OPTO 22 B3000-B User Manual

B3000-B SERIAL BRAIN

USER’S GUIDE

Form 1781-170202—February 2017

43044 Business Park Drive • Temecula • CA 92590-3614

Phone: 800-321-OPTO (6786) or 951-695-3000

Fax: 800-832-OPTO (6786) or 951-695-2712

www.opto22.com

Product Support Services

800-TEK-OPTO (835-6786) or 951-695-3080

Fax: [phone]

Email: [e-mail]

Web: support.opto22.com

B3000-B Serial Brain User’s Guide
Form 1781-170202—February 2017

Copyright © 1997–2017 Opto 22.
All rights reserved.
Printed in the United States of America.

The information in this manual has been checked carefully and is believed to be accurate; however, Opto 22 assumes no
responsibility for possible inaccuracies or omissions. Specifications are subject to change without notice.

Opto 22 warrants all of its products to be free from defects in material or workmanship for 30 months from the
manufacturing date code. This warranty is limited to the original cost of the unit only and does not cover installation, labor,
or any other contingent costs. Opto 22 I/O modules and solid-state relays with date codes of 1/96 or newer are guaranteed
for life. This lifetime warranty excludes reed relay, SNAP serial communication modules, SNAP PID modules, and modules
that contain mechanical contacts or switches. Opto 22 does not warrant any product, components, or parts not
manufactured by Opto 22; for these items, the warranty from the original manufacturer applies. Refer to Opto 22 form
1042 for complete warranty information.

Wired+Wireless controllers and brains are licensed under one or more of the following patents: U.S. Patent No(s). 5282222,
RE37802, 6963617; Canadian Patent No. 2064975; European Patent No. 1142245; French Patent No. 1142245; British Patent
No. 1142245; Japanese Patent No. 2002535925A; German Patent No. 60011224.

Opto 22 FactoryFloor, groov, Optomux, and Pamux are registered trademarks of Opto 22. Generation 4, groov Server,
ioControl, ioDisplay, ioManager, ioProject, ioUtilities, mistic, Nvio, Nvio.net Web Portal, OptoConnect, OptoControl,
OptoDataLink, OptoDisplay, OptoEMU, OptoEMU Sensor, OptoEMU Server, OptoOPCServer, OptoScript, OptoServer,
OptoTerminal, OptoUtilities, PAC Control, PAC Display, PAC Manager, PAC Project, PAC Project Basic, PAC Project Professional,
SNAP Ethernet I/O, SNAP I/O, SNAP OEM I/O, SNAP PAC System, SNAP Simple I/O, SNAP Ultimate I/O, and Wired+Wireless
are trademarks of Opto 22.

ActiveX, JScript, Microsoft, MS-DOS, VBScript, Visual Basic, Visual C++, Windows, and Windows Vista are either registered
trademarks or trademarks of Microsoft Corporation in the United States and other countries. Linux is a registered
trademark of Linus Torvalds. ARCNET is a registered trademark of Datapoint Corporation. Modbus is a registered trademark
of Schneider Electric, licensed to the Modbus Organization, Inc. Wiegand is a registered trademark of Sensor Engineering
Corporation. Allen-Bradley, CompactLogix, ControlLogix, MicroLogix, SLC, and RSLogix are either registered trademarks or
trademarks of Rockwell Automation. CIP and EtherNet/IP are trademarks of ODVA. Raspberry Pi is a trademark of the
Raspberry Pi Foundation.

groov includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit. (http://www.openssl.org)

All other brand or product names are trademarks or registered trademarks of their respective companies or organizations.

Opto 22
Automation Made Simple.

ii

B3000-B Serial Brain User’s Guide

Table of Contents

Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

About this Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

For Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Chapter 2: Configuration and Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Setting Up Serial Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Setting the Address and Communication Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Binary Mode with CRC16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

ASCII Mode with CRC16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Binary Mode with Checksum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

ASCII Mode with Checksum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Addressing I/O. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Digital and Analog I/O Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Chapter 3: Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Communication Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Wiring to a SNAP-PAC-S1 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Wiring to a SNAP-PAC-S2 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Wiring to a PCI-AC48 Adapter Card in a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Chapter 4: Maintenance and Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Maintaining the B3000-B Serial Brain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Loading New Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Resetting the Brain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

LED Indicators and STAT LED Blink Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Green . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Orange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Red and Green . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Troubleshooting a B3000-B Brain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Troubleshooting Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Making Sure the Brain is in Normal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

B3000-B Serial Brain User’s Guide iii

iii

iv

B3000-B Serial Brain User’s Guide

Chapter 1

1: Introduction

The B3000-B is a mistic serial brain designed as a
B3000 replacement that is compatible with
FactoryFloor controllers running OptoControl
strategies and SNAP B-series mounting racks. The
B3000-B has the same functionality as the B3000,
except that it does not support the Optomux protocol.
Customers requiring an Optomux brain should use
Opto 22’s E1 or E2 brain.

