The DI/DO interfaces are used to detect voltage level signals or deliver instructions. Table
3-15 lists DI/DO interface attributes.
Table 3-15 DI/DO interface attributes
Attribute Description
Connector type RJ45
Signal type LVTTL voltage level, digital input/output
Cable type 6.2.7 RJ-45 Connector (DI/DO)
RS485/RS422 interface
The RS485/RS422 interface can be connected to a meter or monitoring terminal. Table 3-16
lists RS485/RS422 interface attributes.
Table 3-16 RS485/RS422 interface attributes
Attribute
Description
Connector type 5-pin Phoenix terminal block
Standards compliance RS485/RS422
Working mode
l RS485: half-duplex
l RS422: full-duplex
Communication distance 1 km (> 19 kbit/s)
Baud rate 1200/2400/4800/9600/115200
Cable type 6.2.8 5-Pin Phoenix Connector (RS485/
RS422)
Heat Dissipation
The AR502EG-L router has no fans and uses natural heat dissipation.
Technical Specifications
Table 3-17 lists technical specifications of the AR502EG-L router.
Table 3-17 AR502EG-L technical specifications
Item
Specification
System parameters
Processor Dual-core, 700 MHz
Huawei
AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
3 Chassis
Issue 10 (2019-03-06) Copyright © Huawei Technologies Co., Ltd. 92
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