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SCON-25L
Reference Manual
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Visara SCON-25L Reference Manual

SCON-25L/28L/3074 Console Concentrator
1174-25S Communications Server
Hardware Reference Manual
P/N 707028-007
ELUDEHCSNOISIVER/EUSSI
Comments Rev. No. Date
Initial Release 707028-001 9/17/99
Visara Update 707028-002 3/26/01
SCON-3074 Addition 707028-006 5/12/06
ii 707028-007

Read This First

This is the Communications Server Hardware Reference Manual. For information on the LINCS Operating System, please visit our website, www.visara.com.
1. From your Internet browser type http://www.visara.com
2. Select Service and Support
3. Select Manuals
4. Select 1174 LINCS Manual Online
•
SCON-25L/28L/3074/1174-25S Hardware Reference Manual
•
SCON-20L/22L/25L/28L Configuration Manual
•
SCON-3074 Configuration Manual
•
SCON-20L/22L/25L/28L/3074 Planning and Installation Manual
•
LINCS Features
•
LINCS Problem Determination
•
LINCS Configuration
•
LINCS Central Control
707028-007 iii

Product Safety

The 25L/28L/25S/3074 complies with relevant product safety standards, such as the UL and CSA, and TUV-GS Rules and Regulations.

FCC and CDC Regulatory Statements

This equipment has been tested and found to comply with the limits for a Class A computing device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a commercial installation. This equipment generates, uses, and can radiate radio frequency energy, and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by using one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
• Consult the dealer or an experienced radio/TV technician for help.
This equipment has been certified to comply with the limits for a Class A computing device, pursuant to FCC rules. In order to maintain compliance with FCC regulations, shielded cable must be used with this equipment. Operating with unapproved equipment or unshielded cables is likely to result in interference to radio and TV reception. The user is cautioned that changes and modifications made to the equipment without the approval of the manufacturer could void the user’s authority to operate this equipment. The user may find the following booklet prepared by the Federal Communications Commission helpful:
How to Identify and Resolve Radio-TV Interference Problems.
This booklet is available from the U.S. Government Printing Office, Washington DC 20402, Stock No. 004-000-00345-4.
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.
Le présent appereil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le brouillage radioélectrique édicté par le ministère des Communications du Canada.
WARNING
Due to electrical hazard, do not remove the system cover. Only qualified service personnel may remove the system cover for service or installation of circuit cards.
iv 707028-007
Table of Contents
Page
Read This First ........................................................................................................... iii
Product Safety .................................................................................................. iv
FCC and CDC Regulatory Statements ............................................................. iv
Chapter 1. Introduction ............................................................................................ 1-1
SCON-25L General Description ................................................................... 1-1
SCON-28L General Description ................................................................... 1-1
SCON-3074 General Description .................................................................. 1-1
1174-25S General Description ...................................................................... 1-1
TN3270E Server........................................................................................ 1-2
Communications Concentrator .................................................................. 1-2
Coax Terminal Server ................................................................................ 1-2
LAN Printer Support ................................................................................. 1-2
Additional LAN Device Support............................................................... 1-2
IP Channel Bridge ..................................................................................... 1-2
Hardware Components .................................................................................. 1-3
Standard Components ............................................................................... 1-3
Feature Components.................................................................................. 1-3
Chapter 2. Installation ............................................................................................. 2-1
Installation Checklist ..................................................................................... 2-1
Memory ......................................................................................................... 2-2
Requirements............................................................................................. 2-2
Additional Memory ................................................................................... 2-2
Printed Circuit ............................................................................................... 2-3
Unpacking Additional Printed Circuit Boards (PCBs) .............................. 2-3
Installing/Removing Printed Circuit Boards (PCBs) --
by Authorized Service Personnel Only ..................................................... 2-3
Location Planning for the 25S/25L/28L/3074 ............................................... 2-4
Environmental Parameters......................................................................... 2-4
Power Requirements ................................................................................. 2-4
Supplied Cable Distances .......................................................................... 2-5
Power Cable Requirements............................................................................ 2-7
Serial 3270 Host Connection ......................................................................... 2-8
Token Ring Connection ................................................................................. 2-8
Ethernet Connection ...................................................................................... 2-8
10/100 Mbps Ethernet ............................................................................... 2-8
10BASE-T Operation ................................................................................ 2-8
100BASE-TX Operation ........................................................................... 2-9
LED Descriptions .................................................................................... 2-10
Local Channel Installation ........................................................................... 2-10
Switches/Indicators ................................................................................. 2-10
Cables ...................................................................................................... 2-11
Preparing for Installation......................................................................... 2-11
Connecting to the Channel ...................................................................... 2-11
Channel Board Installation ...................................................................... 2-14
Bus/Tag Cable Interfacing Assembly ...................................................... 2-14
Setting the Priority on the BTC ............................................................... 2-15
BTC-C Cabling ....................................................................................... 2-15
Local Channel Bypass ............................................................................. 2-16
707028-007 v
SCON-25L/28L/3074 Console Concentrator 1174-25S Communications Server Hardware Reference Manual
ESCON Channel Interface........................................................................... 2-17
Indicators, Switches and Connectors ...................................................... 2-17
Attaching the ESC/ESX Interface to the Channel ................................... 2-18
RS232 Serial Interface ................................................................................. 2-18
Serial Port ................................................................................................ 2-18
High Speed Communication Interface......................................................... 2-19
Installation ............................................................................................... 2-19
Cabling .................................................................................................... 2-19
Slot Numbers ............................................................................................... 2-20
Slot Identification .................................................................................... 2-21
Board Slot Population.................................................................................. 2-21
Chapter 3. Operation ............................................................................................... 3-1
Controls ......................................................................................................... 3-1
Operator Panel ............................................................................................... 3-1
Indicators ................................................................................................... 3-1
Keypad ...................................................................................................... 3-2
IML ................................................................................................................ 3-4
Error Types .................................................................................................... 3-5
IML Errors (ERR___) ............................................................................... 3-6
Exception Errors (XCP___) ...................................................................... 3-6
Hardware Failures (FAIL___) ................................................................... 3-7
Online Errors ............................................................................................. 3-7
Error Indicators ......................................................................................... 3-7
Software Merge ............................................................................................. 3-8
Page
Chapter 4. Assembly Removal/Replacement .......................................................... 4-1
Introduction ................................................................................................... 4-1
Assembly Drawing ........................................................................................ 4-1
Field Replaceable Assemblies ....................................................................... 4-2
Removal/Replacement Procedures ................................................................ 4-3
Main Cover................................................................................................ 4-3
Circuit Board Assembly ............................................................................ 4-4
Operator Panel ........................................................................................... 4-4
Floppy Disk Drive ..................................................................................... 4-5
Hard Disk Drive ........................................................................................ 4-5
Power Supply Assembly............................................................................ 4-6
Back Panel and Expansion Back Panel Assembly .................................... 4-7
New Hardware Installation Procedures ......................................................... 4-7
Selecting Location for the New Board ...................................................... 4-8
Board Installation Procedure ..................................................................... 4-8
Index .................................................................................................................. Index-1
vi 707028-007