The B3000-B can be connected to a SNAP PAC
S-series controller, and it can be migrated with other
mistic I/O units to PAC Project. However, if you are
building a new SNAP PAC system with distributed I/O,
you should use SNAP-PAC-SB1 and SB2 serial brains
instead of the B3000-B.

For information on SNAP PAC SB-series brains, see
form 1690, the SNAP PAC Brains User’s Guide. For
information on the earlier B3000 serial brain, see form
0787, the SNAP Analog/Digital Mistic/Optomux Brain Data Sheet. For information on migrating to the
SNAP PAC System, see form 1688, the SNAP PAC System Migration Technical Note. All documents are
available on our website, www.opto22.com. The easiest way to find them is to search on the form
number.

About this Guide

This guide includes the following chapters show you how to configure and wire the B3000-B:

Chapter 1: Introduction—information about the guide and how to reach Opto 22 Product

Support.

Chapter 2: Configuration and Communication—quick-start steps to get B3000-B brains up and

running quickly.

Chapter 3: Wiring—recommended communication cables and wiring diagrams.

Chapter 4: Maintenance and Troubleshooting—resetting the brain to factory defaults,

upgrading firmware, blink codes, and other troubleshooting assistance.

B3000-B Serial Brain User’s Guide

1

1

FOR HELP

NOTE: Email messages and phone
calls to Opto 22 Product Support
are grouped together and
answered in the order received.

For Help

If you have problems installing or using SNAP PAC brains and cannot find the help you need in this
guide or on our website, contact Opto 22 Product Support.

Phone: 800-TEK-OPTO (800-835-6786

toll-free in the U.S. and Canada)
951-695-3080
Monday through Friday,
7 a.m. to 5 p.m. Pacific Time

Fax: [phone]

Email: [e-mail]

Opto 22 website: www.opto22.com

When calling for technical support, be prepared to provide the following information about your
system to the Product Support engineer:

• Software and version being used

• Brain and controller firmware version (as applicable)

• PC configuration (type of processor, speed, memory, and operating system)

• A complete description of your hardware and operating systems, including:

– loader and firmware versions for the brain, and date code
– for an Ethernet network, IP addresses and subnet masks for devices on the system
– for a serial network, addressing and communication parameters
– type of power supply
– third-party devices installed (for example, barcode readers)

• Specific error messages seen

2

B3000-B Serial Brain User’s Guide

2: Chapter 2

Serial port connector pinout

Pin 1

TX/RX+
TX/RX–

COM

RX+
RX–

IRQ+

IRQ–

2: Configuration and
Communication

This chapter describes the B3000-B serial port, how to set up serial networking, how to set the
address and communications options for the brain, and how the brain addresses the I/O.

Serial Port

Serial Port

Setting Up Serial Networking

Setting the Address and Communication Options

Addressing I/O

The communications port on a B3000-B is RS-485, either 2-wire or 4-wire. Baud rate, termination,
and address are set using the switches on the brain’s top cover. To configure the B3000-B, see the
next section, “Setting Up Serial Networking.”

For serial cable recommendations and wiring, see Chapter 3: Wiring.

Wiring of IRQ + and IRQ - (pins 6 and 7) is optional and is only needed when using mistic interrupts.

(below)

page 4

page 5

page 8

B3000-B Serial Brain User’s Guide

3

3

SETTING UP SERIAL NETWORKING

Baud rate
switch

Serial
connector

Termination
switches

Address upper

IRQ LED

Reset switch

TX/RX LED

STAT LED

B3000-B

Pin 1

Address lower

8

9

A

B

C

D

E

F

7

6

5

4

3

2

1

0

Baud Rate Switch

Baud rate

Switch

position

Baud rate

Switch

position

(Reserved) F 4800 bps 7

* 230400 bps E 2400 bps 6

115200 bps D 1200 bps 5

76800 bps C 600 bps 4

57600 bps B 300 bps 3

38400 bps A (Reserved) 2

19200 bps 9 (Reserved) 1

9600 bps 8 (Reserved) 0

* Older Opto 22 controllers do not support this setting. It
is supported by SNAP PAC S1’s and S2’s.

