1747-6.22, Backup Scanner User Manual

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A-188 Specifications Publication 1747-6.22 RIO Scan Time Calculation (T RIO ) The RIO scan time is calculated by identifying the baud rate and image size of each logical device on the RIO link. Locate the corresponding time value in the following table. If you are using multiple logical devices, add the time values together to determine the total RIO scan time (T RIO ). T RIO = T adapter 1 + T adapter 2 + T adapter 3 Adapter Size 1/4 logical rack 1/2 logical rack 3/4 logical rack Full logical rack RIO Scan Times for Adapters Baud Rate 57.6K 115.2K 230.4K 6.0 ms 3.5 ms 2.5 ms 6.5 ms 4.0 ms 2.75 ms 7.5 ms 4.5 ms 3.0 ms 9.5 ms 5.5 ms 3.5 ms Example Discrete I/O Throughput without Block Transfers Present An SLC 5/03 is controlling an RIO link running at 115.2K baud that has the following adapters: • One 1747-ASB module is configured as a 1/2 logical rack starting at logical rack 0. I/O chassis slot 1 contains 1746-IB16, 16 point input module I/O chassis slot 2 contains 1746-OB16, 16 point output module • Two adapters are each configured as full logical racks (logical racks 1 and 2). • Three adapters are each configured as 1/4 logical racks (logical rack 3).
Specifications A-189 You need to calculate your T dm-nbt : the RIO throughput time from when the input closes on the 1746-IN16 until the output on the 1746-OB16 is on. 1. Use the throughput formula to calculate the maximum throughput. T dm-nbt = 2T ps + 2T RIO + T adp + T SNo + T SNi + T id + T od T ps = 25.0 ms T RIO = The total RIO scan time (ms) T SNo = See value in the table on page B-13, TSNo without M0 File Writes (Normal Mode). T SNi = 5.0 ms T id = 10.0 ms, which is from I/O module instruction sheets T od = 1.0 ms, which is from I/O module instruction sheets T dm-nbt = 2(25.0) + 2T RIO + 8.0 + T SNo + 5.0 + 10.0 + 1.0 2. Calculate the total RIO scan time (T RIO). Locate the baud rate (115.2K) and adapter size, which is found in the table on page B- 4. Multiply the RIO scan times listed under the 115.2K heading by the number of each different type of rack that you have. Add those numbers together: T RIO = T adapter 1 + T adapter 2 + T adapter 3 T RIO = 1(4.0 ms) + 2(5.5 ms) + 3(3.5 ms ) T RIO = 25.5 ms 3. Find T SNo on page B-13 in the table T SNo without M0 File Writes (Normal Mode). For this example T upd > T hold , and there are 4 logical racks configured. Therefore: T SNo = 7.0 ms 4. Substitute all the values for variables in the throughput formula and solve for throughput: T dm-nbt = 2T ps + 2T RIO + 2T bp + T SNo + T SNi + T id + T od T dm-nbt = 2(25.0)+ 2(25.5) + 8.0 + 7.0 + 5.0 + 10.0 + 1.0 T dm-nbt = 132.0 ms = maximum throughpu t 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
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Conventions Used in This Manual The
Page 15 and 16:
Overview This chapter contains the
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Local I/O Remote I/O Processor I/O
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SLC and Scanner Asynchronous Operat
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RIO Logical Rack 0 RIO Logical Rack
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Physical and Logical RIO Link Speci
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Overview 1-27 Complementary I/O: Pl
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Overview 1-29 Complementary I/O: Pl
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Slot Pair I O I O I O I O 0 1 2 3 4
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Hardware Features Overview 1-33 Not
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Module Address Switch Overview 1-35
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A Typical SLC 500 Backup Configurat
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Overview 1-39 Data table values are
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Required Tools and Equipment Chapte
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5. Configure the system. Quick Star
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Configuration Selection Installatio
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Backup Scanner Installation Install
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Installation and Wiring 3-49 Termin
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Chapter 4 Operating Your SLC 500 Ba
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(1) Operating Your SLC 500 Backup S
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Operating Your SLC 500 Backup Syste
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Startup Sequencing Operating Your S
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Understanding Remote Input and Outp
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Page 61 and 62:
Rules for Configuring the Scanner G
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Logical Rack 0 Logical Rack 1 Logic
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Considerations When Configuring Rem
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Output Reset Control Device Inhibit
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M0 File - RIO Device Reset Control
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Page 75 and 76:
M1 Status File Description General
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Logical Device Starting Address Sta
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Logical Device Fault Status M1 (Sta
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Primary Logical Device Address, Wor
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SLC/Scanner Configuration Scanner C
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Chapter 6 Module Control and Status
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Module Control and Status Word 6-91
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Transferring Data over the High-Spe
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Data Transfer Status Word Module Co
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Program File 2 0000 0001 0002 Modul
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Program File 4 0000 0001 0002 0003
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Module Status Counters Module Contr
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RIO Block Transfer Theory of Operat
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SLC Processor ➀ RIO Block Transfe
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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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RIO Block Transfer 7-131 Rung 2:3 W
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Directional Repeating Block Transfe
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Rung 2:5 Block transfer reads will
Page 135 and 136: RIO Block Transfer 7-137 Rung 2:3 W
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
Page 147 and 148: RIO Block Transfer 7-149 Rung 2:10
Page 149 and 150: RIO Block Transfer 7-151 Rung 2:2 U
Page 153 and 154: RIO Block Transfer 7-155 Rung 2:11
Page 155 and 156: Switchover Considerations Chapter 8
Page 157 and 158: Switchover Considerations 8-159 Div
Page 159 and 160: Switchover Considerations 8-161 Dur
Page 161 and 162: Switchover Considerations 8-163 The
Page 163 and 164: Programming Techniques Chapter 9 Ch
Page 165 and 166: Program File 3 0000 0001 0002 0003
Page 167 and 168: 0009 0010 0011 0012 Programming Tec
Page 169 and 170: 0017 Programming Techniques 9-171 T
Page 171 and 172: 0005 0006 0007 0008 0009 0010 0011
Page 173 and 174: 0021 0022 0023 0024 0025 0026 0027
Page 175 and 176: Programming Techniques 9-177 Data T
Page 177 and 178: Programming Techniques 9-179 3. For
Page 179 and 180: Programming Techniques 9-181 The ha
Page 181 and 182: Programming Techniques 9-183 Howeve
Page 183 and 184: Backup Scanner Operating Specificat
Page 185: Calculating Throughput Specificatio
Page 189 and 190: Determining T btx All Baud Rates 57
Page 191 and 192: Specifications A-193 3. Calculate t
Page 193 and 194: Backup Scanner Output Delay Time (T
Page 195 and 196: M0-M1 Files and G Files Appendix B
Page 197 and 198: Monitoring Bit Addresses M0-M1 File
Page 199 and 200: Access Time M0-M1 Files and G Files
Page 201 and 202: S:4/8 causes the #M1:4.3 file to up
Page 203 and 204: M0-M1 Files and G Files B-205 G Fil
Page 205 and 206: M0-M1 Files and G Files B-207 With
Page 207 and 208: RIO Configuration Worksheet Appendi
Page 209 and 210: Glossary The following terms are us
Page 211 and 212: Glossary 213 Module Status Word (MS
Page 213 and 214: Numerics 1/2-slot addressing, 1-13,
Page 215 and 216: minimizing the scan time, B-6 speci
Page 217 and 218: Index I-ccxix Publication 1747-6.22
Page 219: Publication 1747-6.22 — October 1
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1747-6.22, Backup Scanner User Manual

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