1747-6.22, Backup Scanner User Manual

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4-58 Operating Your SLC 500 Backup System Fail-over Sequencing When the primary system fails, the communications relays are opened immediately. The primary 1747-BSN ceases its data transfer function and sends switching commands to the secondary 1747-BSN. After all the RIO communications terminate, the secondary communication channel relays are closed. Then the former secondary SLC is ready to take control of the system. Power Down Sequencing Restarting a failed system Publication 1747-6.22 Since the secondary’s input image table has been loaded on-line with real data from the Smart Switch, the application program does not have to delay the use of its input image table until the completion of at least one complete RIO scan. The secondary’s (now primary) input image table always has valid data. No special considerations (beyond the standard precautions for a programmable controller) are required when powering down the system. Power down should begin with the secondary system and proceed to the primary. If the primary system is powered down first, a switchover occurs. A failed system (that has been repaired) can be restarted as described in the following sequence. It is not necessary to power-down or change the mode of primary SLC 5/0x. 1. Set the secondary SLC 5/0x (processor of the repaired system) to program mode; 2. Apply power to the secondary system; 3. Download the applications program to the secondary SLC 5/0x; 4. Change the backup processor mode of operation from Program mode to Run mode.
Understanding Remote Input and Output Image Files Logical Rack 0 Logical Rack 1 Logical Rack 2 Logical Rack 3 Logical Rack 0 Group 0 Logical Rack 0 Group 1 Logical Rack 0 Group 2 Logical Rack 0 Group 3 Logical Rack 0 Group 4 Logical Rack 0 Group 5 Logical Rack 0 Group 6 Logical Rack 0 Group 7 Logical Rack 1 Group 0 Logical Rack 1 Group 1 Logical Rack 1 Group 2 Logical Rack 1 Group 3 Logical Rack 1 Group 4 Logical Rack 1 Group 5 Logical Rack 1 Group 6 Logical Rack 1 Group 7 Logical Rack 2 Group 0 Logical Rack 2 Group 1 Logical Rack 2 Group 2 Logical Rack 2 Group 3 Logical Rack 2 Group 4 Logical Rack 2 Group 5 Logical Rack 2 Group 6 Logical Rack 2 Group 7 Logical Rack 3 Group 0 Logical Rack 3 Group 1 Logical Rack 3 Group 2 Logical Rack 3 Group 3 Logical Rack 3 Group 4 Logical Rack 3 Group 5 Logical Rack 3 Group 6 Logical Rack 3 Group 7 Word 0 Word 1 Word 2 Word 3 Word 4 Word 5 Word 6 Word 7 Word 8 Word 9 Word 10 Word 11 Word 12 Word 13 Word 14 Word 15 Word 16 Word 17 Word 18 Word 19 Word 20 Word 21 Word 22 Word 23 Word 24 Word 25 Word 26 Word 27 Word 28 Word 29 Word 30 Word 31 Scanner Configuration and Programming Chapter 5 This chapter contains information necessary to: • understand remote I/O image files • understand RIO configuration using G files • control and view RIO devices using the M0 and M1 files • understand slot addressing • quickly configure the RIO Scanner The SLC system allows you to assign up to 32 words of input and output image data to a scanner. This allows your scanner to access a maximum of four full logical racks (512 input and output points) of data from remote devices. The illustration below shows how logical racks, logical groups, and words are allocated within the I/O image files. Note that this illustration describes the input image file. The scanner’s output image file is the same, except that its addressing scheme starts with O:e.O and ends with O:e.31. 15 17 8 14 16 8 13 15 8 12 14 8 11 13 8 10 12 8 9 11 8 8 10 8 7 7 8 6 6 8 5 5 8 4 4 8 3 3 8 2 2 8 1 1 8 0 0 8 I:e.0 I:e.1 I:e.2 I:e.3 I:e.4 I:e.5 I:e.6 I:e.7 I:e.8 I:e.9 I:e.10 I:e.11 I:e.12 I:e.13 I:e.14 I:e.15 I:e.16 I:e.17 I:e.18 I:e.19 I:e.20 I:e.21 I:e.22 I:e.23 I:e.24 I:e.25 I:e.26 I:e.27 I:e.28 I:e.29 I:e.30 I:e.31 Publication 1747-6.22
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Backup Scanner 1747-BSN User Manual
Page 3 and 4:
Overview Table of Contents Preface
Page 5 and 6: Scanner Configuration and Programmi
Page 7 and 8: Switchover Considerations Programmi
Page 9 and 10: Glossary Index Table of Contents xi
Page 11 and 12: Who Should Use This Manual How to U
Page 13 and 14: Conventions Used in This Manual The
Page 15 and 16: Overview This chapter contains the
Page 17 and 18: Local I/O Remote I/O Processor I/O
Page 19 and 20: SLC and Scanner Asynchronous Operat
Page 21 and 22: RIO Logical Rack 0 RIO Logical Rack
Page 23 and 24: Physical and Logical RIO Link Speci
Page 25 and 26: Overview 1-27 Complementary I/O: Pl
Page 27 and 28: Overview 1-29 Complementary I/O: Pl
Page 29 and 30: Slot Pair I O I O I O I O 0 1 2 3 4
Page 31 and 32: Hardware Features Overview 1-33 Not
Page 33 and 34: Module Address Switch Overview 1-35
Page 35 and 36: A Typical SLC 500 Backup Configurat
Page 37 and 38: Overview 1-39 Data table values are
Page 39 and 40: Required Tools and Equipment Chapte
Page 41 and 42: 5. Configure the system. Quick Star
Page 43 and 44: Configuration Selection Installatio
Page 45 and 46: Backup Scanner Installation Install
Page 47 and 48: Installation and Wiring 3-49 Termin
Page 49 and 50: Chapter 4 Operating Your SLC 500 Ba
Page 51 and 52: (1) Operating Your SLC 500 Backup S
Page 53 and 54: Operating Your SLC 500 Backup Syste
Page 55: Startup Sequencing Operating Your S
Page 61 and 62: Rules for Configuring the Scanner G
Page 63 and 64: Logical Rack 0 Logical Rack 1 Logic
Page 65 and 66: Considerations When Configuring Rem
Page 69 and 70: Output Reset Control Device Inhibit
Page 71 and 72: M0 File - RIO Device Reset Control
