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Dimension
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Specification
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Standards: EIA RS-232C, RS-485, RS422 standard
RS-232 signal: TX, RX, GND
RS-422 signal: T+, T-, R+, R-, GND
RS-485 signal: D+, D-, GND
Working mode: Asynchronism, point to point or multi point, 2 wire
half-duplex, 4 wire full duplex
Baud rate: 300~115200bps, auto test serial signal rate detect signal
speed automatically, zero delay time
Flow control: Data direction auto-turnaround, no flow control is
required
Transfer distance: RS-485/422 side: 1.8Km, 115200bps
RS-232 side: no less than 5m
Max number of drops: 128 nodes
Optical isolation: 2500V
Port protect: 600W surge protection, 15KV ESD protection
Power
Power input: 9VDC power input
Consumption: Static less than 120mA, dynamic less than 350mA
Environment
Operating temperature: -20°C to 60°C
Storage temperature: -25°C to 85°C
Humidity: 5% to 95%(no condensation)
Appearance
Dimensions: 93.0mm×62.4mm×22.0mm
Material: Iron (shell)
Color: White
Weight: 200g
Warranty: 3 years
Approvals: FCC, CE, RoHS approvals
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Applications
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1. RS232 to RS485 mode option(DB9):
Figure 1: Extending the RS232 data distance in RS485 mode
Figure 2: Master/Slave multi-drop configuration in RS485 mode
2. RS232 to RS422 mode option(DB9):
Figure 3: Extending the RS232 data distance in RS422 mode
Figure 4: Master/Slave multi-drop configuration in RS422 mode
Point to point communication, industrial gathering and disperse
distribution system, all kinds of remote control and measurement
system, POS, banking, insurance, stocking, canteen meal selling
system, transport billing system, all kinds of PLC, digital power
meter, gas meter.
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Troubleshooting instructions
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1. RS232 to RS485 mode option:
Perform a loop back test on a pair of Model485P converters. Using
figure 1, attach the two Model 485Ps to two serial ports on a PC and
using two instances of a HyperTerminal program send a character
from one and see if it echoes to the other. This will test both transmit
and receive functions of the converter in RS485 mode.
2. RS232 to RS422 mode option:
Perform a loop back test on one Model485P converter. Tie signals T+
to R+ and T- to R- of the Model485P. Attach the converter to the
serial port on a PC and using HyperTerminal send a character from
one and see if it echoes to the other. This will test both transmit and
receive functions of the converter in RS422 mode.
Certifications:
