Connecting Multiple Devices - Huawei SmartLogger1000 Quick Manual

NOTICE
1. The RS485 IN and RS485 OUT ports on the SUN2000 can both connect to the SmartLogger.
This document uses the RS485 OUT port as an example to describe the connection between the
SUN2000 and the SmartLogger.
2. Verify that the COM+ (RS485A) port on the SmartLogger connects to protection port 2 or 8 on the
RS485 signal SPD, and that the COM– (RS485B) port on the SmartLogger connects to protection
port 6 or 12 on the RS485 signal SPD.
3. Verify that surge port 1 or 7 on the RS485 signal SPD connects to terminal 6 (RS485A OUT) on
the SUN2000 terminal block, and that surge port 5 or 11 on the RS485 signal SPD connects to
terminal 8 (RS485B OUT) on the SUN2000 terminal block.

Connecting Multiple Devices

6.4
NOTICE
1. A maximum of 80 devices can be connected to one SmartLogger. You are advised to connect
less than 30 devices to each RS485 route.
2. Ensure that the devices connecting to the same COM port comply with the same communications
protocol.
Recommended Connection Mode
7
Connecting a Cable to the DI Port
NOTE
1. In Germany and some other European areas, a ripple control receiver is used to convert power
grid scheduling signals into dry contact signals, in which a dry contact is required.
2. Two-core or multiple-core cables with a cross-sectional area of 1 mm
12
2
are recommended.