | OFF | ON | ON | 0x13 | Slave (Link to Pack 12 via RS485) |
| Pack 14 (Slave 13) | 0 1 1 1 | OFF | ON | ON | ON | 0x14 | Slave (Link to Pack 13 via RS485) |
| Pack 15 (Slave 14) | 1 1 1 1 | ON | ON | ON | ON | 0x15 | Slave (Link to Pack 14 via RS485) |
| Pack 16 (Slave 15) | 0 0 0 0 | OFF | OFF | OFF | OFF | 0x16 | Slave (Max 256kWh Expanded Array) |
Inverter Touchscreen & App Setup Walkthrough
Select your inverter brand below to view exact screen menu paths, protocol selection values, and parameter validation benchmarks.
Deye / Sunsynk Hybrid Inverter Commissioning
Compatible with SUN-5K/8K/10K/12K-SG04LP3 low-voltage series
Connect the standard RJ45 cable from Summit Cabinet CAN port to the Deye inverter's CAN Port.
On Deye touchscreen, press Gear Icon → Battery Setting → Batt Mode. Check the checkbox for Lithium.
In the Lithium Mode input box, enter 00 (Pylontech CAN compatible). Press Enter / Save.
Open Li-BMS Page: Verify Pack Voltage (~51.2V), real-time SoC %, charge current limit (150A per cabinet), and 0 fault alarms.
Need a Custom CAN Protocol or Regional Inverter Firmware?
Working with a specialized inverter brand not listed above? Summit's in-house electrical and BMS engineering team can customize CAN ID frames, baud rates, and Modbus registers with verified firmware delivery within 48 hours.