Page 75 and 76: M1 Status File Description General
Page 77 and 78: Logical Device Starting Address Sta
Page 79 and 80: Logical Device Fault Status M1 (Sta
Page 83 and 84: Primary Logical Device Address, Wor
Page 85 and 86: SLC/Scanner Configuration Scanner C
Page 87 and 88: Chapter 6 Module Control and Status
Page 89 and 90: Module Control and Status Word 6-91
Page 91 and 92: Transferring Data over the High-Spe
Page 93 and 94: Data Transfer Status Word Module Co
Page 95 and 96: Program File 2 0000 0001 0002 Modul
Page 97 and 98: Program File 4 0000 0001 0002 0003
Page 99 and 100: Module Status Counters Module Contr
Page 101 and 102: RIO Block Transfer Theory of Operat
Page 103 and 104: SLC Processor ➀ RIO Block Transfe
Page 105 and 106: RIO Block Transfer General Function
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Example 2 # 2 # 4 # 1 # 2 # 3 # 4 #
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M0 File BT Control Buffer Layout BT
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Error Code Description RIO Block Tr
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RIO Block Transfer 7-115 Your SLC c
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Control EN TO Status Flag EW ST ER
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Control Flag EN TO Status Flag EW S
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Bit Number Octal 17 10 7 Bit Number
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Block Transfer Read Control Logic E
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RIO Block Transfer 7-125 Rung 2:3 W
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RIO Block Transfer 7-127 Rung 2:1 C
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Directional Continuous Block Transf
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Page 131 and 132:
Directional Repeating Block Transfe
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Rung 2:5 Block transfer reads will
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Page 137 and 138:
Bidirectional Continuous Block Tran
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RIO Block Transfer 7-141 When a BTR
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RIO Block Transfer 7-143 Rung 2:9 T
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RIO Block Transfer 7-145 Rung 2:1 C
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Page 147 and 148:
RIO Block Transfer 7-149 Rung 2:10
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RIO Block Transfer 7-151 Rung 2:2 U
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Page 153 and 154:
RIO Block Transfer 7-155 Rung 2:11
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Switchover Considerations Chapter 8
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Switchover Considerations 8-159 Div
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Switchover Considerations 8-161 Dur
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Switchover Considerations 8-163 The
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Programming Techniques Chapter 9 Ch
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Program File 3 0000 0001 0002 0003
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0009 0010 0011 0012 Programming Tec
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0017 Programming Techniques 9-171 T
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0005 0006 0007 0008 0009 0010 0011
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0021 0022 0023 0024 0025 0026 0027
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Programming Techniques 9-177 Data T
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Programming Techniques 9-179 3. For
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Programming Techniques 9-181 The ha
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Programming Techniques 9-183 Howeve
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Backup Scanner Operating Specificat
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Calculating Throughput Specificatio
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Specifications A-189 You need to ca
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Determining T btx All Baud Rates 57
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Specifications A-193 3. Calculate t
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Backup Scanner Output Delay Time (T
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M0-M1 Files and G Files Appendix B
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Monitoring Bit Addresses M0-M1 File
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Access Time M0-M1 Files and G Files
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S:4/8 causes the #M1:4.3 file to up
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M0-M1 Files and G Files B-205 G Fil
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M0-M1 Files and G Files B-207 With
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RIO Configuration Worksheet Appendi
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Glossary The following terms are us
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Glossary 213 Module Status Word (MS
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Numerics 1/2-slot addressing, 1-13,
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minimizing the scan time, B-6 speci
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Index I-ccxix Publication 1747-6.22
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Publication 1747-6.22 — October 1
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