Setting Up Serial Networking

The B3000-B brain can be connected to a
SNAP PAC S-series or mistic controller, or to
a PC equipped with an Opto 22 PCI-AC48
adapter card, which provides an
RS-485 port.

Follow these steps to set up serial
networking:

1.

Attach an RS-485 serial cable to the
serial port. (See Chapter 3: Wiring for
cable recommendations).

2.

Follow the wiring diagrams beginning
on page 12 for the serial network.

3.

Rotate the baud rate switch to set the
desired baud rate, as follows:

4

B3000-B Serial Brain User’s Guide

NOTE: Due to timing tolerances, some baud rates may not work with some compatible devices.

CHAPTER 2: CONFIGURATION AND COMMUNICATION

ON

End of cable:
4-wire RS-485

ON

End of cable:
2-wire RS-485

ON

1

2

3

IRQ
RX
TX/RX

Not at end of cable:
switches off

IRQ
RX
TX/RX

IRQ
RX
TX/RX

1

2

3

1

2

3

Upper
address

Lower
address

8

9

A

B

C

D

E

F

7

6

5

4

3

2

1

0

Address Switch

4.

Use the three termination switches to set termination as follows:

– For all B3000-B units that are not at the physical end of the cable, set

all three of the termination switches to the OFF position.

– For the B3000-B at the physical end of the cable, set as follows:

– If using 2-wire RS-485, set IRQ and TX/RX ON, and set RX OFF.
– If using 4-wire RS-485, set all three of the termination switches

ON.

NOTE: If your system has a controller or computer at one end of the cable, you
only need to terminate the one B3000-B at the other end of the cable.

However, if you have B3000-B units at both ends of the cable with the
controller or computer somewhere in-between, you need to terminate the
B3000-B units at both ends of the cable and turn off the termination at the
controller or computer.

NOTE: Biasing is required at one location only. It can be applied anywhere on
the link, however, it is normally applied at the controller or computer. Because
of this, the B3000-B does not offer biasing switches.

5.

Use the two rotary address switches to set the unit’s address as described
in the next section.

Setting the Address and Communication Options

The brain’s address and other communication options are set
using the two 16-position rotary switches on the top of the
brain—an upper address switch and a lower address switch.
Each B3000-B contains four addresses consisting of the base
address, base +1, base +2, and base +3. The base address is
an even multiple of 4.

NOTE: The normal communication options are Binary and CRC.

The following tables show switch settings for each address.

• For Binary or ASCII, CRC16, see page 6

• For Binary or ASCII, Checksum, see page 7

B3000-B Serial Brain User’s Guide

5

5

SETTING THE ADDRESS AND COMMUNICATION OPTIONS

Upper address switch

Lower address switch

Upper address switch

Lower address switch

Binary Mode with CRC16

This mode is supported by PAC Control and Opto Control.

Base Address 0 4 8 12162024283236404448525660

Upper Address 0000111122223333

Lower Address 048C048C048C048C

Base Address 64 68 72 76 80 84 88 92 96 100 104 108 112 116 120 124

Upper Address 4444555566667777

Lower Address 048C048C048C048C

Base Address 128 132 136 140 144 148 152 156 160 164 168 172 176 180 184 188

Upper Address 88889999AAAABBBB

Lower Address 048C048C048C048C

Base Address 192 196 200 204 208 212 216 220 224 228 232 236 240 244 248 252

Upper Address CCCCDDDDE EEE F F F F

Lower Address 048C048C048C048C

ASCII Mode with CRC16

This mode is supported by PAC Control and Opto Control.

Base Address 0 4 8 12162024283236404448525660

Upper Address 0000111122223333

Lower Address 159D159D159D159D

Base Address 64 68 72 76 80 84 88 92 96 100 104 108 112 116 120 124

Upper Address 4444555566667777

Lower Address 159D159D159D159D

Base Address 128 132 136 140 144 148 152 156 160 164 168 172 176 180 184 188

Upper Address 88889999AAAABBBB

Lower Address 159D159D159D159D

Base Address 192 196 200 204 208 212 216 220 224 228 232 236 240 244 248 252

Upper Address CCCCDDDDE EEE F F F F

Lower Address 159D159D159D159D

6

B3000-B Serial Brain User’s Guide

CHAPTER 2: CONFIGURATION AND COMMUNICATION

Upper address switch

Lower address switch

Upper address switch

Lower address switch

Binary Mode with Checksum

This mode is not supported by PAC Control and Opto Control.

