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Programmable Relay ● User Manual for ELC and PR Series 11 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com
2. General Introduction to xLogic
2.1. Overview
xLogic is a universal logic module made by Rievtech.
xLogic is a compact, expandable CPU that can replace mini
PLC, multiple timers, relays and counters. Bridging the gap
between a timing relay and a low-end PLC. Each CPU has a
real-time clock and calendar and supports optional expansion
I/O modules to meet your control and monitoring applications
needs. Data adjustments can be done via the onboard keypad
and LCD display, or with xLogicsoft. It can be either DIN-rail
or panel mounted, depending upon the needs of your
application, and it is available in 120/240 VAC as well as 12/24
VDC versions, and it is an ideal solution for relay replacement
applications, simple control applications such as building and
parking lot lighting, managing automatic lighting, access
control, watering systems, pump control, or ventilation
systems in factory, and home automation and applications in
which cost is a primary design issue.
2.2. Feature Highlights
4-lines, 16-characters per line, backlight display.
Multiple value display and input via keypad and LCD
display.
70 kinds of function Blocks can be used in a circuit
program in maximum
Standard Modbus RTU/ASCII/TCP communication
protocol supported.
It’s optional for xLogic to act as a slave or master in a
Modbus communication network.
Easily connect to other factory devices such as touch
screens by RS232 cable and/or RS485 module.
CAN BUS protocol-based expansion modules (PR-
18/PR-24 series CPU)
Expandable up to 16 linked IO expansion modules
reaching 282 I/O points in maximum
Optional RS232, RS485 and Ethernet connectivity
Multiple channels analogue inputs available with 0-10
VDC, PT100 & 0/4….20mA.
Default Real Time Clock (RTC) and Summer/Winter timer
available
Real Time Clock (RTC) at 25 °C kept for 20 days
4 channels high-speed counting
Pre-configured standard functions, e.g. on/ off-delays,
pulse relay and softkey
2 PWM channels (10kHz maximum)
Retentive memory capability (Not applicable to PR-6 &
PR-12-E series CPU)
Isolated RS232 and USB programming cables
Program capability up to
1024 function blocks for PR-18, PR-24, PR-12-N,
PR-18-N & PR-26-N
512 function blocks for PR-12 & ELC-12-N
64 function blocks for PR-6 & PR-12-E
Mounting via modular 35mm DIN rail or screw fixed
mounting plate
On-line monitor capability (Free SCADA software for all
series xLogic)
Datalogging
A range of analogue signals available (0 to 10 VDC, 0/4
to 20 mA and PT100 probe inputs and 0 to10VDC and
0/4 to 20mA outputs)
Low cost
2.3. Some of the things xLogic can do
for you
The xLogic Micro PLC provides solutions for commercial,
industrial, building and domestic applications such as lighting,
pumping, ventilation, shutter operations or in switching
cabinets. The possible uses are diverse, and these are just a
few possibilities.
Using the RS485 bus and Ethernet connectivity allows the
user to realize various extensive (real-time) monitoring and
control applications.
Special versions, without operator LCD and display unit, are
available for series production applications in a small machine,
installation and cabinet building environments to further slash
cost.
2.4. xLogic Devices
xLogic Basic is available in two voltage ranges.
*DC Range: 12-24 VDC i.e.: PR-6DC, PR-12DC, PR-14DC,
PR-18 and PR-24DC series.
*AC Range: 110-240 VAC i.e.: PR-6AC, PR-12AC, PR-14AC,
PR-18AC and PR-24AC series.
*With LCD Display: “-HMI” model, such as PR-12DC-DA-R-
HMI
*Without LCD Display: PR-6 series and with “-E” model, such
as PR-12DC-DA-R-E.
PR-18 and PR-24 all have LCD display.
Expansion modules:
PR-E (for use with PR-14, ELC-22-N, PR-18, PR-24 and all
PR-Ethernet CPUs)