SMU02C appearance
The SMU02C (SMU for short) is a compact high-end monitoring module that monitors and manages Huawei's box-type and cabinet-type power systems. The SMU can manage a site power system through the liquid crystal display (LCD), web user interface (WebUI) and Huawei NetEco.
(1) SD card slot (2) Run indicator (3) Minor alarm indicator
(4) Major alarm indicator (5) Buttons (6) USB ports (protected by a security mechanism)
(7) RS485/RS232 port (8) Fast Ethernet (FE) port (9) CAN communications port
(10) LCD
Indicators
Name | Color | Status | Description |
Run indicator | Green | Off | The SMU is faulty or has no DC input. |
Blinking slowly (0.5 Hz) | The SMU is running properly and communicating with the host properly. | ||
Blinking fast (4 Hz) | The SMU is running properly but fails to communicate with the host properly. | ||
Minor alarm indicator | Yellow | Off | No minor or warning alarm is generated. |
Steady on | A minor or warning alarm is generated. | ||
Major alarm indicator | Red | Off | No critical or major alarm is generated. |
Steady on | A critical or major alarm is generated. |
Buttons
SD Card Slot
SD card is used for storing the camera capture images, maximum support 32 G capacity.
USB Ports
You can quickly deploy a site, import and export configuration files, export running logs, and upgrade software by inserting the USB flash drive that is specially used for site deployment into the USB port.
After installing the specific WiFi module using the USB port, you can access the WebUI locally, which facilitates operations.
Notice：
Using WiFi modules provided by another vendor may cause data loss or function exception. Consequences arising from this will not be borne by Huawei.
Communications Ports
Communications Port | Communications Parameter | Communications Protocol |
FE | 10/100M autonegotiation | HTTPS, NetEco protocol, SNMP, and TCP-Modbus protocol |
RS485/RS232 | Baud rate: 1200 bit/s, 2400 bit/s, 4800 bit/s, 9600 bit/s, 14400 bit/s, 19200 bit/s, 115200 bit/s | Master/slave protocol, YDN protocol, and Modbus protocol |
CAN | Baud rate: 125 kbit/s | CAN protocol |
NOTE All these ports are protected by a security mechanism. | ||
Pin definitions for the FE port
Pin | Signal | Description |
1 | TX+ | Transmits data over FE |
2 | TX- | |
3 | RX+ | Receives data over FE |
6 | RX- | |
4/5/7/8 | NA | - |
Pin definitions for the RS485/RS232 port
Pin | Signal | Description |
1 | TX+ | Transmits data over RS485 |
2 | TX- | |
4 | RX+ | Receives data over RS485 |
5 | RX- | |
3 | RX232 | Receives data over RS232 |
7 | TX232 | Transmits data over RS232 |
6 | PGND | Connects to the ground |
8 | NA | – |
Description for the CAN port pins
Pin | Signal | Description |
1 | RX+ | Receives data over RS485 |
2 | RX- | |
3 | NA | - |
4 | TX+ | Sends data over RS485 |
5 | TX- | |
6 | NA | - |
7 | CANH | CAN high level signal |
8 | CANL | CAN low level signal |
