Summary of Contents for SNAP PAC BRAINS SNAP-PAC-EB1
- Page 1 Form 1690 SNAP PAC BRAINS USER’S GUIDE SNAP-PAC-EB1 SNAP-PAC-EB2 SNAP-PAC-EB1-FM SNAP-PAC-EB2-FM SNAP-PAC-EB1-W SNAP-PAC-EB2-W SNAP-PAC-SB1 SNAP-PAC-SB2...
- Page 3 SNAP PAC BRAINS USER’S GUIDE SNAP-PAC-EB1 SNAP-PAC-EB2 SNAP-PAC-EB1-FM SNAP-PAC-EB2-FM SNAP-PAC-EB1-W SNAP-PAC-EB2-W SNAP-PAC-SB1 SNAP-PAC-SB2 Form 1690-170719—July 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: 951-695-3017 Email: support@opto22.com...
- Page 4 SNAP PAC Brains User’s Guide Form 1690-170719—July 2017 Copyright © 2007–2017 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.
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Page 5: Table Of Contents
SNAP PAC Brains as Part of a Distributed SNAP PAC System ......21... - Page 6 Troubleshooting SNAP PAC Brains........
- Page 7 Index ..............57 SNAP PAC Brains User’s Guide...
- Page 8 SNAP PAC Brains User’s Guide...
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Page 9: Chapter 1: Introduction
I/O in an Allen-Bradley Logix-based PLC system. All SNAP PAC brains provide local intelligence that frees the controller for supervisory tasks. SNAP PAC brains can also be used independently for standalone I/O processing and communication. SNAP PAC brains use either Ethernet networks or serial networks. -
Page 10: Communications
Each brain is equipped with two switched Ethernet network interfaces. Because these interfaces share a single IP address and act just like an Ethernet switch, SNAP PAC brains can be installed in a multi-drop (daisy-chain) configuration, extending the control network without the expense of additional Ethernet network hardware. -
Page 11: Other Communication Methods
#1465, the OptoMMP Protocol Guide, for more information. About this Guide This guide shows you how to install and use SNAP PAC brains. This guide assumes that you are already familiar with networking (serial, wired Ethernet, or wireless LAN) for the types of brains you’ll be using. -
Page 12: Other Documents You May Need
Chapter 1: Introduction—information about the guide and how to reach Opto 22 Product Support. Chapter 2: Installing a SNAP PAC Brain—quick-start steps to get SNAP PAC brains up and running quickly. Chapter 3: System Architecture—conceptual information on networking and communicating with SNAP PAC brains, and brain specifications. -
Page 13: For Help
CHAPTER 1: INTRODUCTION 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 NOTE: Email messages and phone toll-free in the U.S. - Page 14 FOR HELP SNAP PAC Brains User’s Guide...
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Page 15: Chapter 2: Installing A Snap Pac Brain
A SNAP-PS5 or SNAP-PS5U power supply or other 5 VDC power supply (-0/+0.1 VDC at 4.0 A) applied to the rack. (Additional power may be required for SNAP I/O modules depending on the number and type of modules used. See the module data sheets on our website, www.opto22.com, for information.) SNAP PAC Brains User’s Guide... -
Page 16: Installing Software
1. Place the rack so that the module connector numbers are right-side up, with zero on the left. Module Module connectors Brain connector position zero Retention bar 2. Position the module over the module connector, aligning the small slot at the base of the module with the retention bar on the rack. SNAP PAC Brains User’s Guide... -
Page 17: Removing A Module
3. Squeeze the module tool against the module to open the release latch, and pull straight up on the module to remove 4. Continue with “Installing the Brain” on page SNAP PAC Brains User’s Guide... -
Page 18: Installing The Brain
Allen-Bradley Logix system, follow instructions in form #1770, the EtherNet/IP for SNAP PAC Protocol Guide. These guides are in Adobe Acrobat PDF format on the CD that came with the brain and are also available from our website, www.opto22.com. SNAP PAC Brains User’s Guide... -
Page 19: Setting Up Serial Networking
Be sure to apply biasing at the host device, which is typically a page SNAP PAC S-series controller or a PCI-AC48. NOTE: Bias on a SNAP PAC SB brain is always ON. SNAP PAC Brains User’s Guide... -
Page 20: Guidelines For Grounding Snap Pac Brains And Controllers
16-position rotary address switches. Guidelines for Grounding SNAP PAC Brains and Controllers Power supply side: The DC output of the power supply to the I/O unit (or controller) should be "floating,”... -
Page 21: Serial Wiring Diagrams
Pin 1 TX/RX + TX/RX + TX/RX + TX/RX – TX/RX – TX/RX – Chassis GND 2-wire termination, end of link 2-wire, middle of link Switches 3 & 2 OFF All switches OFF Switch 1 ON SNAP PAC Brains User’s Guide... - Page 22 RX + RX + TX/RX + shown here. RX - RX - TX/RX – 4-wire termination, end of link Chassis GND 4-wire, middle of link Switch 3 OFF All switches OFF Switches 2 & 1 ON SNAP PAC Brains User’s Guide...
