Huawei RMS-SNMP01A - Page 20

RMS-SNMP01A SNMP Card
User Manual
3 Installation and Basic Settings
Issue 08 (2020-01-09)
Copyright © Huawei Technologies Co., Ltd.
12

Set the address of the AI/DI module to 3 (toggle switches 1 to 3 are used to set the address of the
AI/DI module, and toggle switch 4 is used to enable or disable the resistance for the RS485
interface). Toggle switches 1 and 2 are set to ON and toggle switch 3 is set to OFF, as shown in
Figure 3-5.

COM_IN port is for communication. The baud rate is 9600.

If both the CIM and independent AI/DI module are deployed, use the COM_OUT port to cascade
with the CIM.

Electrical level is output from the AI/DI_1 port. Pin 3 of the AI/DI_1 port is DC 12 V, 54 mA, and
pin 8 of the AI/DI_1 port is GND, as shown in Figure 3-5.

When the signal is unstable due to signal reflection which is caused by the long communication
route (greater than 200 m), set toggle switch 4 to ON for the farthest AI/DI module, as shown in
Figure 3-5. After the DIP switch settings are modified, power off and restart the AI/DI module for
the new settings to take effect.

The AI/DI_1 port can connect to the UPS run indicator. Table 3-3 shows the indicator status.
Figure 3-5 AI/DI module
(1) Port for the SNMP card
(2) Port for DC 12 V power
(3) DC 15 V power input
(adapter required)
(4) DIP switch
(5) Cascading port
Table 3-3 Status of UPS run indicator connected to the AI/DI_1 port
Single
UPS/Parallel
System
UPS Working
Modes
AI/DI_1 Port
Output Voltage
UPS Run
Indicator Status
Single UPS
Bypass mode or no
power supply mode
12 V
On
Single UPS
Normal mode,
battery mode, mains
ECO mode, or
battery ECO mode
0 V
Off
Parallel system
All UPSs work in
normal mode,
battery mode, mains
ECO mode, or
0 V
Off