Huawei ECC800 User Manual page 37

ECC800 Data Center Controller
User Manual (for ECC800-Pro)
Item
POE
DIP switch
E-label 4.0
Communications Port
The following table describes the pin assignment for ports COM1/AIDI_1 to COM8/AIDI_8.
Table 3-19 Pin assignment for ports COM1/AIDI_1 to COM8/AIDI_8
Item
Pin sequence
The following table describes the pin assignments for the COM_IN and COM_OUT ports.
Table 3-20 Pin assignment for the COM_IN and COM_OUT ports
Item
Pin sequence
Issue 06 (2020-04-22)
Specifications
COM7/AIDI_7 and COM8/AIDI_8 form a group).
 The 12 V DC power supply can be switched on or off and is on
by default.
Connects to the ECC800-Pro through the POE port.
 One 4-bit DIP switch is used to set the RS485 address.

OFF indicates 0 and ON indicates 1.
 Bit 1 is the least significant bit, and bit 4 is the most significant
bit. For example, if the board address is 5, the corresponding
bits are ON, OFF, ON, and OFF, and the corresponding binary
number is 1010 (ON is 1 and OFF is 0).
Supported
Description
Pin1 RS485+
Pin2 RS485-
Pin3 12V
Pin4 RS485+
Pin5 RS485-
Pin6 D-
Pin7 D+
Pin8 GND
Description
Pin1 RS485+
Pin2 RS485-
Pin3 12 V (input power, supplying power to the module)
Pin4 RS485+
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3 Device Description
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