Using Modbus Touch Screen PLCs w Remote I/O Modules

Using Modbus Touch Screen PLCs with
Remote I/O Modules
Maria Lemone, Sales Manager
ICP DAS USA, Inc.
mariaL@icpdas-usa.com
1-310-517-9888 x105
Making Data Acquisition Easy
Modbus Touch Screen PLC’s & I/O | Maria Lemone | 2016
Robert Murao, Tech Support Engr
ICP DAS USA, Inc.
robertm@icpdas-usa.com
1-310-517-9888 x111
www.icpdas-usa.com
www.icpdas-usa.com 1-310-517-9888 ext 105

Using Modbus Touch Screen PLC’s with Remote I/O
Introduction
Product & Technology Overview
• Modbus RTU and Modbus TCP Protocols
• Data Acquisition & Data Logging Technology
• Touch Screen PLC’s & Development Environment
• Ladder Logic & C Language Programming
Live Demonstration
Modbus Touch Screen PLC’s & I/O | Maria Lemone | 2016www.icpdas-usa.com 1-310-517-9888 ext 105

ICP DAS USA
• Products are used Worldwide
• ICP DAS established in 1993, ICP DAS USA in 2001
• Manufacture our Products in Taiwan
• RoHS Compliant, ISO-9001:2008

Background on Modbus
• Modbus is a Serial Based Communications Protocol
• Industrial communications for instrumentation,
control and data acquisition devices
• Originally published by Modicon (now Schneider
Electric) in 1979 for use with its Programmable
Logic Controllers

Data Acquisition
Data acquisition (abbreviated DAQ) is the process
of sampling of real world physical conditions and
conversion of the resulting samples into digital
numeric values that can be manipulated by a
computer.
Temp.
Digital
Output

Digital vs Analog
Digital Inputs: Detects if a voltage is above
or below a specific threshold.
Digital Outputs: Controls a voltage with a
computer or controller
Analog Inputs: Variable voltage, current,
temperature or pressure measurements
Analog Outputs: Variable voltage or current
electrical signals

Modbus RTU Data Acquisition
• Up to 255 Devices in One Network
• Developed with Industrial Applications in Mind
• Openly Published and Royalty-Free
• Easy to Deploy and Maintain
• Communicates up to 4000 Feet without a Repeater

Modbus Function Codes
Read Write Reset
Multiple
Outputs
Report
Slave
ID

Modbus Registers
Analog Output Value
Analog Output Read Back
Safe Output Value
Power On Output Value
Watchdog Timeout
Watchdog Timeout
Reset Status

Use RS-485
based DCON &
Modbus RTU
protocols
Labview,
DasyLab, DDE,
dll, OPC and OCX
drivers
Communicates to
PLC, DCS, PC or
many other
controllers
70 + selections of
analog, digital,
and I/O specialty
modules
Auto tunes data
rate and data
format
tM-TH8
Modbus Touch Screen PLC’s & I/O | Maria Lemone | 2016
Modbus RTU I/O Solutions: M-7000 & tM Series
www.icpdas-usa.com 1-310-517-9888 ext 105

Using Modbus RTU DAQ
• Link the M-7000 and host
PC with I-7561 Serial to
USB or tDS-715 Serial to
Ethernet Converter
• Click the Search on DCON
Utility main menu to scan
for devices on the RS-485
network

Power&Data
Modbus TCP
Ethernet
Ethernet / Modbus TCP
Modbus TCP Ethernet I/O Solutions
Ethernet
Modbus TCP
Ethernet
Modbus TCP
tPET-A4
ET-7255
Power & Data
PET-7060 or WISE-7167
ET-7217
ET-7215
tET-C4
Ethernet
ModbusTCP
Ethernet / Modbus TCP
Modbus TCP protocol
Digital, Relay, Current, Voltage, RTD,
Thermistor, Thermocouple I/O
Works with PC, PLC, DCS, TouchPads and
many other Controllers
NS-205PSE

