Huawei AR500 Series Hardware Description page 453

Huawei
AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
Attribute
Standards compliance
Working mode
RS485 interface
RS485 interfaces are used for data collection.
Table 3-339 RS485 interface attributes
Attribute
Connector type
Standards compliance
Working mode
Rate
Cable type
DI interface
DI interfaces are used to observe remote communication input and voltage level signals.
Table 3-340
Table 3-340 DI interface attributes
Attribute
Connector type
Signal type
Cable type
Heat Dissipation
The AR531-2C-H router has no fans and uses natural heat dissipation.
Technical Specifications
Table 3-341
Issue 10 (2019-03-06)
lists DI interface attributes.
lists technical specifications of the AR531-2C-H router.
Copyright © Huawei Technologies Co., Ltd.
Description
USB 2.0
Host
Table 3-339 lists the RS485 interface attributes.
Description
8-pin connector (leftmost 4 pins for RS485
interfaces)
RS485
Half-duplex
1200-115200 bit/s
6.2.11 8-Pin Phoenix Connector
(RS485/DI)
Description
8-pin connector (rightmost 4 pins for DI
interfaces)
Passive DI signals, Boolean value (short
circuit and open circuit)
6.2.11 8-Pin Phoenix Connector
(RS485/DI)
3 Chassis
442