- Page 23 TX/RX + TX/RX – TX/RX – RX + RX + RX – RX – Chassis GND 4-wire termination, end of link 4-wire, middle of link Switch 3 OFF All switches OFF Switches 2 & 1 ON SNAP PAC Brains User’s Guide...
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Page 24: What's Next
“Using SNAP PAC Ethernet Brain Wired Network Interfaces” on page To use OLE for process control (OPC) with SNAP PAC brains, purchase the OptoOPCServer and see Opto 22 form #1439, the OptoOPCServer User’s Guide. To communicate with SNAP PAC brains using Modbus/TCP, see form #1678, the Modbus/TCP Protocol Guide. -
Page 25: Chapter 3: System Architecture
Chapter 3 3: System Architecture This chapter explains how to use SNAP PAC brains on an Ethernet or serial network and how to communicate with them. It includes information on: Communication options See below System architecture page 21 Networking page 26... -
Page 26: Simultaneous Communication
• SNMP (Simple Network Management Protocol) makes it possible to monitor devices attached to SNAP PAC brains just as you would any computer or server on the Ethernet network, using ® an SNMP-based enterprise management system such as Computer Associates’ Unicenter ®... -
Page 27: Snap Pac Serial Brains
Custom software applications can be developed using the OptoMMP protocol to read and write to SNAP PAC brains. For Ethernet brains, use our OptoMMP Communication Toolkit. For serial brains, the Toolkit cannot be used, but you can build your own driver for the protocol. -
Page 28: Choosing Communication Methods
COMMUNICATION OPTIONS Choosing Communication Methods How do you need to communicate with SNAP PAC brains to match the tasks your application requires? Check the following table for help in choosing communication methods and finding out where to look for more information on them. -
Page 29: System Architecture
PC used to develop a PAC Control strategy. Once developed, the strategy runs SNAP PAC brains and I/O (distributed units). The top four are on independently on the SNAP PAC controller. an Ethernet network; the bottom two are on a serial network. -
Page 30: Snap Pac Wired+Wireless Brains
SYSTEM ARCHITECTURE SNAP PAC Wired+Wireless Brains In this diagram, the SNAP PAC controller communicates wirelessly with the SNAP PAC brains, while at the same time communicating on a wired network with PCs used for development and for an operator interface. As in the diagram on the previous page, only basic SNAP PAC System capabilities using free PAC Project Basic software are shown. -
Page 31: Snap Pac Ethernet Brain In An Allen-Bradley Logix System
Because the brain automatically handles many processing tasks locally, you can add more I/O points and process control functions to your system with little impact on PLC scan time. The system as a whole becomes more efficient with intelligence distributed to the remote I/O. SNAP PAC brains and I/O provide distributed Distributed... - Page 32 SYSTEM ARCHITECTURE Custom application using ActiveX or C++ OptoMMP protocol Modbus/TCP Any OPC client software, through OptoOPCServer (purchase separately) Third-party HMI • Wonderware • Intellution • Iconics Modbus/TCP hardware and software SNAP PAC Brains User’s Guide...
