Configuring the 5394 Control Unit for SDLC

Resolving The Problem

This document describes how to configure your control unit. You can complete the following tasks using the information in this chapter:

o	Display the configuration screen.
o	Determine the settings for each configuration field.
o	Enter and save configuration data.
o	Change your system configuration.
o	Solve problems that may occur during configuration.

Configuring without All Work Stations Attached

The instructions in this document tell you how to configure the IBM 5394 with all workstations attached. If, however, you are configuring several control units at a central site or if you cannot yet attach all your workstations, you can configure the IBM 5394 with only one display station attached. In this case, all workstations that you plan to attach must use the same keyboard code (country character set).

To configure without all work stations attached, connect one display station and follow the instructions in this document. This display station cannot be one of the following:

o	IBM PC or Personal System/2 using IBM® AS/400® PC Support
o	IBM PC AS or Personal System/2 using IBM® OS/2® Extended Edition
o	IBM Personal System/55 using 5250 PC/2 AD Support

You can use an IBM PC, Personal System/2, or Personal System/55 using a 5250 emulation program.

When you later attach and power on all work stations, the IBM 5394 will automatically recognize the presence of each work station. If any problems occur at this time, follow the instructions beginning at the Beginning Configuration step to make sure that the control unit is recognizing all the work stations.

Before You Begin Configuration

For the initial configuration, you need the following:

o	The nearest and most convenient attached display station; however, do not use the following: - IBM PC or Personal System/2 using AS/400 PC Support - IBM PCAS or Personal System/2 using OS/2 Extended Edition - IBM Personal System/55 using 5250 PC/2 AD Support
o	An IBM PC/ Personal System/2, or Personal System/55 using a 5250 emulation program.
o	The test key sequence for your keyboard. You use this sequence to display the configuration screen.

Beginning Configuration

System reference codes (SRCs) may appear on the display screen during the configuration procedure. If a blinking four- or six-digit SRC appears on the screen, please reference the 5394 Remote Control Unit User's Guide (GA27-3852) or call support for further assistance.

Step 1: Ensure the control unit power switch is set to off (O).

Step 2: Set all work station power switches to on.

If you are using IBM AS/400 PC Support under DOS on any IBM Personal System/2 or IBM PC, do not start the AS/400 PC Support program until Step 5 of this procedure.

If you are using IBM AS/400 PC Support or 5250 Emulation under OS/2 on any IBM Personal System/2 or IBM PC, do not start either program until Step 5 of this procedure.

If you are using an IBM PC or IBM Personal System/2 with a 5250 emulation program (such as Enhanced 5250 Emulation or System 36/38 Work Station Emulation), set the control unit power switch to on (|) and start the emulation program now.

Note: Work stations that are not powered on will not appear on the configuration screen. See Configuring without All Work Stations Attached above.

Step 3: Ensure the test switch on the IBM 5394 operator panel is set to On.

Step 4: Ensure that the write-protected tab on the system diskette is closed (not write-protected). Insert the system diskette in the diskette drive.

Step 5: Ensure the control unit power switch is set to on (|).

If you are using IBM AS/400 PC Support under DOS, wait for the IBM 5394 Ready indicator to appear and start the IBM AS/400 PC Support program at each IBM Personal System/2 or IBM PC that is running AS/400 PC Support. Wait for the AS/400 PC Support router to complete initializing and become active before proceeding to the next step.

If you are using IBM AS/400 PC Support or 5250 Emulation under OS/2, wait for the IBM 5394 Ready indicator to appear and select the 5250 Emulation option under the OS/2 Communications Manager at each IBM Personal System/2 or IBM PC that is running AS/400 PC Support or 5250 Emulation. Wait for the Communications Manager Logon Screen to appear before proceeding to the next step.

Step 6: Go to the display you are using to configure. When the System Available indicator appears on the screen, press the Test Request key sequence to display the configuration screen.

Note: If you are running a 5250 emulation program, the System Available indicator appears on the host session screen, not on the PC session screen.

If an SRC appears on the display screen after you press these keys, press the Error Reset key and repeat this step.

Step 7: Does the configuration screen appear? (The figure in Step 8 shows a sample configuration screen. Your screen may not look exactly like this one.)

