IBM 5079, 578, 5078 manual Connecting your 5074 to the middle of a loop

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Connecting your 5074 to the middle of a loop

Use this procedure if you are connecting your 5074 to the middle of a loop. In other words, you are connecting your 5074 between two other expansion units. Refer to these expansion units as unit X and unit Y as is shown in Figure 8 and Figure 9.

Figure 8. HSL connections

Figure 9. SPCN connections

__

1.

Remove the back cover from unit X, unit Y, and your 5074. See

 

 

Appendix A, “Removing the back covers” on page 31 if you need

 

 

instructions.

__

2.

At unit Y remove the SPCN cable from connector J15.

__

3.

At unit Y remove the HSL cable from connector 0.

__

4.

Connect the cables to your 5074. See Appendix B, “Connector Locations” on

 

 

page 35 if you need information about finding connectors.

 

 

__ a. Connect a new HSL cable to HSL connector 1.

 

 

__ b. Connect a new SPCN cable to connector J16.

 

 

__ c. Connect the power cable. Do not plug into the wall outlet.

__

5.

Connect the HSL cable from unit X to the HSL connector 0 on your 5074.

 

 

This cable now runs between unit X and your 5074.

__

6.

Connect the SPCN cable from unit X to the SPCN connector J15 on your

 

 

5074. This cable now runs between unit X and your 5074.

__

7.

Connect the HSL cable that you installed to connector 1 on your 5074 from

 

 

your 5074 to connector 0 on unit Y.

__

8.

Connect SPCN cable that you installed to connector J16 on your 5074 to

 

 

connector J15 on your unit Y.

__

9.

Install or close the back cover of your 5074, unit X, and unit Y.

__ 10.

Go to Chapter 5, “Completing your installation” on page 27.

Chapter 2. Setting up your 5074 expansion unit 13

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Contents ERserver Page ERserver Third Edition August Contents Page Safety and Environmental Notices Environmental Design Laser Safety InformationBattery Return Program Product Recycling and DisposalISeries Navigator Who should read this bookPrerequisite and related information How to send your comments Site planning considerations for Preparing to set up your 5074 or 5079 Expansion UnitHardware requirements Planning your cable layout Identifying HSL and Spcn CablesPlacing power cords for Planning for redundant link with two expansion units System or expansion unit Configuration rules Configuration rulesPowering down your iSeries system unit Preparing to set up your 5074 or 5079 Expansion Unit Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Connecting your 5074 directly to your system unit Setting up your 5074 expansion unitConnecting your 5074 to another expansion unit HSL connections Connecting your 5074 at the beginning of a loopRemove or open the back cover from your 5074. See Appendix a Connecting your 5074 to the middle of a loop Connecting your 5074 to the end of a loop Connecting your 0578 directly to your system unit Setting up your 0578 expansion unitSetting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Setting up your 0578 expansion unit Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Connecting your 5079 directly to your system unit Setting up your 5079 Expansion UnitHSL Connections Setting up your 5079 Expansion Unit Connecting your 5079 at the beginning of a loop Connecting your 5079 to another expansion unitConnectors Connecting your 5079 in the middle of a loop Connecting your 5079 to the end of a loop Connect the HSL cable that you installed in b to HSL Yes No Completing your installationSetting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Verifying Your New Configuration Frame Unit Type Number Fault 00-00000 5074, 830 and 890 back cover Appendix A. Removing the back covers820 back cover Open the back cover on your 5079 by pressing the latch at 840 back coverOpening the 5079 and 840 back cover Accessing units in a rack HSL connector locations Appendix B. Connector LocationsHSL connector locations Appendix B. Connector Locations HSL connector locations Connector locations Connector locationsConnector locations Connector locations Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Appendix C. System unit control panel Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 System unit Rule HSL loop with HSL loop with four external units Spcn loop with HSL loop with Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 Copyright IBM Corp IBM TrademarksPage Industry Canada Compliance Statement Electronic Emission NoticesIndustry Canada Compliance Statement Setting up your 0578, 5074, 5078 or 5079 Expansion Unit V5R2 How satisfied are you that the information in this book is Readers’ Comments We’d Like to Hear from YouBusiness Reply Mail Page SA41-5149-02

5078, 5079, 578, 5074 specifications

The IBM 5074, 578, 5079, and 5078 are part of IBM's influential line of midrange computer systems that emerged during the late 1970s and early 1980s. These models were pivotal in the evolution of business computing at a time when companies were increasingly adopting automated systems for data processing tasks.

The IBM 5074, also known as the IBM 5100 Series, was particularly notable for being one of the first portable computers, offering a versatile computing environment for both technical and business applications. It featured an impressive combination of hardware and software capabilities, including a built-in keyboard, a screen, and the ability to run various programming languages. Both APL and BASIC were readily available, making it a popular choice for developers and mathematicians alike.

The 578 model was an advanced variant of the 5074, emphasizing enhanced performance and expanded memory capacity. The 578 integrated more sophisticated I/O capabilities, which included diverse connection options for external devices. This system was geared toward small and medium enterprises requiring robust computing power without the complexities of mainframe management.

The IBM 5079, on the other hand, distinguished itself with its unique multi-user capabilities, allowing for simultaneous access by multiple users. This built-in support for multitasking made it a formidable tool in office environments where collaboration and efficient resource sharing were paramount. Its operating system was designed to optimize performance across various applications, facilitating smoother operations in busy work environments.

Lastly, the IBM 5078 served as a bridge between traditional minicomputers and the growing demand for microcomputing solutions. It included critical innovations in processing speed and data handling capabilities, allowing businesses to better manage their operations. With a focus on reliability and uptime, the 5078 was engineered for critical business functions that demanded robust performance in a pragmatic package.

Together, these models underscored IBM's commitment to innovation and adaptability in the computing landscape of the late 20th century. They set the groundwork for future advancements in personal computing and enterprise systems, influencing generations of technology that followed. Their legacy is a testament to the evolution of computing technology, showcasing concrete advancements in capability, efficiency, and user accessibility.
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