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Page 33: Snap Pac Serial Brain As An Independent I/O Processor
Ethernet communication only. “Setting Up Serial Networking” on page 11 for more information on wiring to the PC. PC with PCI-AC48 adapter card, running a custom application built using the OptoMMP protocol Serial network Third-party devices SNAP PAC Brains User’s Guide... -
Page 34: Ethernet Networking
PC or a controller. (A crossover cable is not required for direct connection to a host.) You can use either Ethernet interface on the brain for the connection. Additional SNAP PAC brains can be daisy-chained from the first brain using the brain’s second Ethernet network interface, which acts as a network switch. -
Page 35: Developing An Independent Ethernet Network
Because SNAP PAC brains have two switched Ethernet network interfaces, you can install them in a daisy-chain configuration. See the next section for more information. -
Page 36: Using Snap Pac Ethernet Brain Wired Network Interfaces
IMPORTANT: If you choose a daisy-chain configuration, make certain that the brains are connected correctly. Incorrect connections can produce major problems on the network. Make sure that daisy-chain connections are made in a simple open-ended chain, as shown in the diagram on the following page. SNAP PAC Brains User’s Guide... -
Page 37: Correct Connections For Daisy-Chaining
NOTE: There is one exception to this rule: you can connect the network in a loop if at least one switch in the loop supports STP/RSTP (Spanning Tree Protocol/Rapid Spanning Tree Protocol) and has that feature enabled. Incorrect Network Connections SNAP PAC Brains User’s Guide... -
Page 38: Specifications
32 stations maximum on a segment (including PC, controller, repeaters, and I/O Range: Serial multidrop units); up to 3000 ft (914 m) on a segment Connector screw Torque: 1.7 in-lb (0.19 N-m) * Requires Wired+Wireless model (SNAP-PAC-EB1-W or SNAP-PAC-EB2-W) SNAP PAC Brains User’s Guide... -
Page 39: Leds And Network Interfaces-Wired Ethernet Brains
Reserved for future use updated one at a time. “Correct Connections for Daisy-Chaining” on page 29 “Blink Codes” on page LEDs and Network Interfaces—Wired+Wireless Brains This diagram applies to part numbers SNAP-PAC-EB1-W and SNAP-PAC-EB2-W. Ethernet LEDs WLAN LED Brain reset button Switched network... -
Page 40: Leds And Network Interfaces-Serial Brains
NOTE: IRQ connections and LED are reserved for future use. Appendix A for serial cable recommendations. See “Setting Up Serial Networking” on page 11 for wiring. For details on LEDs, see “Blink Codes” on page SNAP PAC Brains User’s Guide... -
Page 41: Snap Pac Brain Comparison Chart
CHAPTER 3: SYSTEM ARCHITECTURE SNAP PAC Brain Comparison Chart For feature descriptions: page 35. This table compares SNAP PAC brains with firmware 8.5 or newer. FEATURE Factory Mutual approval (U.S. and Canada) ... - Page 42 Digital I/O modules can be placed only in the first 8 slots on the rack. Currently available on all types of modules except analog modules with more than 4 points. Available when used with OptoOPCServer and PAC Control, through a SNAP PAC S-series controller. Does not support serial events. SNAP PAC Brains User’s Guide...
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Page 43: Feature Descriptions
Counters SNAP-PAC-EB1 and SNAP-PAC-SB1 brains offer high-speed counting (up to 20 KHz) on 4-channel modules; the speed of the counter depends upon the speed of the module used. EB2 and SB2 brains do not offer high-speed counting. - Page 44 PID loops are often used in temperature control. Average filter (Analog inputs)—A filter weight smooths analog input signals that are erratic or change weight suddenly. See the PAC Manager User’s Guide for more details. SNAP PAC Brains User’s Guide...
- Page 45 (SNAP PAC Ethernet brains only) SNAP PAC Ethernet brains have a substantial area FTP Server available for file storage, and data can be easily moved to and from these files using FTP. For more information on the file system, see the PAC Manager User’s Guide. SNAP PAC Brains User’s Guide...
- Page 46 SNAP PAC BRAIN COMPARISON CHART SNAP PAC Brains User’s Guide...
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Page 47: Chapter 4: Maintenance And Troubleshooting
The battery lasts for up to 10 years when power is off. SNAP PAC EB brains manufactured before July 1, 2007 use a CR2032 lithium backup battery, which is user replaceable. These batteries are readily available in retail stores. SNAP PAC Brains User’s Guide... -
Page 48: Changing The Ethernet Brain's Ip Address
PAC Manager User’s Guide. Setting Time and Date The SNAP PAC brain’s built-in clock is set at the factory. To change the time and date, see instructions in the PAC Manager User’s Guide. SNAP PAC Brains User’s Guide... -
Page 49: Blink Codes
NS LED Description Steady Off The device does not have a valid IP address or has no power. Flashing Green EtherNet/IP only: No connections Steady Green EtherNet/IP only: Connected Flashing Red EtherNet/IP only: Connection Timeout SNAP PAC Brains User’s Guide... -
Page 50: Stat Led-Green
(Both brains) Invalid MAC Contact Product Support. address or hardware revision Firmware or hardware problem. Check the power slow Fatal error supply and connections before restarting. Call Product Support if the error is repeated. SNAP PAC Brains User’s Guide... -
Page 51: Getting Device And Firmware Information
1. If PAC Manager is not already open, choose Start > Programs > Opto 22 > PAC Project > PAC Manager. The PAC Manager main window opens. 2. In the PAC Manager main window, click the Inspect button SNAP PAC Brains User’s Guide... - Page 52 If the brain has not been defined, the Add New Device dialog box appears. 5. Choose the Connection Type. a. For an EB brain, click Direct Connection to Ethernet Device. – Enter the IP address of the brain. SNAP PAC Brains User’s Guide...