Base Address 0 4 8 12162024283236404448525660

Upper Address 0000111122223333

Lower Address 26AE26AE26AE26AE

Base Address 64 68 72 76 80 84 88 92 96 100 104 108 112 116 120 124

Upper Address 4444555566667777

Lower Address 26AE26AE26AE26AE

Base Address 128 132 136 140 144 148 152 156 160 164 168 172 176 180 184 188

Upper Address 8 8 8899 9 9AAAABBBB

Lower Address 26AE26AE26AE26AE

Base Address 192 196 200 204 208 212 216 220 224 228 232 236 240 244 248 252

Upper Address CCCCDDDDE EEE F F F F

Lower Address 26AE26AE26AE26AE

ASCII Mode with Checksum

This mode is not supported by PAC Control and Opto Control.

Base Address 0 4 8 12162024283236404448525660

Upper Address 0000111122223333

Lower Address 37BF37BF37BF37BF

Base Address 64 68 72 76 80 84 88 92 96 100 104 108 112 116 120 124

Upper Address 4444555566667777

Lower Address 37BF37BF37BF37BF

Base Address 128 132 136 140 144 148 152 156 160 164 168 172 176 180 184 188

Upper Address 8 8 8899 9 9AAAABBBB

Lower Address 37BF37BF37BF37BF

Base Address 192 196 200 204 208 212 216 220 224 228 232 236 240 244 248 252

Upper Address CCCCDDDDE EEE F F F F

Lower Address 37BF37BF37BF37BF

B3000-B Serial Brain User’s Guide

7

7

ADDRESSING I/O

Addressing I/O

The B3000-B is connected to a SNAP B-series I/O rack, which can hold either 8, 12, or 16 SNAP
modules. Digital modules (either input or output) contain four channels of I/O. Analog input
modules contain two channels and analog output modules contain one or two channels. Both
analog and digital modules can be on the same rack.

NOTE: Some SNAP modules cannot be used with the B3000-B. For example, analog modules with four or
more points cannot be used; high-density digital modules cannot be used. Also, some newer modules
require different processing and cannot be used with the B3000-B. Consult the module’s data sheet for
compatibility information.

A B3000-B is capable of addressing a maximum of 32 channels of digital I/O and 32 channels of
analog I/O. However, the I/O mounting racks will not accommodate 32 channels of both digital and
analog. The actual number of channels available depends on the combination of modules you
choose. For example, the SNAP-B16M rack can mount 16 modules. Up to eight of these modules can
be digital, providing 32 channels of digital I/O. The remaining eight module positions can be analog,
providing up to 16 channels of analog I/O. However, if all 16 modules are analog (no digital modules
at all), up to 32 channels of analog I/O are available.

I/O on the B3000-B is divided into four addresses (two digital I/O and two analog I/O). The digital
addresses are base+0 and base+1. The analog addresses are base+2 and base+3. Therefore, if the
brain is configured at address 12, the digital addresses would be 12 and 13 and the analog would be
14 and 15. See the following page for an illustration of the rack with digital and analog modules,
showing their addresses.

First Four Module Positions (0-3)—As you see in the illustration on the following page, each of
the first four module positions on the rack can hold either a digital or an analog module. These first
four positions can be all analog, all digital, or any mix of both.

These four positions constitute the 16 digital channels of digital address base+0, and the first eight
analog channels of analog address base+2.

Second Four Module Positions (4-7)—Like the first four module positions, each position in the
second group of four can hold either a digital or an analog module. They can be all analog, all digital
or any mix of both.

These four positions constitute the 16 digital channels of digital address base+1, or the second eight
analog channels of analog address base+2.

Last Eight Module Positions (8-15)—These positions hold analog modules only. These eight
positions constitute the 16 analog channels of analog address base+3.

8

B3000-B Serial Brain User’s Guide

CHAPTER 2: CONFIGURATION AND COMMUNICATION

Digital and Analog I/O Addressing

See explanation on the previous page.

