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Product details
MS-1008 is an internal dual core, non-stop (uninterrupted work) device
Designed specifically to meet the requirements of RS-485 large-scale systems in complex electromagnetic field environments
RS-485 bus division hub (HUB). This product supports transmission speeds up to
115.2KBPS， In order to ensure the safety and reliability of data communication, the RS-485 interface terminal adopts
Using optoelectronic isolation technology to prevent lightning surges from entering the converter and equipment, the built-in light
Electrical isolator and 1500W surge protection circuit, capable of providing 2500V isolation power
Pressure can effectively suppress lightning and ESD, while also effectively preventing them
To prevent lightning strikes and common ground interference, an external switch power supply is used for power supply, ensuring safety and reliability,
Very suitable for outdoor engineering applications.
In RS-485 working mode, the discrimination circuit used can automatically sense the direction of the data stream
To enable automatic switching of control circuits, easily solving RS-485 transceiver conversion
Delay issue. The RS-485 interface has a transmission distance greater than 1200 meters and stable performance. broad
Widely used in highway toll systems, road monitoring systems, and power collection systems,
It is a high-performance and cost-effective data interface conversion product.
MS-1008 RS-485 HUB provides star shaped RS-485 bus connection. Each port
All have short-circuit and open circuit protection. Optoelectronic isolation 2500V, users can easily improve it
RS-485 bus structure divides network segments to improve communication reliability. When struck by lightning or equipment
When a backup fault occurs, the problematic network segment will be isolated to ensure the safety of other network segments
Normal operation. This performance greatly improves the reliability of existing RS-485 networks,
Effectively shortened the maintenance time of the network. Reasonably utilize MS-1008 RS-485
HUB can help you design a unique and highly reliable RS-485 system.
performance parameter
1. Interface features: The interface is compatible with EIA/TIA RS-232C and RS-485 standards
2. Electrical interface: RS-232C interface with 5PIN terminal block 1-3 pin RS-485
The interface is a 5PIN terminal block with 4-5 pins
3. Transmission medium: twisted pair or shielded wire
4. Working mode: Asynchronous half duplex
5. Signal indication: Eleven signal indicator lights, power supply (PWR), transmission (TXD)
Reception (RXD), Fault (E1-E8)
6. Isolation degree: Isolation voltage 2500VRMS 500VDC continuous DC/DC isolation module
7. Transmission rate: 300BPS-115.2K
8. Protection level: RS-232 interface ± 15KV ESD protection RS-485 interface per line
1500W lightning surge protection
9. Transmission distance: 0-5 kilometers (115200-300 BPS)
10. Size: 210mmX130mmx33mm
11. Operating environment: -40 ° C to 80 ° C, relative humidity of 5% to 95%
Product panel and signal indication
The front panel of MS-1008 has a total of 11 indicator lights, and the rear panel has 1 5PIN wiring
The terminals are RS-485 and RS-232 input terminals, with a total of eight ports consisting of eight 3PIN wiring terminals
Optoelectronic isolation output terminal.
The front panel indicator lights of MS-1008 have the following meanings
PWR power indicator, normally red
TXD data transmission indicator, normally flashing green, indicating that the data is from INPUT
Send to OUTPUT ports 1 to 8
RXD data reception indicator, normally flashing yellow, indicating data from OUTPUT
Send from port 1 to port 8 to INPUT port
E1-E8 port 1-port 8 fault warning indicator light. When it is constantly on, it indicates that it corresponds to port 1-port 8
When the RS-485 interface device connected has a short circuit or signal reverse connection, the E1 light and
Corresponding to port 1, E8 light corresponds to port 8, and users can judge based on the fault warning indicator light
Disconnect the faulty port and its connected faulty equipment
Electrical interface and its definition
Definition of RS-232C/RS-485 interface
Figure 3 RS-232/RS-485 input interface Figure 4 RS-485 output interface
MS-1008 RS-485 Product Ordering Information
The product includes 1 interface converter, user manual, and certificate of conformity.
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