Note: The configuration screen appears only on the display you are using.

Yes - Go to Step 8.

No - Do the following:

o	Set the control unit power switch to off (O) and repeat Steps 1 through 6.
o	If the configuration screen still does not appear, refer to the 5394 Remote Control Unit User's Guide (GA27-3852) or call support for further assistance.

Step 8: The following example shows the SDLC configuration screen. X.25 and X.21 communications modes use the same procedures, but have different entry fields and values. If you have a Model 02, Field 3 has slightly different default values.

Notes:

1.	Field 8 and Field P appear only for Release 2 or later.
2.	Your screen may display a copyright statement in English. The first valid keystroke removes this statement.

Work Station Addresses Port                    0        1        2        3        4        5        6 Numbers        _____________________________________________________________________                0/       D        .        .        .        .        P        .                  1/       D        .        .        .        .        .        .                2/       D        .        .        .        .        .        .      AA->  0     BB->  0      1->  00          2->  01          3->  0 0 0 0 0 0 0          8->  3C 0                                                                                    P->  _ _

o	The upper portion of the screen shows the configuration of the work stations on the three ports.

The Ds and Ps on the configuration screen show the arrangement of the display stations and printers on the ports. In the preceding example, the letter D next to each of the ports shows that display stations are located at address 0 on each port. The letter P under address 5 shows that a printer is on port 0 at address 5.

Notes:

1.	If an E appears on the screen, you have too many work stations attached to the IBM 5394. See the Problem Checklist below.
2.	Work stations that are not powered on will not appear on the configuration screen.
3.	You can attach up to 8 work stations to a Model 01B or 02B connected to an IBM System/36 or IBM System/38. If you attach more than 8 work stations, a D or P appears on the configuration screen; however, the host system will only communicate with the work stations in its configuration table.
4.	The lower portion of the screen contains the operator input fields.

The operator input fields differ depending on the communication mode you are using. The SDLC fields appear as the defaults. If you enter a setting other than 0 in Field AA, the fields change to display either X.25 or X.21 fields.

The default values for SDLC communications mode are shown in the following example. SDLC communications mode uses Fields AA, BB, 1, 2, 3, and for Release 2 or later, Fields 8 and P.

Note: For Model 02, Field 3 has different default values than those shown.

 |                                                                                  |
|  AA-> 0 BB-> 0                                                                  |
|  1-> 00    2-> 01      3-> 0 0 0 0 0 0 0      8-> 3C 0                         |
|                                                                       P-> _ _    |
|__________________________________________________________________________________|

The default values for X.25 communications mode are shown in the following example. X.25 communications mode uses Fields AA, BB, 1, 2, 4, 5, 6, 7, and P.

 |                                                                                  |
|  AA-> 1 BB-> 0                                                                  |
|  1-> 00    2-> 01      4-> 0 2 7      5-> 1 0 0 0 0      6-> 0 0 1 0 0 0 0     |
|  7-> 0A 03                                                                       |
|                                                                       P-> _ _    |
|__________________________________________________________________________________|

The default values for X.21 switched communications mode are shown in the following example. X.21 switched communications mode uses Fields AA, BB, 1, 2, A, B, C, and P.

 |                                                                                  |
|  AA-> 2 BB-> 0                                                                  |
|  1-> 00    2-> 01      A-> _______________      B-> 05 6 0                     |
|  C-> __ __ __ __ __ __ __ __                                                     |
|                                                                       P-> _ _    |
|__________________________________________________________________________________| 

Step 9: Does D or P appear on the screen for each attached work station that is powered on?

Yes - Go to Step 10.

No - Go to Problem Checklist.

Step 10: Locate the cursor on your display screen. It is under the number 0 in Field AA.

Step 11: Field AA contains the setting for the communications mode. See the following table for the correct setting for your system.

Press the Cursor Up or Cursor Down key to scroll to the correct setting. Press the Cursor Right key to move to Field BB.

Note: If you are using an X.21 line, your communications mode can be X.21 switched or SDLC.

