HJ5203 Hardware Manual Version V1.2
Hardware parameters
Specification
Processor | 32-bit low-power processor |
Network | 3 port 10M/100M |
RS485 | 2 channel |
input power | DC 9~28V |
Power consumption | 4W |
Operating temperature | -20~70°C |
Storage temperature | -30 ~85°C |
Working humidity | 5 – 95%RH |
Certification | FCC/CE |
Network parameters
Interface speed | 10/100M Auto |
Electrical isolation | 2KV |
Network Protocol | IP/TCP/UDP/DHCP/DHCPD/DNS/HTTP/SNMP |
Maximum number of connections | 4096 |
RS485 Parameters
Number of ports | 2 |
Baud rate | 300~230400BPS |
Data bits | 5/6/7/8 Bits |
Stop bit | 1/2 Bits |
Check | None/Odd/Event |
Buffer | 4MBytes |
Interface | Port 1(A1,B1)/Port 2(A2,B2) |
Digital input
Number of channels | 8 |
Input type | Optical isolation PNP/NPN |
Rated voltage | 24V |
Input Current | 0.05A |
Response time | 1 ms |
Protect | Overcurrent and overvoltage |
Digital output
Number of channels | 8 |
Input type | PNP |
Rated voltage | 24V |
Input Current | 0.2A |
Response time | 1 ms |
Protect | Overcurrent and overvoltage |
Terminal wiring diagram
HJ5203 (8 PNP outputs)

Terminal wiring method
Connect to power supply/RS485-1/2/cascade expansion

The first RS485 port: A1, B1 and GN1 (RS485 digital ground).
The first RS485 port: A2, B2 and GN2 (RS485 digital ground).
Cascade expansion module interface: LRX, LTX.
PNP output wiring method
M1, DQ0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 24V are a group, the common terminal M1 is connected to 0V, and the 24V power terminal is connected to +24V of the power supply.

Digital input wiring method
CM1, DI/0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7 are grouped into a group, CM2, DI/1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7 are grouped into a group, the common terminal CMx (x value 1, 2, 3, 4) is connected to 0V or 24V. If the common terminal is connected to 0V, the output type of the input DI point connection is PNP mode. If the common terminal is connected to +24V, the output type of the input DI point connection is NPN mode.
how to connect the PNP input type:

how to connect the NPN input type
