Seneca R-KEY-LT User manual

INSTRUCTIONS IN ENGLISH LANGUAGE
INSTALLATION
MANUAL
R-KEY-LT
1
-
Port
ModBUS
RTU/ASCII
Industrial
Gateway
SENECA S.r.l.
Via Austria, 26 – 35127 – PADOVA (PD) - ITALY
Tel. [phone] Fax [phone]
www.seneca.it

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SENECA
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WARNINGS
The full content of this manual must be read before performing
any operation.
The module must only be used by qualified electricians. Specific
documentation is available from www.seneca.it
The module must be repaired and damaged parts replaced by the
Manufacturer. The product is sensitive to electrostatic discharges.
Take appropriate measures during anyoperation.
The warranty is null and void in the event the module or devices
supplied bytheManufacturer, necessaryfor its correct operation, are
improperly used or tampered with and, in anycase, if the instructions
contained in this manualwere not followed.
Electrical and electronic waste disposal (applicable in the European
Union and other countries with recycling).
The symbol on the product or its packaging shows the product must
be surrendered toa collection centre authorized to recycle electrical
and electronic waste.
This document is the property of SENECA srl. Unauthorized duplication and reproduction is
strictly forbidden. The content of this document corresponds to the described products and
technologies. Stated datamaybemodifiedor supplemented fortechnicaland/orsales purposes.
K-KEY-LT DESCRIPTION
R-KEY-LT is a sturdyand compact ModBUS gatewayconverting from theTCP-IP ModBUS
protocol to a ModBUS RTU/ASCII and vice-versa. It supports up to 8 ModBUS TCP-IP
clients at the same time, with a maximum of 10 ModBUS TCP-IP servers. With this model,
ModBUS slave serial devices can be integrated in an existing ModBUS TCP-IP network,
and ModBUS TCP-IP server devices can be made accessible to serial masters. It is fitted
with Vac/Vdc supply on the hardware itself, 1.5 kVac isolation and a wide temperature
range. R-KEY-LT canbesupplied also via a 230 Vac mains power supply. The product can
be configured via web server.

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MODULE LAYOUT
Dimensions
(LxHxD)
53
x
110
x
32
mm
Weight
80
g
Case
Self
-
extinguishing
PC/ABS
UL94
-
V0
Grey RAL 7035
SIGNALS VIA LED ON FRONT PANEL
LED Status LED meaning
PWR (Green) ON The device is powered with assigned IP
PWR (Green) Flashing Non-assigned IP
TX (Red) Flashing Data transmission on port RS232/RS485
RX (Red) Flashing Data receipt on port RS232/RS485
Ethernet ACT (Green) ON No activity on Ethernet port
Ethernet ACT (Green) Flashing Data transfer on Ethernet port
Ethernet LNK (Yellow) ON Ethernet port connected
Ethernet LNK (Yellow) OFF No Ethernet connection

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POSSIBLE CONFIGURATIONS
From Ethernet ModBUS to serial
From serialModBUS to Ethernet
R-KEY-LT can be fully set up via integrated web server. The programming and/or configuration
tools of the product, as well as all the manuals, can be downloaded from
www.seneca.it/products/r-key-lite.
SETTINGS
First start-up
IP address
configuration
On first start-up, the IP address isallocated bytheDHCP server of
the LAN network.
The selectors of DIP-switch-SW2 are set to OFF by default (*)
If a DHCP server is not available in your network,
(5 minutes after start-up) R-KEY-LT will be initialized with the
default IP address 169.254.x.y, where the valuesx and y are the
last two figures of the MAC address (see label onthe side of the
product).
N.B. With the SDD (SENECA Discovery Device) Windows PC
software that can be downloaded free of charge from
www.seneca.it/products/sdd, it is possible to identify the device in
the network and view/modify the IP address with just a few clicks
(see user manualfor all the details).
Web Server
To access the configuration Web server, just write the IP address
of the product in your navigation browser and access with the
following credentials:
User: admin; Password: admin
SW1 DIP-switch
With DIP-switch-SW1 it is possible to set the polarization of the
bus for port RS485. (*)
To polarize the bus on RS485, both SW1
DIP-switch selectors must be set to ON
ON ON
NOT to polarize the bus on RS485, both
SW1 DIP-switch selectors must be set to
OFF
OFF OFF

