Measurement PPIO-AI08 User Manual

PointScan/200 Series

User’s Manual

RS485 Distributed I/O

the smart approach to instrumentation

™

IOtech, Inc.

25971 Cannon Road

Cleveland, OH 44146-1833

Phone: [phone]

Fax: [phone]

E-mail (sales): [e-mail]

E-mail (post-sales): [e-mail]

Internet: www.iotech.com

PointScan/200 Series

User’s Manual

RS 485 Distributed I/O

p/n

1085-0902

Rev.

1.0

© 2001 by IOtech, Inc. September 2001 Printed in the United States of America

Warranty Information

Your IOtech warranty is as stated on the product warranty card. You may contact IOtech by phone,
fax machine, or e-mail in regard to warranty-related issues.

Phone: [phone], fax: [phone], e-mail: [e-mail]

Limitation of Liability

IOtech, Inc. cannot be held liable for any damages resulting from the use or misuse of this product.

Copyright, Trademark, and Licensing Notice

All IOtech documentation, software, and hardware are copyright with all rights reserved. No part of this product may be
copied, reproduced or transmitted by any mechanical, photographic, electronic, or other method without IOtech’s prior written
consent. IOtech product names are trademarked; other product names, as applicable, are trademarks of their respective
holders. All supplied IOtech software (including miscellaneous support files, drivers, and sample programs) may only be used
on one installation. You may make archival backup copies.

FCC Statement

IOtech devices emit radio frequency energy in levels compliant with Federal Communications Commission rules (Part 15)
for Class A devices. If necessary, refer to the FCC booklet How To Identify and Resolve Radio-TV Interference Problems
(stock # 004-000-00345-4) which is available from the U.S. Government Printing Office, Washington, D.C. 20402.

CE Notice

Many IOtech products carry the CE marker indicating they comply with the safety and emissions standards of the
European Community. As applicable, we ship these products with a Declaration of Conformity stating which
specifications and operating conditions apply.

Warnings, Cautions, Notes, and Tips

Refer all service to qualified personnel. This caution symbol warns of possible personal injury or equipment damage
under noted conditions. Follow all safety standards of professional practice and the recommendations in this manual.
Using this equipment in ways other than described in this manual can present serious safety hazards or cause equipment
damage.

This warning symbol is used in this manual or on the equipment to warn of possible injury or death from electrical
shock under noted conditions.

This ESD caution symbol urges proper handling of equipment or components sensitive to damage from electrostatic
discharge. Proper handling guidelines include the use of grounded anti-static mats and wrist straps, ESD-protective
bags and cartons, and related procedures.

Specifications and Calibration

Specifications are subject to change without notice. Significant changes will be addressed in an addendum or revision to the
manual. As applicable, IOtech calibrates its hardware to published specifications. Periodic hardware calibration is not
covered under the warranty and must be performed by qualified personnel as specified in this manual. Improper calibration
procedures may void the warranty.

Quality Notice

IOtech has maintained ISO 9001 certification since 1996. Prior to shipment, we thoroughly test our products and
review our documentation to assure the highest quality in all aspects. In a spirit of continuous improvement, IOtech
welcomes your suggestions.

INSTALLATION AND HAZARDOUS AREA WARNINGS

These products should not be used to replace proper safety interlocking. No software-based device (or any
other solid-state device) should ever be designed to be responsible for the maintenance of consequential
equipment or personnel safety. In particular, IOtech disclaims any responsibility for damages, either direct
or consequential, that result from the use of this equipment in any application.

All power, input and output (I/O) wiring must be in accordance with Class I, Division 2 wiring methods and
in accordance with the authority having jurisdiction.

WARNING – EXPLOSION HAZARD – SUBSTITUTION OF COMPONENTS MAY IMPAIR
SUITABILITY FOR CLASS 1, DIVISION 2.

WARNING – EXPLOSION HAZARD – WHEN IN HAZARDOUS LOCATIONS, DISCONNECT
POWER BEFORE REPLACING OR WIRING MODULES.

WARNING – EXPLOSION HAZARD – DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS
BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE NONHAZARDOUS.

Note: Refer to the IO Toolkit software’s online help for detailed product specifications and
configuration settings.

