Huawei SMU01A User Manual page 14

SMU01A
User Manual
Communications
Ports
NOTE:
SD Card Port
A secure digital (SD) card is inserted into this port to store a large capacity of data. The SD
card port is not used in this version.
Issue 06 (2015-10-08)
Communications
Mode
 The COM port is a multiplexed as a network port and RS485/RS232 port. The SMU implements
adaptive detection 30 min after startup. If no network cable is connected within 30 min, it
communicates through RS485/RS232 by default. To use the network port for communication, perform
network detection on the LCD to implement another adaption. LCD path: Main Menu > Control >
Site Summary > Network Detect
 After the port is selected, only either of the communication modes RS485 and RS232 can be used at a
time.
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Communications
Parameter
2 Panel and Ports
Protocol
Compliance
9