B3000-B Serial Brain User’s Guide

9

9

ADDRESSING I/O

10

B3000-B Serial Brain User’s Guide

3: 3: WiringChapter 3

3: Wiring

See the section below for communication cables recommended for use with the B3000-B. See

page 12 for wiring diagrams that show how to connect a B3000-B brain to a SNAP PAC S-series

controller.

Communication Cables

The following cables are recommended for RS-485/422 serial communications. Although you may
elect to use other cables, keep in mind that low capacitance (less than 15 pF/ft.) is important for
high-speed digital communication links. The cables listed below are all 24-gauge, 7x32 stranded,
with 100-ohm nominal impedance and a capacitance of 12.5 pF/ft.

Select from the following two-, three-, and four-pair cables, depending on your application needs.
All will yield satisfactory results. It is recommended that you choose a cable with one more pair than
your application requires. Use one of the extra wires, rather than the shield, for the common.

Two-Pair:

Belden P/N 8102 (with overall shield)

Belden P/N 9729 (individually shielded)

Belden P/N 8162 (individually shielded with overall shield)

Manhattan P/N M3475 (individually shielded with overall shield)

Three-Pair:

Belden P/N 8103 (with overall shield)

Belden P/N 9730 (individually shielded)

Belden P/N 8163 (individually shielded with overall shield)

Manhattan P/N M3476 (individually shielded with overall shield)

Four-Pair:

Belden P/N 8104 (with overall shield)

Belden P/N 9728 (individually shielded)

Belden P/N 8164 (individually shielded with overall shield)

Manhattan P/N M3477 (individually shielded with overall shield)

See belden.com and www.manhattanwire.com.

B3000-B Serial Brain User’s Guide

11

11

WIRING DIAGRAMS

TX/RX +
TX/RX –
COM

Pin 1

TX/RX +
TX/RX –
COM

Termination switches, end of cable
IRQ and TX/RX ON; RX OFF

Middle of cable
All switches OFF

Earth GND

1

2

3

ON

1

2

3

ON

Both switches ON

TX/RX +
TX/RX –
COM

Pin 1

TX/RX +
TX/RX –
COM

Earth GND

IRQ +
IRQ –

IRQ +
IRQ –

TX/RX +

TX/RX –

COM

IRQ +

IRQ –

Middle of cable
All switches OFF

1

2

3

ON

1

2

3

ON

Termination switches, end of cable
IRQ and TX/RX ON; RX OFF

Both switches ON

Termination switches, end of cable
IRQ and TX/RX ON; RX OFF

Wiring Diagrams

Wiring to a SNAP-PAC-S1 Controller

NOTE: The SNAP-PAC-S1 controller only supports 2-wire RS-485.

Two-wire

Two-wire with interrupt line

12

B3000-B Serial Brain User’s Guide

CHAPTER 3: WIRING

Pin 1

Earth GND

TX/RX +
TX/RX –
COM

TX/RX +
TX/RX –
COM

TX/RX +
TX/RX –
COM

Middle of cable
All switches OFF

1

2

3

ON

1

2

3

ON

Termination switches, end of cable
IRQ and TX/RX ON; RX OFF

Configure serial port as
2-wire 485 with
termination and bias

Pin 1

Earth GND

TX/RX +
TX/RX –
COM

TX/RX +
TX/RX –
COM

TX/RX +
TX/RX –
COM

Middle of cable
All switches OFF

1

2

3

ON

1

2

3

ON

Termination switches, end of cable
IRQ and TX/RX ON; RX OFF

IRQ +
IRQ –

IRQ +
IRQ –

Configure serial port
as 2-wire 485 with
termination and bias

Wiring to a SNAP-PAC-S2 Controller

NOTE: The SNAP-PAC-S2 supports both two-wire and four-wire RS-485. Use PAC Manager to configure the
serial ports. For details, see form 1704, the PAC Ma n ag e r U s er’ s G ui de .

Two-wire

Two-wire with interrupt line

B3000-B Serial Brain User’s Guide

13

13

WIRING DIAGRAMS

RX +
RX –
COM

TX/RX –

TX/RX +

Earth GND

TX/RX +
TX/RX –
COM

RX –

RX +

TX/RX +
TX/RX ­COM

RX -

RX +

Middle of cable
All switches OFF

1

2

3

ON

1

2

3

ON

Termination switches, end of cable
All switches ON

4
5
3
1
2

NOTE: The connector pins
on an actual SNAP-PAC-S2
are in a different order than
shown here.

