Black Box SW591C Set SWF, Timeout Setting, To Set a Pause, Slave Leads Passed, To Set This Mode

Page 9

Automatic Timeout

The COS II times the intervals between the reception of each character and the next. You may instruct it to return to an unlinked state after intervals of 2.5, 5, or 10 minutes, or you may disable this automatic timeout feature. SWF 5 and SWF 6 control this feature.

 

Set SWF-

Timeout Setting

5

6

2.5 minutes

ON

ON

5 minutes

OFF

ON

10 minutes

ON

OFF

Disabled

OFF

OFF

Graphics Pause

These switch settings are followed only when the COS II has been set previously for Graphics Mode (for an explanation, see Section 4.5). They determine the amount of time that must pass before the COS II recognizes a control code sequence.

By providing for this pause, it is possible to send graphics files through the unit with no risk that it will switch accidentally when it encounters a control code sequence, or its binary equivalent. SWF 7 and SWF 8 determine the length of the pause.

CTS-to-DTR Pass-Through Mode

 

Set SWF

To Set A Pause of

7

8

 

 

 

50 milliseconds

ON

ON

100 milliseconds

OFF

ON

500 milliseconds

ON

OFF

1.5 seconds

OFF

OFF

If you choose CTS-to-DTR Pass-Through, CTS (Pin 5) and DTR (Pin 20) are passed straight through the Switch. The next table shows how the DTE or DCE setting of the port affects the pass- through option:

NOTE: If the internal buffer fills, the appropriate

 

 

CHAPTER 3: Installation

Master

Slave

Leads Passed

DTE

DTE

Master CTS to slave DTR

 

 

Slave CTS to master DTR

DTE

DCE

Master CTS to slave CTS

 

 

Slave DTR to master DTR

DCE

DTE

Master DTR to slave DTR

 

 

Slave CTS to master CTS

DCE

DCE

Master DTR to slave CTS

 

 

Slave DTR to master CTS

control lead (DTR or CTS) will be dropped to prevent data loss.

If you select Normal Operation, DTR (Pin 20) and CTS (Pin 5) are used strictly for buffer control. They are not passed straight through the Switch.

DCD-to-RTS Pass-Through Mode

 

To Set This Mode

Set SWC 8

CTS-to-DTR Pass-Through

ON

Normal Operation

OFF

If you select DCD-to-RTS Pass-Through, DCD

(Pin 8) and RTS (Pin 4) are passed straight through the Switch. The next table shows how the DTE or DCE setting of the port affects the pass-through option:

If you select Normal Operation, DCD and RTS are

Master

Slave

Leads Passed

DTE

DTE

Master DCD to slave RTS

 

 

Slave DCD to master RTS

DTE

DCE

Master DCD to slave DCD

 

 

Slave RTS to master RTS

DCE

DTE

Master RTS to slave RTS

 

 

Slave DCD to master DCD

DCE

DCE

Master RTS to slave DCD

 

 

Slave RTS to master DCD

always asserted. They are not passed through the Switch.

To Set This Mode

Set SWF 3

DCD-to-RTS Pass-Through

ON

Normal Operation

OFF

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Contents Code Operated Switch II 4-Port Expansion Board Code Operated Switch Contents Memory 8K buffer Enclosure Steel SpecificationsIntroduction Installation Setting the DIP switchesIntroduction Installation Functions and Arrangement of the Switch BanksBank Assignments Configuring Ports with the Individual Port Switch BanksTo Set This Mode Timeout SettingSet SWF To Set a PauseLSB MSB Ascii LSB MSB Ascii Ctrl HEX LSB 128 174 For Self-Test FunctionSending or Suppressing Breaks Signal direction Configuring Ports for DTE or DCEMaster Slave Leads passed DTE Port DCE PortConnecting and Powering Up the COS-II Text Mode Signaling a LockGraphics Mode OperationIndicators Front-Panel ButtonSelf-Tests Serial Port Test Interrupt TestAll Tests Individual Port Switch Bank Settings Settings for Switch Option FQuick Reference Guide System Switch Options Available through Position Park Drive Lawrence, PA 15055-1018 724-746-5500 Fax