Table of Contents

1 - General Information

Overview …… 1-1
General Specifications …… 1-1
I/O Module Components …… 1-2
DC Power Overview …… 1-2

DC Power Wiring PointScan/443 …… 1-3
DC Power Wiring (User Source) …… 1-3
Current Requirements …… 1-3

PointScan/200 LEDs …… 1-3

I/O Module Status LED …… 1-3
Status LED Wink Feature ……1-3

Isolation ……1-4
Local Diagnostics …… 1-4
Hot Swap Feature …… 1-4
Calibration …… 1-5
Getting Started …… 1-6

n

Mount the Hardware …… 1-6

o

Install Ethernet/RS485 Wiring Between

Modules …… 1-6

p

Connect Power and I/O Wiring to the

Modules …… 1-6

q

Install Communication Cabling …… 1-6

r

Apply Power …… 1-6

s

Configure Using IO Toolkit …… 1-6

t

Test the System …… 1-6

u

Configure Your Computer …… 1-6

v

Run the Software

w

If You Have Difficulty …… 1-6

2 - RS485 Wiring Guidelines

RS485 Wiring Guidelines …… 2-1

PointScan/441 RS232 to RS485 Four Port

Connector …… 2-1

Overview …… 2-1

RS232 Wiring …… 2-1
RS485 Wiring …… 2-1
Screw Torque …… 2-2
PointScan/200 Series Panel Assembly …… 2-3
Dimension Drawings …… 2-4

3 - Configuration Tools

PointScan/440

Configuration Tool

Operation …… 3-1
Wiring …… 3-1
RS232 Mode …… 3-1
Alternative Setup Method …… 3-1
IO Toolkit …… 3-1

Portable Remote I/O Field

…… 3-1

4 - Discrete Input Modules

PointScan/221

with Direct Field Wiring Base

PointScan/221

with Isolated Inputs

Overview …… 4-1
Standard Wiring …… 4-1
Optional Wiring …… 4-1
I/O Registers …… 4-1

PointScan/222

Module

…… 4-3

Overview …… 4-3
Wiring …… 4-3
I/O Registers …… 4-3

8 Discrete Inputs / Counters

8 Discrete Inputs / Counters

…… 4-1

High Density Discrete Input

5 - Discrete Output Modules

PointScan/243

Module

……
Overview …… 5-1
Wiring …… 5-1
I/O Registers …… 5-1
TPO Feature …… 5-1

PointScan/242

Module

……
Overview …… 5-2
Wiring …… 5-2
I/O Registers …… 5-2

8 Channel High Output Current

5-1

High Density Discrete Output

5-2

6 - Analog Input Modules

PointScan/201

……

Inputs

Overview …… 6-1
Wiring …… 6-1
Current Shunts …… 6-1
I/O Registers …… 6-1

PointScan/202

Input Module

Overview …… 6-2
Wiring …… 6-2
Current Shunts …… 6-2
I/O Registers …… 6-2

PointScan/204

Module

…… 6-3

Overview …… 6-3
Wiring …… 6-3
Current Shunts …… 6-3
I/O Registers …… 6-3

8 Channel 4-20 mA Analog

6-1

High Density 4-20 mA Analog

……6-2

Instrumentation Analog Input

…… 4-1

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5

7 - Analog Output Modules

PointScan/217

Output Module

PointScan/216

Output Module

Overview …… 7-1 Wiring …… 7-1 I/O Registers …… 7-1

8 Channel 4-20 mA Analog

…… 7-1

4 Channel 4-20 mA Analog

…… 7-1

8 - Combination I/O Modules

PointScan/228

Output Module

Overview …… 8-1
Wiring …… 8-1
I/O Registers …… 8-2

PointScan/231

Analog Input Module

Overview …… 8-2
Wiring …… 8-3
Current Shunts …… 8-3
I/O Registers …… 8-3

Combined Discrete Input and

…… 8-1

Combined Discrete Input and

…… 8-2

Appendix A – Table of PointScan I/O

Modules and Accessories

vi Analog Output Modules

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PointScan/200 User’s Manual

General Information 1

Overview

This manual will help you install and maintain PointScan/200. In summary, wiring for power,
communications and I/O is connected to each module’s base. Then, setup choices are entered using the
IO Toolkit and the system is ready to run.

General Specifications

These general specifications apply to all PointScan/200 modules.

Supply Voltage 9 - 30 VDC, 0.5 Watt typical per module

Modules per RS485 bus 32 (use a PointScan/441 to drive a total of 128 modules)
RS485 Isolation 1200 Volts RMS (for 1 minute)
Operating Temperature
Storage Temperature
Humidity 5 to 95% (non-condensing)

PointScan/200 User’s Manual

(25 mA @ 24 VDC – varies by module and load).

-30 to 70 °C

-40 to 85 °C

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General Information 1-1

I/O Module Components

A PointScan/200 Series I/O module consists of a base assembly and a removable logic module. All base
assemblies have a hinged door that is accessible when the logic module is removed. In 4-20 mA analog
input modules (PointScan/201, /202, /204, and /231) the hinged door provides access to jumpers and/or 100
ohm replaceable shunts.

A logic module may be removed by lightly squeezing the top and bottom locking tabs and pulling the logic
module straight out. To reinstall, insert the logic module into the base and press firmly until it snaps into
place. The logic module is fully seated when the innermost row of ventilation slots are just covered by the
top surface of the base cover.