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SETTINGS
SW2 DIP-switch
Via DIP-switch-SW2 it is possible to set the IP configuration of the
device (*):
To obtain the configuration from the Flash
memory, both selectors of the SW" DIP
switch must be set to OFF
OFF OFF
To reset the device and revert to the factory
settings, both SW2 DIP switch selectors
must be set toON
ON ON
To force the IP address of the device to the
standard value of the SENECA ethernet
products: 192.168.90.101
OFF ON
Reserved
ON OFF
(*) ATTENTION: the DIP-switch settings are read only during the boot
phase. Restart after every change.
OMEGA
IEC
EN
60715
GUIDE
INSTALLATION
AND
REMOVAL
Installation on DIN rail
Installation: Position the device on the
OMEGA rail, resting the top teeth from
top to bottom.
Push the bottom part towards the rail till
the locking system engages.
Removal: Switch the module off; using
a slotted screwdriver, release the
locking system.
INSTALLATION
AND
REMOVAL
FOR
WALL
MOUNTING
Wall mounting
Installation: The device is provided
withaholeforwall-mounting. Follow the
image on the side after preparing wall
block and relative screw.
Removal: Switch the module off; push
lightly upwards and get the product
away from the wall.

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TECHNICAL SPECIFICATIONS
POWER SUPPLY
Voltage
Absorption
10 – 40 Vdc; 19 – 28 Vac 50 – 60 Hz
Max: 1 W
CPU ARM 32 bit
OPERATING SYSTEM Realtime multitasking
INSULATION
OPERATING MODES Gateway from Ethernet ModBUS to serial Gatewayfrom serialModBUS to Ethernet
Traffic monitor function via webserver
COMMUNICATION PORTS
1 switchable RS232 or RS485
on removable terminal (1-7)
Maximum Baud rate 115k,
ModBUS RTU ASCII Master / ModBUS RTU ASCII
Slave protocol
1 Ethernet on RJ45 10/100 Mbit, max distance 100 m with auto switch for
ModBUS TCP-IP.
CONNECTIONS
7-way removable screw terminals, 5mm pitch (*)
2-way removable screw terminals, 5mm pitch (*)
RJ45 Ethernet connector on the bottom
(*) with 2.5mm² max cable section
CONFIGURATION Configuration and FW update via webserver;
DIP-switches
MOUNTING DIN rail bar IEC EN 60715 or wallmounting
AMBIENT CONDITIONS
Operating temperature
Humidity
Altitude
Storage temperature
Protection rating
-20°C – +70°C
30 – 90% non condensing
up to 2.000 m above sea level
-20°C – +85°C
IP20
STANDARDS
EN61000-6-4 (electromagnetic emission, industrial
environment)
EN61000-6-2 (electromagnetic immunity, industrial
environment)
EN61010-1 (safety).

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ELECTRICAL
CONNECTIONS
Terminal for RS232 or RS485 switchable
serial port
To use COM RS485
The connections oftheterminal are 1-
2-3, A(+), B(-)and GND respectively.
N.B. The indication of the RS485
connection polarity(terminals 1 and 2) is
not standardised and in some devices
maybe inverted.
To use COM RS232
The connections oftheterminal are 3-
4-5-6-7, GND, RTS, Tx, CTS and Rx
respectively.
The picture on the side, reproduced
partly on the product, shows the key of
the contacts.
N.B. see the paragraph SETTINGS on
page 4 in case of communication
problems.
Power supply
Electrical power connections are
available from terminals 8 and 9.
The power supply voltage must remain
in the range of either 10 and 40Vdc (any
polarity), or 19 and 28Vac.
The upper limits must not be
exceeded in order to avoid serious
damage to the module.
The power supply source must be
protected from any module malfunctions
using appropriately-sized safety fuses.

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ELECTRICAL
CONNECTIONS
Reboot button
The button is positioned between the
SW2 DIP-switch and the Ethernet
socket. To reboot the device, just press
the button and do not release it for 5
seconds. Release it when all the LEDs
are lit.
RJ45 Ethernet ports
The R-KEY-LT has an Ethernet 10/100
port with RJ45 connector in the lower
part of the module.
ACCESSORIES
Code
Description
CE-RJ45-RJ45-R 1,5 m long RJ45-RJ45 Ethernet cable
ALIM-MY2 230 V / 12V power supply(optional)
CONTACTS
Technical support [e-mail]
Product information: [e-mail]
For further information, referto the USERMANUAL that can bedownloaded freeof chargefrom
www.seneca.it/products/r-key-lite.