Huawei SmartLogger3000 - Page 38

Appearance AI Port Description
AI1 1 Supports one channel of
voltage-type (0–10 V) AI
signals.
GND
AI2 2 Support three channels of
current-type (0–20 mA or 4–
20 mA) AI signals.
GND
AI3 3
GND
AI4 4
GND
● PT ports: can connect to two PT100/PT1000 temperature sensors.
Appearance PT Port Description
PT1 + Can connect to a three-wire or
two-wire PT100/PT1000
temperature sensor.
● Three-wire: cable length <
2 m for PT100; cable length
< 20 m for PT1000
● Two-wire: cable length < 2
m for a PT temperature
sensor
–
GND
PT2 +
–
GND
● COM ports: RS485 communications port, supporting three independent RS485
channels and the access of devices that comply with the Modbus-RTU, IEC103,
or DL/T645 protocol.
Appearance
COM Port Description
COM1,
COM2, and
COM3
+ RS485A, RS485 dierential
signal+
– RS485B, RS485 dierential
signal–
Power Ports
● Input power ports: There are two input power ports.
SmartLogger3000
User Manual 2 Product Overview
Issue 10 (2022-08-20) Copyright © Huawei Technologies Co., Ltd. 26