Chapter 1. Introduction

SCON-25L General Description

The SCON-25L Console Concentrator is a powerful platform for supporting and managing multiple logical partitions (LPARS) on mainframe hosts. The SCON-25L attaches to mainframes via one or two ESCON adapters and is used to configure and monitor mainframe status. Up to 16 LPARS and 256 sessions can be supported through each interface. The SCON-25L Console Concentrator supports LINCS software and is part of the Visara Communication Server Hardware family. Client types supported on the 25L include up to 128 Coax displays and printers, up to 512 TN3270E clients, and up to 256 Telnet and/or LAN printer clients.

SCON-28L General Description

The SCON-28L Console Concentrator is a powerful platform for supporting and managing multiple logical partitions (LPARS) on mainframe hosts. The SCON-28L attaches to a mainframe via one or two ESCON adapters, and is used to configure and monitor the mainframe status. Up to 64 LPARS and 256 sessions can be supported through each interface (20 LPARs/ESCON come standard). The SCON-28L Console Concentrator supports LINCS software and is part of the Visara Communication Server Hardware family. Client types supported on the 28L include up to 128 Coax displays and printers, up to 512 TN3270E clients, and up to 256 Telnet and/or LAN printer clients.

SCON-3074 General Description

The SCON-3074 Console Concentrator is a powerful platform for supporting and managing large numbers of LPARs on mainframe hosts. The SCON-3074 attaches to a mainframe via one or two ESCON adapters, and is used to configure and monitor the mainframe status. Up to 48 LPARs and 128 sessions can be supported through each interface. The SCON-3074 Console Concentrator supports LINCS software and is part of the Visara Communication Server Hardware family. Client types supported on the SCON-3074 are up to 128 TN3270E, TN3270, and TN3287 clients, connected through a pair of 10/100 Mbps Ethernet connections. Configuration and management of the SCON­3074 is through the network using a Telnet connection.