Using Modbus TCP DAQ
• Link the ET-7000 and
host PC
• Click the Search on
MiniOS7 Utility’s main
menu to scan for devices
on the Ethernet network

Connect by Web Browser
• Enter in
Configured IP
Address
• Input User Name
& Password
• Web HMI allows
you to configure
the ET-7017

MicroTouch Annunciator System
Nurse Call
Alarms
Door Alarm
Display
Emergency
Call
Systems
www.icpdas-usa.com 1-310-517-9888 ext 105 Modbus Touch Screen PLC’s & I/O | Maria Lemone | 2016

WF-2000 Series
Wireless Modbus Data Acquisition
Zigbee Modbus
RTU
Wi-Fi
Modbus
TCP

Zigbee Wireless Network
Flexible Topologies
Cluster Tree
Star
Mesh
Coordinator establishes
communication Path
Slaves are Repeaters

Zigbee Wireless I/O in Factory Automation
Counters
Conveyor Control
Weight
Temperature Monitoring

Modbus TCP vs Modbus RTU
• Modbus TCP is over Ethernet networks
• Modbus RTU is over Serial networks
• Networks are Not the Same
• Can use a Modbus RTU to Modbus TCP Gateway like tGW-715
to Combine Networks
Modbus
Gateway

Data Logging Technology
• Data Logging: The process of
using a computer to collect
data through sensors, analyze
the data and save and output
the results of the collection
and analysis.
• Data logs in remote locations
can be retrieved in different
ways like via FTP and email.

Free EZ Data Logger Software
Trends
Gauges
Bar
Graphs
Layout
Supports
DCON,
Modbus
RTU, &
Modbus TCP
Protocols
Trending
Information
Data Logging Display Data
Supports VB
Script

WF-2000 Series
Modbus Touch Screen PLC’s
2.8”
3.5”
4.3”
7.3”
2.8, 3.5, 4.3, 7.3”
Free Development Environment
C Language & Ladder Logic
Programmable
PoE Options
Demo Programs
Keypad Remotes

Touch Screen PLC’s

Mounting

HMIWorks Development Environment

Drag & Drop Design

Ladder Logic
• Basis of most control functions
• Logical functions: AND, OR, and exclusive OR
(XOR)
• Logic functions are implemented by developing
a ladder diagram.
• Function Blocks

Types of Variables

Contact

Ladder Rungs & Rails

Jump, Label, Return

Programming with Ladder Logic
• New Project > Ladder
Programming Type >
Add New Virtual Tag
• Pointer
• F2: Left Contact
• F3: Right Contact
• F4: Parallel Contact
• F5: Coil
• F6: Left Function Block
• F7: Right Function Block
• F8: Parallel FB
• Jump

C Language
• Flexible & Portable
• Functions & Recursion
• Libraries (Including Math)
• Case Statements
• Condition Statements
• For and While Loops
• Data Structures
• Variables

Operators
• Arithmetic: +, -, *, /, %
• Relational: >, >=, <, <=
• Equality: ==, !=
• Logical: && (and), || (or
• Increment and Decrement: ++, --
Example:
if (x !=y) && (c==b)
{
a=c + d*b;
a++;
}

Loop Statements
• While (condition) {statements}
While a condition is true, execute
statements
• For (initialization; condition;
increment) {statements}
If true, execute statements
increment and repeat until not true
Examples:
while(1); // loop forever
for (i=0; i<3; i++)
{
printf(“hello world”);
}
//print hello world 3 times

If and Switch Statements
• If (condition1)
{statements1}
else if (condition2)
{statements2}
else
{statementsn}
• Switch (expression){
case 1: statements
case 2: statements
default: statements
}

ICP DAS USA Benefits
• Customized Products & OEM Capability
• Low lead times, cost effective design solutions, and
personalized care
• Competitive price/performance ratio, while offering
the latest solutions for current industrial trends.
• We are able to provide hardware and software
solutions
• ICP DAS USA provides a great variety of products with
modular and universal solutions for your applications
and projects.

Using Modbus Touch Screen PLCs w Remote I/O Modules

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