DC Power Overview

PointScan/200 modules can be powered from the same DC source that is used to power your I/O devices.
No separate power supply is required. Typically, 10 to 30 VDC power is applied to terminals 17 and 18 on
the base of each module. Some PointScan/200 Series modules distribute power or return connections to
I/O terminals for your convenience in making field-wiring connections. Refer to the wiring diagram for
each module for more information.

The PointScan/443 is used to power up to seven PointScan modules of any type, instrumentation loops, and
other devices. It operates on 85-264 VAC (47-63 Hz) or 120-370 VDC and outputs 24 VDC at up to 1 A.
Refer to the figure below for the proper power connections.

1-2 General Information

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PointScan/200 User’s Manual

DC Power Wiring PointScan/443

PointScan/442 gateways, and user instrumentation loops may be powered from the PointScan/443 power
supply. The PointScan/443 supplies 24 volts DC at a maximum of two amps.

DC Power Wiring (User DC Source)

PointScan/442 gateways, and user instrumentation loops may be powered from a single DC source. The
user DC power source must be between 18 to 30 volts.

Current Requirements

To calculate the current requirements, add the wattage required for the PointScan/200 Series modules in
use, then divide the total wattage by the DC power source voltage. Then add any current needed for user
instrumentation loops.

PointScan/200 LEDs

Every PointScan/200 module has a number of LEDs. These LEDs can be useful for system diagnostics.
These LEDs can be observed in the following states:

I/O Module Status LED

On, with a quick “OFF” BLINK [Long Blink](1.9 seconds ON, .1 seconds OFF) - The module is
configured and fully operational, but has not received a valid request from the host for a time longer than
the specified time out period. A communication time out has occurred.

Full ON [On] - The module is configured, fully operational, and has received communication from the host
device before the timeout period expired. This is the desired LED indication during system operation.

HALF BLINK [Long Blink] (1 second ON, 1 second OFF) - The module is not adequately configured and
requires a download from the IO Toolkit program.

Full OFF [Off] - There is no power to the module, or the status LED is being turned off intentionally by
the IO Toolkit during the module loading operation.

Off, with a quick “ON” BLINK [Short Blink] (1.9 seconds OFF, .1 seconds ON ) - The module failed
self-test at initialization. It will not attempt communication and should be replaced.

Status LED Wink Feature

The “Status” LED may be intentionally winked (10 blinks/second) by the IO Toolkit program to visually
identify the module when other modules are present.

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General Information 1-3

Isolation

Every PointScan/200 Series I/O module is isolated from ground (1200 Vrms 1 minute) and additional
modules for fault-free operation. Additional levels of isolation (e.g. 500V channel to channel isolation)are
provided with some modules. Refer to the product specifications in the IO Toolkit online help system for
more information.

Local Diagnostics

Local diagnostics can be performed through any available port while the gateway is responding to
messages from the other port. Diagnostic software, such as IO Toolkit, can be used to display the status of
the I/O registers.

Hot Swap Feature

I/O modules may be unplugged from their bases, even in live systems. PointScan/100 Series I/O modules
automatically self-configure from system memory. Analog I/O logic modules will automatically upload
and self-adjust to user calibration settings (if any are present) from the module base.

1-4 General Information

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PointScan/200 User’s Manual

Calibration

All PointScan/200 Series analog I/O logic modules are factory calibrated over all supported ranges using a
regularly maintained set of standards. Factory calibration data is stored in permanent memory in the logic
module, and cannot be altered. User recalibration may be performed, but is necessary only if inaccuracy in
your field device is observed, or if any of the 100 ohm input shunts are replaced with low tolerance
resistors.

Each analog channel has span and offset calibration settings. Span is the "range" or "gain" of the channel.
Offset is the "zero" setting. Each reported analog I/O value is the product of the factory calibration value
times the user calibration value. The user calibration value is defined as:

(user span value * raw value) + user offset

The user span is a unity value (1) by default. The user offset is zero by default.

Note: All factory and user calibrations are performed in software. There are no adjustment
potentiometers inside the logic modules.

User calibrations are performed using the Remote IO Toolkit utility. Refer to the Remote IO Toolkit on­line help system for information on calibrating PointScan/200 Series analog I/O.

Communicating with PointScan/200

Protocols supported Modbus, ASCII/RTU, and proprietary
Wiring configuration RS485 two-wire partyline
RS485 isolation (module to module) 1200 Volts RMS 1 minute
Supported baud rates 2400, 4800, 9600, 14400, 19200, 38400, 57600 baud
Factory communications settings 9600 baud, no parity, 8 data bits
Cable recommendation Shielded, twisted pair with drain wire desirable. Data rated

cable is recommended for greater distances.

Limitations: cable up to 1 km 24 AWG and 57,600 baud

cable up to 2 km 20 AWG and 38,400 baud

cable up to 3.5 km 18 AWG and 19,200 baud
Number of modules on one RS485 port 32 maximum
Number of addressable modules 128 with PointScan/441

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General Information 1-5