Black Box PCW22A-R3, PCW22A-R4 manual Data Flow A/S-2G to Asynchronous Device

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PROTOCOL CONVERTER A/S-2G

Data Flow — A/S-2G to Asynchronous Device

Bisynchronous Device

A/S-2G Converter

Asynchronous Device

ENQ

ACK 0

Send data block A

ACK 1

Send block A Unformatted mode— successive characters (including spaces) appear one after another as sent

If A/S-2G buffer is nearly full when synchronous device is transmitting:

Send data block B

2-second interval

WAK

ENQ

2-second interval

WAK

Send block B

ENQ

WAK resets ENQ counter with

respect to ENQ time out

ACK 0 (when buffer

available)

Send data block C

ACK 1

Send block C

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Contents Protocol Converter FCC Statement Protocol Converter A/S-2G Table of Contents Synchronous Device to Asynchronous Device RXC SpecificationsIntroduction Unpacking and Inspection InstallationData Flow Control 2 SW2 SELF-DIAGNOSTICS Switch #4 on =Reset Options Reconfigure Switch ModeData Terminal Ready DTR Signal Options 5 RS-232 PASS-THROUGH OptionsBaud Rate Options Clear to Send CTS Signal OptionsModem or DIRECT-TO-TERMINAL Connection Carrier Options Preparing the A/S-2G for Connection to a Synchronous DeviceCable Requirement External or Internal Clocking Option Command PASS-THRU Asynchronous Device to Synchronous Device OperationFlow Control USE of Carriage Return a 2770/2780 ModeVerification of Data Reception Presentation of Data from A/S-2G to Synchronous DeviceLine Turnaround Data Flow A/S-2G to Synchronous Device NAK Echo CR LF Send block F Echo all but CR LF Data Flow A/S-2G to Synchronous Device Synchronous Input Data Format Synchronous Device to Asynchronous DeviceEbcdic characters stripped Data Flow A/S-2G to Asynchronous Device Operation EOT Installing or Replacing Proms Transparency Mode of OperationConversions and Connections GND RS-232 Cable ChartCode Conversions Special Conversions Printed Board Circuit Layout Printed Circuit Board LayoutPark Drive Lawrence, PA