1174-25S General Description

The 1174-25S Communication Server provides a number of communication services to provide desktop to mainframe, mainframe to printer, and mainframe to server connections. A wide variety of communication options and device attachments allows the 25S to take on many roles. A few of the more common applications are described below. For more information describing the features mentioned below, refer to the LINCS Planning, Configuration, and Central Control Manuals.
707028-007 1-1
SCON-25L/28L/3074 Console Concentrator 1174-25S Communications Server Hardware Reference Manual

TN3270E Server

The 1174-25S functions as a TN3270E server, providing user desktops with access to a 3270 mainframe. The number of sessions supported can be scaled from 32 - 4048. With the implementation of multiple 25S communication servers and the SMS feature, the TN3270E server function can be spread across multiple platforms, encompassing tens of thousands of users, and providing fault tolerance and load balancing as well.

Communications Concentrator

With the implementation of the SNA Gateway features, the 1174-25S can be used to gateway SNA communications across a variety of communication links including ESCON, Bus and Tag channel, 100/10 Mbps Ethernet, 16/4 MBPS Token Ring, and synchronous serial connections (RS232, V.35, X.21) up to T1/E1 speeds. Standard SNA as well as APPN is supported. Numerous card slots available in the 25S allow extremely dynamic and complex networks to be accommodated. Using the gateway functions provided by the 25S, it is easy to supplement and in some cases replace more expensive Front End Processors. Downstream connections include Token Ring, Ethernet, Frame Relay, and SDLC over a variety of serial connections and speeds.

Coax Terminal Server

The 25S supports up to 128 traditional fixed function coax terminals and printers, allowing up to 10 host sessions per terminal. Connections can be made using RG62AU coax or twisted pair. Host connections to SNA hosts can be over ESCON, Bus and Tag channel, Ethernet, Token Ring, SDLC, X.25 and Frame Relay. Non-SNA connections over ESCON, Bus and Tag channel, and BSC lines are also supported.

LAN Printer Support

Up to 256 LAN printers can be supported through the 1174-25S, providing mainframe to LAN printer connections. Traditional SNA printer definitions are converted to IP data streams which are then directed to the appropriate LAN printer, anywhere in the network. LPR/LPD protocol as well as the simpler socket connection method is supported.

Additional LAN Device Support

In addition to the device types listed above, the 25S can also support Telnet desktops (up to 256), and IPX desktops (up to 4048), providing desktop to mainframe application support.

IP Channel Bridge

The 1174-25S can be configured to provide high speed LAN to mainframe communications for IP traffic, using efficient bridging technology, and some filtering capabilities more commonly found in routers.
1-2 707028-007

Hardware Components

The following includes hardware, which may be installed.

Standard Components

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Chapter 1. Introduction
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4703

Feature Components

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707028-007 1-3

Installation Checklist

The following is a brief checklist of typical installation tasks. Detailed information is provided later in this chapter.
1. Check the shipping carton for any obvious shipping damage prior to unpacking.
2. Unpack the unit per instructions provided with the shipping carton. This unit weighs in excess of 50 lbs., so please take any necessary precautions such as seeking help with lifting.
3. Place the unit in an appropriate location. Refer to “Environmental Parameters.”
4. Remove the cardboard protector (if present) from the disk drive. The unit should not be powered on with a cardboard protector in the disk drive or the disk drive may be damaged.
5. Inspect the unit for any physical damage.
6. Install (if required) and connect 3270 COAX, ESCON, Local Channel, Token Ring, RS232, V.35 and/or Ethernet cables as needed.

Chapter 2. Installation

7. Ensuring that the Power switch on the front of the unit is off, plug the unit into an appropriate AC outlet.
8. Turn the unit on (see Chapter 3, “Operation”). After a few seconds, messages will appear on the LCD of the Operator Panel. These messages will change as the unit proceeds through various IML states until it has completed the boot up procedure. When the boot has completed, the word ‘CONFIGURATION’ should appear on the LCD. This initial boot process should take a few minutes (less than 10). If the boot process has not completed, or if you see a message that begins ‘ERR’ or ‘XCP’, then a failure of the boot process has occurred. If a failure of the boot process occurs, you will want to contact your Service Provider or the Visara Intellicenter for assistance. Removal of the covers by unauthorized persons can void your warranty.
9. Configure the unit for use (see the LINCS Planning, Configuration, and Central Control Manuals).
707028-007 2-1
SCON-25L/28L/3074 Console Concentrator 1174-25S Communications Server Hardware Reference Manual

Memory

Requirements

The total amount of system addressable memory space across the bus is 27.5 Mb. The unit comes standard with a full compliment of 8 Mb of common memory. Each feature board installed contributes additional system memory. Configurations exceeding 27.5 Mb are not supported.
The amount of memory address space each feature board requires is:
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* The FET contributes either 2 MB or 4 MB of memory depending on the feature combination configured.

