1747-6.22, Backup Scanner User Manual

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6-96 Module Control and Status Word Data Transfer Handshake Word Publication 1747-6.22 The Data Transfer Handshake Word (DTHW) is used in the data table transfer from primary to the secondary system. Each bit corresponds to a block in the 1747-BSN module. When the secondary 1747-BSN receives a new block from the primary system, it writes the block to the M1 area to be read by the secondary SLC 5/0x. The secondary 1747-BSN also sets its corresponding bit in DTSW to advise that this new block is ready to read. After reading the block, the SLC 5/0x must set the corresponding handshake bit in DTHW. Then the 1747-BSN module clears the bit in DTSW. M0:s.3411 15 0 14 0 13 0 12 0 11 0 10 0 9 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 0 DTHW Word Block # 1 Block # 2 Block # 3 Block # 4 Block # 5 Block # 6 Block # 7 Block # 8 Block # 9 Block # 10 Block # 11 Block # 12 Block # 13 Block # 14 Block # 15 Block # 16
Program File 2 0000 0001 0002 Module Control and Status Word 6-97 The following ladder program example shows how to monitor the status bits in the System Status Word (SSW) and in the Module Status Word (MSW) that indicate which processor is in the primary mode and which is in the secondary mode. This information is needed in order to determine whether the local processor needs to execute the primary system or the secondary system HSSL data transfer ladder logic. File 2 monitors the appropriate SSW and MSW bits and executes subroutine 4 if the local system is in primary mode. Note: It is recommended that the M1 and M0 file lengths for the BSN be set to the maximum (5548). There is no memory or speed penalty for creating the maximum buffer size for these files in the BSN modules. Copy the System Status Word (SSW) and the Module Status Word (MSW) from the BSN module to internal storage words in the SLC processor every program scan. Bits 6 and 7 of the SSW word indicate whether this processor is Primary or Secondary at any given time. Bits 6 and 14 of the MSW word indicate whether the local or remote system is in the Primary or Secondary mode respectively. Virtual SSW and MSW words/bits are used to minimize M-file transfers, thereby minimizing their effects on the program scan time. COP Copy File Source #M1:1.3400 Dest #B3:1 Length 2 This rung executes subroutine number 3 when the Local System is in the Secondary Mode. Subroutine 3 contains the logic which must be executed to properly transfer HSSL data from the Secondary BSN Module to the Secondary SLC Processor. Virtual SSW Bit: when = 1, indicates Virtual MSW Bit: Virtual MSW Bit: the local system is when = 1, indicates when = 1, indicates in the Secondary the Local System is the Remote System is Mode in the Primary Mode in the Primary Mode B3:1 B3:2 B3:2 JSR Jump To Subroutine 7 6 14 SBR File Number U:3 This rung executes subroutine number 4 when the Local System is in the Primary Mode. Subroutine 4 contains the logic which must be executed to properly transfer HSSL data from the Primary SLC Processor to the Primary BSN Module. Virtual SSW Bit: Virtual MSW Bit: Virtual MSW Bit: when = 1, the Local when = 1, indicates when = 1, indicates System is in the the Local System is the Remote System is Primary Mode in the Primary Mode in the Primary Mode B3:1 B3:2 B3:2 JSR Jump To Subroutine 6 6 14 SBR File Number U:4 0003 END 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
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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
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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 and 56: Startup Sequencing Operating Your S
Page 57 and 58: Understanding Remote Input and Outp
Page 59 and 60: Scanner Configuration and Programmi
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: Data Transfer Status Word Module Co
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
Page 107 and 108: Example 2 # 2 # 4 # 1 # 2 # 3 # 4 #
Page 109 and 110: M0 File BT Control Buffer Layout BT
Page 111 and 112: Error Code Description RIO Block Tr
Page 113 and 114: RIO Block Transfer 7-115 Your SLC c
Page 115 and 116: Control EN TO Status Flag EW ST ER
Page 117 and 118: Control Flag EN TO Status Flag EW S
Page 119 and 120: Bit Number Octal 17 10 7 Bit Number
Page 121 and 122: Block Transfer Read Control Logic E
Page 123 and 124: RIO Block Transfer 7-125 Rung 2:3 W
Page 125 and 126: RIO Block Transfer 7-127 Rung 2:1 C
Page 127 and 128: Directional Continuous Block Transf
Page 131 and 132: Directional Repeating Block Transfe
Page 133 and 134: Rung 2:5 Block transfer reads will
Page 137 and 138: Bidirectional Continuous Block Tran
Page 139 and 140: RIO Block Transfer 7-141 When a BTR
Page 141 and 142: RIO Block Transfer 7-143 Rung 2:9 T
Page 143 and 144: RIO Block Transfer 7-145 Rung 2:1 C
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RIO Block Transfer 7-147 Rung 2:6 W
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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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RIO Block Transfer 7-153 Rung 2:7 W
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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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