Configure serial port as
4-wire 485 with
termination and bias

TX/RX +
TX/RX ­COM

RX -

RX +

TX/RX +
TX/RX ­COM

RX -

RX +

Middle of cable
All switches OFF

1

2

3

ON

1

2

3

ON

Termination switches, end of cable
All switches ON

IRQ +
IRQ –

RX +
RX –
COM

TX/RX –

TX/RX +

Earth GND

NOTE: The connector pins
on an actual SNAP-PAC-S2
are in a different order than
shown here.

IRQ +
IRQ –

Config ure serial port as
4-wire 485 with
termination and bias

4
5
3
1

2
7
8

Wiring to a SNAP-PAC-S2 Controller (continued)

Four-wire

Four-wire with interrupt line

14

B3000-B Serial Brain User’s Guide

CHAPTER 3: WIRING

TX/RX +
TX/RX –
COM

Pin 1

TX/RX +
TX/RX –
COM

Earth GND

PCI-AC48 adapter card in PC

Po

r

t

A

Middle of cable
All switches OFF

1

2

3

ON

1

2

3

ON

Termination switches, end of cable
IRQ and TX/RX ON; RX OFF

TX/RX +
TX/RX –
COM

Pin 1

TX/RX +
TX/RX –
COM

PCI-AC48 adapter card in PC

IRQ +
IRQ –

Earth GND

P

o

r

t

A

IRQ +
IRQ –

Termination switches, end of cable
IRQ and TX/RX ON; RX OFF

Middle of cable
All switches OFF

1

2

3

ON

1

2

3

ON

Wiring to a PCI-AC48 Adapter Card in a PC

NOTE: Check the default termination and bias on the PCI-AC48 and make certain they are set
appropriately for the network. Termination should be at each end of the RS-485 cable, and biasing should
be at one location only, typically at the host device, which would be the PCI-AC48 in this case.

NOTE: For system architecture drawings using a PCI-AC48 adapter card in a PC, see form 787, the B3000
Brain Data Sheet.

Two-wire

Two-wire with interrupt line

B3000-B Serial Brain User’s Guide

15

15

WIRING DIAGRAMS

TX/RX +
TX/RX –
COM
RX +
RX –

TX/RX +
TX/RX –
COM
RX +
RX –

Earth GND

PCI-AC48 adapter card in PC

Po

r

t

B

Po

r

t

A

Termination switches, end of cable
All switches ON

Middle of cable
All switches OFF

1

2

3

ON

1

2

3

ON

NOTE: An actual PCI-AC48 card
connector has 10 pins, and the
pins are in a different order
than shown here.

COM
TX +
TX –

RX +
RX –

2

1

2

1

3

TX/RX +
TX/RX –
COM
RX +
RX –
IRQ +
IRQ –

TX/RX +
TX/RX –
COM
RX +
RX –
IRQ +
IRQ –

Earth GND

PCI-AC48 adapter card in PC

Po

r

t

B

Po

r

t

A

Termination switches, end of cable
All switches ON

Middle of cable
All switches OFF

1

2

3

ON

1

2

3

ON

NOTE: An actual PCI-AC48 card
connector has 10 pins, and the
pins are in a different order
than shown here.

COM

TX –

IRQ –

IRQ +

RX +
RX –

TX –
IRQ +

TX +

2

1

3

2

1

5

4

Wiring to a PCI-AC48 Adapter Card in a PC (continued)

Four-wire

Four-wire with interrupt line

16

B3000-B Serial Brain User’s Guide

Chapter 4
4—4: Maintenance and TroubleshootingChapter 4

4: Maintenance and
Troubleshooting

This chapter includes the following maintenance and troubleshooting information:

Maintenance

Loading New Firmware

Resetting the Brain

LED Indicators and STAT LED Blink Codes

Troubleshooting

Troubleshooting Checklist

Making Sure the Brain is in Normal Mode

Maintaining the B3000-B Serial Brain

Loading New Firmware

A B3000-B brain contains firmware (sometimes referred to as the kernel), which is similar to an
operating system. If the firmware should become damaged, or if a new version of the firmware is
released, you can load new firmware to the brain using the software utility PAC Manager. PAC
Manager is on the CD that came with the brain and is also available as a free download from our
website, www.opto22.com.

Follow these steps to replace the firmware.