Additional Memory

Memory is installed on the SCP card (slot 1) using 4-Mb memory modules. Local memory is installed in J5, and 4 MB of Base Common memory in J6. Expansion Common memory J7 is not used (see Figure 2-1). The other 4 MB of Base Common memory is located on the VHP card, typically located in slot 2.
Figure 2-1. Memory Module Location, SCP Board
Local Memory
Not used
Base Common Memory
2-2 707028-007

Printed Circuit

Some of the optional features require the installation of additional printed circuit boards.
WARNING
Due to electrical hazard, do not remove the system cover. Only qualified service personnel may remove the system cover for service or installation of circuit cards.

Unpacking Additional Printed Circuit Boards (PCBs)

Follow these steps when you receive the shipment:
1. Inspect the carton for physical damage prior to unpacking.
2. If your PCBs packaging appears to have been damaged in shipment, please do not open it. Rather, you should report the damage to the carrier upon delivery. If you determine that your PCBs have concealed damage when you open the package, report the damage to your carrier as soon as possible. In both situations, you should also call Visara Customer Service to report the problem. Call 1-888-334-4380 or 1-919-882-0200.
Chapter 2. Installation
3. If you are unsure of who is providing your warranty or maintenance service, then call the Visara Intellicenter.
4. If your PCBs fails to work properly during its initial installation or within 48 hours, please call the Visara IntelliCenter to report the problem. Call 1-888-334-4380 or 1-919-882-0200.
5. If no damage is noted, carefully remove and unpack the package contents. Install the printed circuit board(s) as described below.

Installing/Removing Printed Circuit Boards (PCBs) -- by Authorized Service Personnel Only

Each Circuit board assembly is plugged into connector slots on the Mother board and fastened to the chassis with a mounting screw.
1. Ensure power is off and disconnect AC power.
2. Remove the cover.
3. Remove the mounting screw and slot cover from the selected slot.
4. Slide the board into place and ensure the connector is seated properly.
5. Secure the board into place by installing the mounting screw (removed in Step 3).
6. Connect all required cables to the Circuit board installed.
7. Reinstall the cover.
8. Reconnect AC power and turn the unit on.
It is required that any empty slot have a slot cover installed to provide proper ventilation.
707028-007 2-3
SCON-25L/28L/3074 Console Concentrator 1174-25S Communications Server Hardware Reference Manual

Location Planning for the 25S/25L/28L/3074

Use the following environmental parameters, power requirements, and cable distance tables to select a location for your 25S/25L/28L/3074.

Environmental Parameters

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Power Requirements

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2-4 707028-007

Supplied Cable Distances

The following table contains distance information for some types of cable:
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Chapter 2. Installation
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Figure 2-2. Coax Device Cable Types and Lengths
707028-007 2-5
SCON-25L/28L/3074 Console Concentrator 1174-25S Communications Server Hardware Reference Manual
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When using fiber optic cable, a Fiber Optic Device Adapter must be installed in the Communications Server. Note that when using Type 3 media, a connector with a special actuator and filter (such as IBM’s DPC-T3) is required in order to connect devices equipped with a DPC. Otherwise, a Balun assembly is used.
The following limitations apply to the use of these devices:
1. (coax length) + (5 * twisted pair length) <= 4500 ft (1375 m)
2. (minimum twisted pair length) => 100 ft (30.5 m)
Additional information about cable types and distances is available in the following Publications:
• Using the IBM Cabling System with Communication Products, GA27-3620
• IBM Cabling System Planning and Installation Guide, GA27-3361
• IBM System/360 and System/370 I/O Interface Channel to Unit Original Equipment
Manufacturers’ Information, GA22-6974
• A Building Planning Guide for Communication Wiring, G320-8059
• IBM Enterprise Systems Architecture/390, ESCON I/O interface, and Physical Layer
specification SA23-0394
2-6 707028-007
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