Connecting Multiple Devices - Huawei SmartLogger2000 series Quick Manual

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Ensure that the SmartLogger COM+ (RS485A) port connects to the 2 (RS485A OUT) terminal on
the SUN2000 terminal block, and that the SmartLogger COM– (RS485B) port connects to the 4
(RS485B OUT) terminal on the SUN2000 terminal block.
5.3

Connecting Multiple Devices

1. Each SmartLogger can connect to a maximum of 200 devices. You are advised to connect fewer
than 30 devices to each RS485 route.
2. Each SmartLogger2000-10/10-B/11-B connects to a maximum of 80 SUN2000s. Each
SmartLogger2000-10-C/11-C connects to a maximum of 150 SUN2000s.
3. Huawei equipment and third-party equipment need to be connected, you are advised to connect
them to different COM ports. If only Huawei equipment or third-party equipment needs to be
connected, connect it to any idle COM port.
4. Verify that devices using the same protocol are connected to the same COM port. Devices using
different protocols (for example, the box-type transformer which uses the IEC103 protocol and the
power meter which uses the DL/T645 protocol) need to be connected to separate COM ports.
5. If the model of the PID module connecting to the SmartLogger is SmartPID2000, one
SmartLogger can connect to two PID modules.
Recommended Connection Mode
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Connecting Cables to AC Ports
NOTE
1. If the SUN2000 is equipped with a PLC device, the SmartLogger can communicate with the
SUN2000 through an AC power cable.
2. If the SmartLogger2000-10-C communicates with the SUN2000 over PLC, each
SmartLogger2000-10-C can connect to a maximum of 80 SUN2000s over the AC port, and can
connect to a maximum of 150 SUN2000s over the AC and COM ports when an external PLC
CCO is connected.
3. If the SmartLogger uses an AC power cable for communication, an MCB or a knife switch needs
to be installed to prevent device damage in the case of short circuits.
4. If the SmartLogger is connected to the SUN2000 through an AC power cable, no RS485
communications cable needs to be connected.
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