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0.25 LBS

Product Description

Model: XP485-25EI


This product no longer available for purchase. This page will be maintained for reference only.

RS232 to RS485 optical isolated auto enabled converter with DB25 connector and DTE/DCE selection feature.


1000 volt isolation
DTE/DCE selectable,no null modems needed.
Auto enabled no drivers required no dip switches.
Status LEDs for PWR TX and RX lets you see whats happening.
-40°C to +85°C industrial temperature range standard
Built in active termination jumper selectable.
Microprocessor controlled.
PROGRAMMABLE Feature allows communication with devices with a fast response time.

Two automatic RS-485 transmit enable modes:

Bit time calculated
Transmit turnaround is automatically controlled by calculating one byte idle time of the current baud rate.

Fixed baud rate
Transmit turnaround is automatically controlled to near zero turnaround time for a set of fixed baud rates ranging from 1200 to 115,200 baud.
See the Users Manual pages 6 and 7 for more details.



Specifications - XP485-25EI

Temperature Range -40 to +85° C
RS-232 Connection DB25 female
RS-485 Connection 5 position 3.5mm spaced terminal block
one twisted pair wiring A/B signals
Distance 4000 feet
Isolation 1000V Optical Isolation
Speed 600BPS to 115200 BPS
PC Comport Flow Control Settings None required Auto Enabled
Automatic Signal Settings Bit time calculated
Fixed baud rate
Modes software selectable.
Auto Enabled Turnaround Bit time calculated
Transmit to receive turn-around is one byte time at current baud rate
Fixed baud rate
Transmit to receive turn-around near zero for the selected baud rate. See manual for more details.
Protection Reverse ppolarity diode protection
ZNR MOV and TransZorbs® on RS485 data lines
Reverse polarity diode protection
Nodes 255 nodes on a single twisted pair
Linear Technologies LTC1487
DTE/DCE Jumper selectable DTE (default) or DCE.
Termination On board jumper pin control provided
Status LEDs Yellow power indicator
Red transmit 232 to 485
Green receive from 485 to 232
Power Requirements 7.5VDC to 24VDC
22 ma nominal (250 ma dead short)
Power Supply External power supply required.
Power can be connected to terminal block, or convenient power jack.
Our PS9JS or PS9J power supply may be used.
Electronic Documentation

Users Manual

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