SmartLogger1000
User Manual
7 WebUI
Issue 12 (2019-01-15)
Copyright © Huawei Technologies Co., Ltd.
225
7.10.2.5 Setting Modbus TCP Parameters
Set Modbus TCP parameters for the SmartLogger to communicate with a third-party NMS.
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Figure 7-49
Setting Modbus TCP parameters
Modbus TCP is a general standard protocol without a security authentication mechanism. To reduce
network security risks, the function of connecting to a third-party NMS using Modbus TCP is
disabled by default. To use this function, set
Link setting
to
Enable(Limited)
or
Enable(Unlimited)
. If you select
Enable(Limited)
, the SmartLogger can communicate with up to
five third-party NMSs whose IP addresses are set under
Modbus TCP
. If you select
Enable(Unlimited)
, the SmartLogger can communicate with all third-party NMSs with valid IP
addresses.
If the function of connecting to a third-party NMS using Modbus TCP is enabled, data will be
transmitted without being encrypted, which may result in user data theft. Therefore, exercise caution
when deciding to enable this function.
In most cases, set
Address mode
to
Comm. Address
. If the devices connected to the COM ports of
the SmartLogger have duplicate communications addresses, you must set
Address mode
to
Logical
address
.
7.10.2.6 Setting IEC103 Parameters
Third-party devices that use the IEC103 interface protocol may be connected to PV plants.
The SmartLogger can read the information about such third-party devices and upload the
information to the NMS, enhancing the PV plant solution.
As Huawei inverter devices (such as SUN2000s) support protocols different from third-party
devices that use standard IEC103 (such as box-type transformers, combiner boxes, and
inverters), they cannot be connected in series on the same RS485 bus.