Communications Mode	Field AA Setting
SDLC	0
X.25	1
X.21 Switched (Model 02 only)	2

Step 12: Field BB contains the setting for the operation mode. The operating mode is determined by the type of the host system you are using. See the following table for the correct setting for your system.

Operating Mode	Field BB Setting
AS/400 (IBM 5394 Mode)	0
AS/Entry, System/36, and System/38 (IBM 5294 Emulation Mode)	1

Scroll to the correct setting, and press the Cursor Right key to move to Field 1.

Step 13: Field 1 contains the keycode.

o

If all the display stations keyboard code, scroll to that code in Field 1. Move the cursor to Field 2 and go to Step 16.

o

If all the display stations do not have the same keyboard code, do the following: a In Field 1, scroll to the keyboard code that is used on most display stations in your configuration. Notes: 1 This code must be a multinational keyboard code. 2 If no keyboard code represents a majority of the keyboard codes used on your display stations, use any multinational keyboard code in your configuration. 3 The maximum number of multinational keyboard codes that can be selected for any configuration is four. b Press the Enter key twice to store the setting. Go to Step 14.

Step 14: Find the port number and work station address of any remaining display stations with a different keyboard code.

To enter the keyboard codes, do the following:

a Press the Cursor Right or Cursor Left key to move the cursor under the second position of Field 1.

 |                                                                                  |
|  AA-> 0 BB-> 0                                                                  |
|  1-> 05 - -   2-> 01      3-> 0 0 0 0 0 0 0      8-> 3C 0                        |
|                                                                       P-> _ _    |
|__________________________________________________________________________________|

b Press the Cursor Up or Cursor Down key to scroll to the correct keyboard code for the display station.

 |                                                                                  |
|  AA-> 0 BB-> 0                                                                  |
|  1-> 17 - -   2-> 01      3-> 0 0 0 0 0 0 0      8-> 3C 0                        |
|                                                                       P-> _ _    |
|__________________________________________________________________________________|

c Press the Cursor Right key to move the cursor under the first dash next to Field 1 on the display screen.

 |                                                                                  |
|  AA-> 0 BB-> 0                                                                  |
|  1-> 17 - -   2-> 01      3-> 0 0 0 0 0 0 0      8-> 3C 0                        |
|                                                                       P-> _ _    |
|__________________________________________________________________________________|

d Press the Cursor Up key to scroll to the port number of the display station.

 |                                                                                  |
|  AA-> 0 BB-> 0                                                                  |
|  1-> 17 0 -   2-> 01      3-> 0 0 0 0 0 0 0      8-> 3C 0                        |
|                                                                       P-> _ _    |
|__________________________________________________________________________________|

e Press the Cursor Right key to move the cursor under the second dash.

 |                                                                                  |
|  AA-> 0 BB-> 0                                                                  |
|  1-> 17 0 -   2-> 01      3-> 0 0 0 0 0 0 0      8-> 3C 0                        |
|                                                                       P-> _ _    |
|__________________________________________________________________________________|

f Press the Cursor Up key to scroll to the address of the display station.

 |                                                                                  |
|  AA-> 0 BB-> 0                                                                  |
|  1-> 17 0 0   2-> 01      3-> 0 0 0 0 0 0 0      8-> 3C 0                        |
|                                                                       P-> _ _    |
|__________________________________________________________________________________|

g Press the Enter key. The keyboard code should appear beside the correct D on the display screen.

Work Station Addresses Port                    0        1        2        3        4        5        6 Numbers        _____________________________________________________________________                0/       D17      .        .        .        .        P        .                  1/       D        .        .        .        .        .        .                2/       D        .        .        .        .        .        .      AA->  0     BB->  0      1->  00          2->  01          3->  0 0 0 0 0 0 0          8->  3C 0                                                                                     P->  _ _

Step 15: Does the keyboard code appear beside the correct D on you display screen?

Yes - Press the Enter key again to store the information on the system diskette. Repeat Step 14 for any other display stations that use a different keyboard code than that you entered in Step 13.

When you have entered all the keyboard codes, move the cursor to Field 2, and go to Step 16.

No - Do the following:

a	Press the Error Reset key and repeat Step 14.
b	If the keyboard code is still not correct, please reference the 5394 Remote Control Unit User's Guide (GA27-3852) or call support for further assistance.