1.

Make sure you have the following before beginning:

page 17

page 21

page 21

page 22

page 23

– Internet access to obtain new firmware from our website.

– PAC Manager (from the CD that came with the brain or from our website) installed on your

PC. If the brain is attached to a SNAP PAC S-series controller, the PC must be on the same
Ethernet network as the controller. If not, you need a PCI-AC48 adapter card and an RS-232
to RS-485 adapter cable to connect directly from the PC to the brain.

– Address information for the controller(s) and/or brain(s) that will receive the new firmware.

2.

Make sure the brain is in Binary CRC16 mode.

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17

MAINTAINING THE B3000-B SERIAL BRAIN

For more information, see “Setting the Address and Communication Options” on page 5. ASCII
and Checksum are not supported in PAC Manager.

3.

Restart the device in failsafe bootloader mode, and then watch for the blink code to make sure
the device is in this mode. See “Resetting the Brain” on page 21.

4.

Attach the PC with PAC Manager to the brain using either Ethernet Pass-Through or Serial Direct
as follows:

– For Ethernet Pass-Through, connect via Ethernet through a SNAP PAC S-series controller.

– For Serial Direct, connect directly from the PC using a serial cable and a PCI-AC48 adapter

card.

For more information on connections, see Chapter 3: Wiring.

5.

Choose Start > Programs > Opto 22 > PAC Project Software > PAC Manager.

6.

In the PAC Manager main window, choose Tools > Install Firmware via Failsafe Bootloader
Mode. Click OK at the message about products it can be used with.

7.

(Ethernet Pass-Through only) If the brain is connected through an S-series controller, click the
Ethernet Pass-Through tab, and do the following. For Serial Direct, skip to step 8.

NOTE: Before proceeding, make sure the strategy on the controller is stopped.

a.

In the Controller section of the Loader Mode Firmware Update dialog box:
– Enter the IP address of the controller.
– Leave the Port at 2001 unless you have changed it on the controller.
– Choose the serial port on the controller that the brain is connected to.
– Make sure the baud rate matches that on the brain.
– If you are using a 2-wire connection, check 2-Wire.

b.

In the Opto 22 Device section:
– Select B3000-B as the type.

18

B3000-B Serial Brain User’s Guide

– Select the brain’s serial address.

CHAPTER 4: MAINTENANCE AND TROUBLESHOOTING

–Skip to step 9.

8.

(Serial Direct only) If the brain is connected directly to a PC, click the Serial Direct tab, and do
the following.

a.

In the Computer section:
– Choose the COM port the brain is connected to.
– Make sure the baud rate matches that on the brain.

b.

In the Opto 22 Device section:
– Choose B3000-B as the type.

B3000-B Serial Brain User’s Guide

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19

MAINTAINING THE B3000-B SERIAL BRAIN

– Enter the brain’s serial address.

9.

Click the blue Get Latest Firmware link.

The link opens your browser and takes you to the Firmware Downloads section of our website,
www.opto22.com.

10.

Choose the firmware for your part number from the list and download it to your PC.

If you have any difficulty obtaining or loading new firmware, contact Opto 22 Product Support.

11.

Click the browse button and locate the firmware file you just downloaded. Double-click
the filename.

The path and filename appear in the Filename field.

12.

When all the fields are correct, click Start Update.

Progress is shown in the lower part of the window. When the process is complete, either repeat
from step 7 or step 8 for another device, or click Done.

The device is now ready to use.

20

B3000-B Serial Brain User’s Guide

CHAPTER 4: MAINTENANCE AND TROUBLESHOOTING

SERIAL

STAT

IRQ

Resetting the Brain

1.

Carefully insert a straightened paperclip or stiff wire into the small hole labeled RESET.

2.

Depending on the type of reset you need, press and hold down the RESET button as described
below. DO NOT hold the button down too long.

NOTE: Do not reset the brain to hardware test mode unless Opto 22 Product Support tells you to.

Reset type How to use the reset button What happens Notes

Brain restarts.

Simple reset Press and release immediately

Files in RAM are erased. Files in flash mem­ory are untouched.

Restore factory
defaults

Failsafe bootloader
mode

Hardware test mode

Press just until STAT LED turns
solid green (1-2 sec)

Press and wait until LED turns
solid green. Release when LED
starts to blink (2-5 sec)

Press and hold until LED starts
blinking orange rapidly and con­tinuously (> 5 sec)

Brain restarts.
Files in RAM and flash memory are erased.
I/O configuration in flash is erased.

