Verilink 1558A (34-00228) Product Manual Instrukcja Użytkownika Pobierz pdf (Strona 10)

Installation 2-31558A APS

2.4.5 COM Bus Connections

The rear panel COM BUS connectors (IN/OUT) are used to

communicate to/from the optional APS 1559 site manager.

These connections are only used when a 1559 Network

manager is co-located with the 1558A(s). Bus connections

from the manager to one or more 1558A units is done in a

daisy chain fashion. That is, the COM BUS Out from the

1559 is connected to the COM BUS IN of the 1558A and

the COM BUS OUT of the 1558A is connected to the COM

BUS IN of the 1559. Physically, the connections to the

COM Bus IN/OUT are RJ11, 6-pin miniature modular

jacks. The function of the six pins associated with the jacks

are shown below.

2.5 Configuration Modes

Any time that the 1558A unit is initialized (power removed,

then reapplied), all key configuration data is read by the

1558A CPU and implemented based upon the particular

configuration boot mode options selected by the user. There

are four possible configuration boot modes:

• Configure/Boot from Switches

(refer to Section 2.5.1).

• Configure/Boot from ROM (refer to Section 2.5.2).

• Configure/Boot from RAM (refer to Section 2.5.3).

• Configure/Boot from Manager. This requires the optional

1559 manager (refer to Section 2.5.4).

The following sections describe how to set up the 1558A to

boot using one of the above modes as well as other general

operating parameters.

NOTE: All factory default settings in this manual are

shown underlined.

2.5.1 Switch Configuration

After the equipment has been unpacked and inspected and

mounted, the next step is to configure the unit. All unit

options are set by the switch positions on four 8-position

DIP switches (S1, S2, S3 and S4) on the rear of the 1558A

unit. The 1558A is shipped from the factory with all option

switches in the OFF (factory default) position. The follow-

ing paragraphs briefly describe the 1558A option switches.

NOTE: After all of the option switches have been set to

the desired mode of operation, recycle the power to the

unit. At power up, the CPU will read and implement the

switch settings selected by the user.

Option Switch S1

This 8-position DIP switch is used to set the following unit

options:

• Block/Pass ESF data link configurations

• Regeneration or Pass CRC

• Master or Slave Card Operation

• Boot alarm parameters from ROM or RAM

• Boot general parameters from Switches, ROM, RAM, or

Manager

The following table describes the DIP switch settings con-

trolled by Switch S1.

Option Switch S2

This 8-position DIP switch is used to set the following unit

options:

• Alarm on Framing Errors

8 Not Used Not Used

PIN COM BUS IN COM BUS OUT

1 Not Used Not Used

2 Signal Ground Signal Ground

3 Data, output Data, Output

4 Data, input Not Used

5 Signal Ground Signal Ground

6 Not Used Not Used

Pin NET A & B, RJ48 DTE RJ48

Position Switch S1 Description

1OFF

= DTE/NET, Block Data Link

ON= DTE/ NET, Pass Data Link

2OFF= NET/DTE, Block Data Link

ON= NET/DTE, Pass Data Link

3OFF

= DTE/NET, Regen. CRC

ON= DTE/NET, Pass CRC

4OFF

= NET/DTE, Regen. CRC

ON= NET/DTE, Pass CRC

5OFF

= Card Function, Slave

ON= Card Function, Master

6OFF

= ARM from ROM

ON= ARM from RAM

7,8 OFF

,OFF = Boot from Switches

OFF,ON = Boot from Manager

ON,OFF = Boot from RAM

ON,ON = Boot from ROM

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 38 39

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