Step 16: Field 2 contains the control unit address (station address). This address is a two-digit hexadecimal number.

Use the cursor keys to scroll to the correct setting in Field 2. Move the cursor to the next field.

Completing Configuration for the SDLC Communications

If you are using SDLC communications mode and you entered a 0 in Field AA you must complete Field 3. If your IBM 5394 is Release 2 or later and you are configuring for V.25 bis auto-dial, you must also complete Field 8. If you want to configure a printer for local copy-to-printer operations (Release 2 or later), complete Field P. Each field contains several subfields.

Press the Cursor Up or Down key to scroll the options in each subfield. After you enter information, press the Cursor Right key to move to the next subfield.

Field 3 (Communication Field)

Field 3 contains the settings for your modem configuration data. To complete the seven subfields of Field 3, continue with Step 17.

Step 17: Subfield 1 selects nonswitched, switched, or auto-dial switched (V.25 bis) operations. Enter the correct setting for this subfield from the following table:

Line Type	Subfield 1 Setting
Nonswitched	0
Switched (not using a modem configured for V.25 bis)	1
Auto-dial switched (using a modem configured for V.25 bis)	2

Notes:

1.	If your IBM 5394 is a Model 02, this subfield defaults to 0 and cannot be changed.
2.	For Release 1, you can select either nonswitched (0) or manual-dial switched (1).

Step 18: Subfield 2 selects whether your modem is set to full-duplex or half-duplex. Enter the correct setting for this subfield from the following table:

Duplex	Subfield 2 Setting
Half-duplex	0
Full-duplex	1

Note: If your IBM 5394 is a Model 02, this subfield defaults to 1 and cannot be changed.

Step 19: Subfield 3 selects either a multipoint or point-to-point communication line. Enter the correct setting for this subfield from the following table.

Note: If you are using a modem that provides DTE interface fan-in/out, and you are using a point-to-point line to attach several control units to your host system, configure each control unit for multipoint communication.

Multipoint or Point-to-Point	Subfield 3 Setting
Multipoint (or fan-in/out)	0
Point-to-point	1

Note: If subfield 2 is set to full-duplex and subfield 3 is set to point-to-point, your modem must be configured to provide constant RFS signal. The IBM 5394 set RTS permanently on.

Step 20: Subfield 4 selects either non-return to zero inverted (NRZI) or non-return to zero (NRZ). NRZI is recommended for an IBM® EIA™/CCITT interface with analog modems or DCEs. NRZ is recommended for digital DCEs. This field must match your host configuration for NRZ/NRZI. Enter the correct setting for this subfield from the following table.

NRZI or NRZ	Subfield 4 Setting
NRZI	0
NRZ (NRZI no)	1

Notes:

1.	If your IBM 5394 is a Model 02, this subfield defaults to 1 and cannot be changed.
2.	If your IBM 5394 is a Model 01 is attached to an X.21 network, enter a 1.

Step 21: Subfield 5 indicates whether your modem uses pin 20 for DTR or CDSTL. Enter the correct setting for this subfield from the following table.

DTR or CDSTL	Subfield 5 Setting
DTR	0
CDSTL	1

Notes:

1.	If you entered a 2 in subfield 1 (V.25 bis), this subfield defaults to 0 and cannot be changed.
2.	In U.S.A. or Canada, enter a 0.
3.	If your IBM 5394 is a Model 02, this subfield defaults to 0 and cannot be changed.

Step 22: Subfield 6 indicates whether the control unit transmits a leading pad character. The pad character is X'00'. For modems or DCEs that require a leading pad character for synchronization, leading pad transmitted should be used with NRZI mode. Enter the correct setting for this subfield from the following table.

Leading Pad	Subfield 6 Setting
Leading pad not required	0
Leading pad required	1

Note: If your IBM 5394 is a Model 02, this subfield defaults to 0 and cannot be changed.

Step 23: Subfield 7 selects local loopback support. If this bit is set to on, the modem or DCE will enter local loopback mode when the Test Control 1 line is active during diagnostic testing. Enter the correct setting for this subfield from the following table.