Brain restarts.
Files in RAM are erased. Files in flash mem­ory are untouched.

Brain restarts.
Files in RAM and flash memory are erased.
I/O configuration in flash is erased.

Cycle power to recover. Result
is the same as a simple reset.

Cycle power to recover. Result
is the same as restoring to fac­tory defaults.

LED Indicators and STAT LED Blink Codes

Three LEDs on the top of the B3000-B brain (STAT, SERIAL, and IRQ) indicate status conditions.

LED Indicates

STAT Brain status

Green

SERIAL

Red
Amber

IRQ mistic interrupt currently active.

= Transmit
= Receive
= Transmit/Receive

The STAT LED color and blink pattern provides useful information during operation and in
troubleshooting as follows:

Green

If the STAT LED is on and remains green, the brain is operating normally.

If the STAT LED blinks green when the brain starts up, it indicates the following:

Number of

Blinks

2 fast Normal; the brain’s firmware is starting up.

5 fast Default settings have been successfully restored.

7fast

Speed of

Blinks

Means

Entering failsafe bootloader mode. (See “Resetting the

Brain” on page 21 for more information.)

B3000-B Serial Brain User’s Guide

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21

TROUBLESHOOTING A B3000-B BRAIN

Orange

If the STAT LED blinks orange fast and continuously after you pushed the RESET button, the device is
in hardware test mode (see page 21).

Red and Green

If the STAT LED blinks red and green alternately, it indicates that the brain is in failsafe
bootloader mode. See “Resetting the Brain” on page 21 for more information.

Red

If the STAT LED blinks red, it indicates the following:

Number of

Blinks

4slow

5 slow Fatal error

6 slow RAM error Contact Product Support.

16 slow Serial flash failure Contact Product Support.

20 slow Digital failure Contact Product Support.

21 slow Bus failure Contact Product Support.

Speed of

Blinks

Means Problem and Workaround

Incorrect serial settings. Invalid
hardware revision

Troubleshooting a B3000-B Brain

Troubleshooting Checklist

If you are having trouble communicating with a B3000-B brain, check the following:

• Make sure the brain’s hold-down screw has been tightened so that it is snug. (Do not
overtighten.)

Check serial settings (See page 4.)
Contact Product Support.

Firmware or hardware problem. Check the power
supply and connections before restarting. Call
Product Support if the error is repeated.

• Make sure the brain has been turned on and that the STAT LED is lit (green). If the STAT LED is
not green, the brain may not be in normal mode. See below, “Making Sure the Brain is in

Normal Mode.”

• Make sure that power to the brain is sufficient. Each brain should have its own power supply.
The brain needs 5.00 to 5.20 VDC, measured downstream of the fuse on the rack.

• If you’re accessing the brain through a SNAP PAC S-series controller, make sure you can
communicate with the controller over Ethernet. For help, see the controller user’s guide
(form 1592).

• Check physical connections between the controller or PC and the brain.

• Verify that the following serial parameters on the controller or PC and the brain correspond:

baud rate, address, 2-wire or 4-wire connections.

• Make sure termination switches are set correctly for all brains on the serial network.

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B3000-B Serial Brain User’s Guide

CHAPTER 4: MAINTENANCE AND TROUBLESHOOTING

Making Sure the Brain is in Normal Mode

If you are having trouble communicating with the brain, it might be in failsafe bootloader mode or
hardware test mode. The brain restarts in one of these modes if you hold down the RESET button

longer than the time needed to restore default settings. For more information on using the RESET
button, see “Resetting the Brain” on page 21.

• Failsafe bootloader mode is used to update firmware. It is also used for troubleshooting a
problem with Opto 22 Product Support. You know the brain is in this mode if the STAT LED is
blinking red and green alternately. If your brain restarts in failsafe bootloader mode, simply
cycle power to the device. This action performs a simple restart and allows you to
communicate with the brain.

• The brain enters hardware test mode if you hold down the RESET button for more than five
seconds. This mode puts the brain into a continuous testing loop. If your brain is in hardware
test mode, cycle power to it, and it will restart as if you had reset it to factory defaults.

B3000-B Serial Brain User’s Guide

23

23

TROUBLESHOOTING A B3000-B BRAIN

24

B3000-B Serial Brain User’s Guide