- Page 53 7. In the Inspect Opto 22 Device window, click the Status Read button in the upper left. Information from the brain is displayed in the window. Keep this window open on your screen when you call Product Support. For explanations of the data shown, see PAC Manager User’s Guide (form 1704). SNAP PAC Brains User’s Guide...
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Page 54: Troubleshooting Snap Pac Brains
IP address should be written. • Make sure the brain has been assigned a valid IP address and subnet mask. SNAP PAC brains come from the factory with a default IP address of 0.0.0.0, which is invalid. The default subnet mask is 255.255.255.0. -
Page 55: Accessing The Ethernet Brain With Pac Manager
3. In the Device Name field, enter the name of the brain or choose the name from the drop-down list. (You can also type in the brain’s IP address.) 4. Click Status Read. Information from the brain is displayed in the window: SNAP PAC Brains User’s Guide... -
Page 56: Solving Ethernet Network Problems
• The Ethernet network switch has power. Switch LEDs indicate that the connection is up. If SNAP PAC brains are daisy-chained, LNK LEDs for both of their Ethernet interfaces are lit. • Neither the PC nor the brain uses the switch’s uplink port. -
Page 57: Communicating With The Sb Brain
• 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. SNAP PAC Brains User’s Guide... -
Page 58: Timeout Errors When Communicating Via A Controller
NOTE: Turn on blink codes only for debugging purposes; they will degrade performance. 1. If PAC Manager is not already open, choose Start > Programs > Opto 22 > PAC Project > PAC Manager. SNAP PAC Brains User’s Guide... - Page 59 Malformed serial packet. Did not receive entire packet. fast OptoMMP application error fast UART Receive error fast UART Send error fast Packet address doesn’t match brain’s address IMPORTANT: Don’t forget to disable communication error blink codes when you’ve finished troubleshooting. SNAP PAC Brains User’s Guide...
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Page 60: Additional Troubleshooting Tools
Enter key. 2. In the PAC Manager main window, click the Inspect icon 3. In the Device Name field, type the name or IP address of the controller. Then, click Status Write. SNAP PAC Brains User’s Guide... -
Page 61: Snap Pac Brains User's Guide
5. Click the Apply button to write your changes to the controller. 6. In the Operation Commands list, highlight Store configuration to flash. Click Send Command. 7. In the Operation Commands list, highlight Restart brain from powerup. Click Send Command. The new TCP parameters are set. SNAP PAC Brains User’s Guide... - Page 62 ADDITIONAL TROUBLESHOOTING TOOLS SNAP PAC Brains User’s Guide...
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Page 63: Serial Cables
Manhattan P/N M39251 (individually shielded with overall shield) Address Table Serial addresses from 0–255 can be used for serial-based SNAP PAC brains. The brain’s address is set using the two rotary switches on the top of the brain, as shown on page 11. - Page 64 ADDRESS TABLE Address Hex equivalent Address upper Address lower Address Hex equivalent Address upper Address lower Address Hex equivalent Address upper Address lower Address Hex equivalent Address upper Address lower Address Hex equivalent Address upper Address lower Address Hex equivalent Address upper Address lower Address...
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Page 65: Index
35 Scratch Pad, 37 state, 35 serial networking, 11 totalizer, 35 TPO, 35 watchdog, 36 direct connection calibrating analog point, 36 Ethernet, 26 clamping analog output point, 36 serial, 25 communicating distributed system, 21, 22 SNAP PAC Brains User’s Guide... - Page 66 Ethernet errors, 48 LED descriptions, 31, 32 Ethernet interfaces, 28, 31 Product Support, 5 incorrect Ethernet connections (diagram), 29 high-density digital counter, 35 independent Ethernet network, 27 serial port, 32 termination, 13 troubleshooting Ethernet, 48 SNAP PAC Brains User’s Guide...
- Page 67 TPO, 35 retransmit timeout (RTO), 52 troubleshooting RSTP, 29 blink codes, 41 Ethernet brain, 46 Ethernet network, 48 LED descriptions, 31, 32 scaling, description, 36 Product Support, 5 Scratch Pad areas, 37 serial brain, 49 SNAP PAC Brains User’s Guide...
- Page 68 36 watchdog, definition, 36 wireless LAN, 27 diagram, 22 wiring diagrams serial brain, 13 SNAP PAC Brains User’s Guide...
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