Black Box PCW22A-R3, PCW22A-R4 manual Echo CR LF Send block F Echo all but CR LF

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PROTOCOL CONVERTER A/S-2G

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

Bisynchronous Device

A/S-2G Converter

Asynchronous Device

(Echo CR LF) Send block F (Echo all but CR LF)

ENQ

2-second interval

WAK

WAK resets ENQ counter

ENQ

Sync device buffer space available

ACK 1

Send block F

ACK 0

(Echo CR LF)

If data not yet available from asynchronous device:

If over 3-second interval

AA 32 32 32 32 02 2D FF FF TTD

NAK

AA AA 32 32 32 32 3D FF FF

Line release or turnaround:

Send block G,

(end with EOT Hex 04) (Echo all but CR LF EOT)

Send block G

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Contents Protocol Converter FCC Statement Protocol Converter A/S-2G Table of Contents Synchronous Device to Asynchronous Device RXC SpecificationsIntroduction Installation Unpacking and InspectionData Flow Control 2 SW2 SELF-DIAGNOSTICS Switch #4 on =Reset Options Reconfigure Switch ModeData Terminal Ready DTR Signal Options 5 RS-232 PASS-THROUGH OptionsClear to Send CTS Signal Options Baud Rate OptionsModem or DIRECT-TO-TERMINAL Connection Preparing the A/S-2G for Connection to a Synchronous Device Carrier OptionsCable Requirement External or Internal Clocking Option Command PASS-THRU Asynchronous Device to Synchronous Device OperationFlow Control USE of Carriage Return a 2770/2780 Mode Presentation of Data from A/S-2G to Synchronous Device Verification of Data Reception Line 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 Transparency Mode of Operation Installing or Replacing PromsConversions and Connections GND RS-232 Cable ChartCode Conversions Special Conversions Printed Board Circuit Layout Printed Circuit Board LayoutPark Drive Lawrence, PA