Local Loopback	Subfield 7 Setting
Local Loopback not supported	0
Local Loopback supported	1

Notes:

1.	If your IBM 5394 is a Model 02, this subfield defaults to 0 and can not be changed.
2.	If you are using a Release 1 system diskette, or if you are not configuring for an auto-dial switched line or a printer, go to Step 28 under Saving Your SDLC Configuration Data.
3.	If you are configuring for an auto-dial switched line and you entered a 2 in the first subfield of Field 3, press the Cursor Right key to move to Field 8 and go to Step 24.
4.	If you are configuring a printer for configuration screen printing go to Step 26.

Field 8 (V.25 bis Parameters)
Field 8 (Release 2 or later) contains the settings for your V.25 bis auto-dial information. To complete the two subfields of Field 8, do the following:

Step 24: Subfield 1 specifies the maximum number of seconds allowed to establish a call connection when using V.25 bis. This setting is a hexadecimal number between X'01' and X'FF'. The default value is 60 seconds (X'3C').

Step 25: Subfield 2 specifies whether the V.25 bis call information will be saved on the diskette and redisplayed the next time an auto-dial call is attempted. Enter the correct setting for this subfield from the following table.

Call Information Security	Subfield 2 Setting
For security, do not save and display call information	0
Local Loopback supported	1

Field P (Printer Port and Station Address)
Field P (Release 2 or later) contains the settings for the port address and station address of a printer for configuration screen printing. If you do not select a printer by completing this field, the system will send print jobs to the first available printer that is powered on. To complete the subfields of Field P, do the following:

Step 26: Subfield 1 specifies the port address. Valid port address selections are 0, 1, or 2. Enter the correct setting for this subfield.

Step 27: Subfield 2 specifies the station address. Valid station address selections are between 0 and 6. Enter the correct setting for this subfield.

Saving Your SDLC Configuration Data

When you have completed entering the fields for SDLC communication, do the following:

Step 28: Press the Enter key twice to store the configuration information on the system diskette.

Step 29: Ensure that the diskette activity indicator on the front of the control unit is off.

Step 30: Remove the system diskette.

Step 31: Ensure the write-protected tab on the backup system diskette is closed (not write-protected). Place the backup system diskette in the diskette drive.

Step 32: Press the Enter key twice to store the configuration information on the backup system diskette.

Step 33: If you have Release 2 or later and have a printer attached to your IBM 5394, you can make a copy of your configuration information for future reference. To make a copy, press the Local Copy key sequence. If you selected a printer in Field P, the copy will print at the specified printer. If you did not select a printer in Field P, the copy will print at the first available printer that is powered on. Field P will display the port and the station address of the printer when the print operation is complete.

Step 34: Configuration is complete. Make sure that the write-protection tabs on the diskettes are closed (not write-protected). Store one system diskette in a safe place. Keep the other system diskette in the diskette drive when operating the IBM 5394. If you move the IBM 5394 from one location to another, remove the diskette from the diskette drive.

Problem Checklist
The following table explains the configuration screen layout symbols.

D	Display Station
P	Printer
E	Extra Work Station
period (.)	No Work Station at this Address

1.	Make sure all the attached display stations and printers are set up and that the power is on.
2.	Make sure all the cables connected to the ports on the control unit are connected properly and securely fastened. Also make sure the cables are securely fastened to the work stations.
3.	Make sure the work station addresses of each work station is set correctly. If you are unsure of any work station addresses, review the setup and change accordingly.
4.	Check the terminator switch on any work station that has one. Make sure it is set correctly. Refer to the setup book that came with your work station(s) to locate terminator switches.
5.	A period (.) on your configuration screen display indicates there is no work station at that address. If a period appears where a D or P should appear, go through items 1 through 4.
6.	An E on your configuration screen indicates there are too many work stations are attached to the IBM 5394. An E appears if: o You attach more than four work stations to a Model 01A or 02A. o You attach more than 8 work stations to a Model 01B or 02B connected to an IBM System/36 or System/38. o You attach more than 16 work stations to a Model 01B or 02B connected to an IBM AS/400 system.

After you have checked all of the above, re-read this document to make sure all the steps were followed properly.