Huawei NetCol5000-A User Manual page 81

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
Figure 3-48 Pin definition of a Y-split cable
Figure 3-49 Y-split cable connection for teamwork control
Setting the DIP Switch
Issue 13 (2019-01-15)
 Figure 3-49 shows the scenario where every two smart cooling products connect to the EMS over a
Y-split cable. Determine the number of Y-split cables used for grouped monitoring based on
performance requirements.

When the EMS monitors smart cooling products using the RS485 protocol, the time needed for
collecting all data from a single smart cooling product is 3 seconds. In the teamwork mode of
cascading using an RS485 bus for monitoring, it takes the host 3 seconds multiplied by N to collect
data from N smart cooling products in the group. For example, the time needed for collecting data
from four smart cooling products is 12 seconds. If the host needs more time to collect data from all
smart cooling products than what the EMS performance requires, use the Y-split cable connection
scheme shown in Figure
Method of distinguishing the two types of main control boards:
 The Arm7 main control board has two DIP switches, while the M4 main control board has only one
DIP switch.
 The software version of the Arm7 main control board is ACC V100R001CxxSPCxxx, while that of
the M4 main control board is ACC V100R002C00SPCxxx.
Copyright © Huawei Technologies Co., Ltd.
3-49.
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