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P/N: 1802051501010
NPort P5250A Series Quick
Installation Guide
First Edition, August 2011
Overview
NPort P5250A series device servers are compact, palm-sized data
communication devices that allow you to control RS-232/422/485
serial devices over a TCP/IP-based Ethernet.
Note:
“-T” indicates an extended temperature model.
Package Checklist
Before installing the NPort P5250A series device server, verify that
the package contains the following items:
•
1 NPort P5250A serial device server
•
4 stick-on pads
•
Document & Software CD
•
Quick Installation Guide
•
Product Warranty Statement
Optional Accessory
•
DK-35A: DIN-Rail Mounting Kit (35 mm)
Notify your sales representative if any of the above items are
missing or damaged.
Hardware Introduction
As shown in the following figures, NPort P5250A series device
servers have one male DB9 port for transmitting RS-232/422/485
serial data.
Reset Button
—
Press and hold the Reset button for 5 seconds to
load factory defaults
: Use a pointed object, such as a straightened
paper clip or toothpick, to depress the reset button. This will cause
the Ready LED to blink on and off. Once the Ready LED stops
blinking (after about 5 seconds), release the reset button and the
device server will start to load the factory defaults.
WARNING
1. The equipment is designed for in-building
installation only and is not intended to be connected
to exposed (outside plant) networks.
2. This equipment is intended to be used in a
Restricted Access Location.
3. This product is intended to be supplied by an
UL60950-1 and IEC60950-1 certified Power Unit
marked “LPS” and rated output rating: 12 to 48 VDC,
0.18 A minimum, 75°C.
LED Indicators
—NPort P5250A’s top panel has three LED
indicators, which are described in the following table.
LED
Name
LED
Color
LED Function
Ready
Red
Steady on: Power is on and the NPort is booting
up.
Blinking: Indicates an IP conflict, or DHCP or
BOOTP server is not responding
properly.
Green
Steady on: Power is on and the NPort is
functioning normally.
Blinking: The NPort has been located by the
NPort Administrator’s Location
function.
Off Power is off, or a power error..
Link
Orange 10 Mbps Ethernet connection.
Green 100 Mbps Ethernet connection.
Off Ethernet cable is disconnected.
Tx/Rx Orange Serial port is receiving data.
Green Serial port is transmitting data.
Off
No data is being transmitted or received through
the serial port.
Adjustable pull high/low resistor and terminator for RS-485
Remove the NPort P5250A’s top cover
and you will find DIP switches to adjust
each serial port’s pull-high, pull-low,
and terminator.
Do not use the 1 KΩ
setting with RS-232 mode, as doing so
will degrade the RS-232 signals and
shorten the communications range.
SW
1
2
3
Pull-high resistor Pull-low resistor
Terminator
ON
1 K
Ω
1 K
Ω
120
Ω
OFF
*150 K
Ω
*150 K
Ω
*---
*Default
