Black Box PCW22A-R3 Bedienungsanleitung PDF herunterladen (Seite 21)

PROTOCOL CONVERTER A/S-2G

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

Bisynchronous Device A/S-2G Converter Asynchronous Device

WAK

ACK 1

ACK 0

AA 32 32 32 32 02 2D FF FF

NAK

AA AA 32 32 32 32 3D FF FF

(Echo CR LF)

Send block F

(Echo all but CR LF)

(Echo CR LF)

Send block G,

(end with EOT Hex 04)

(Echo all but CR LF EOT)

ENQ

Send block F

TTD

Send block G

If data not yet available from asynchronous device:

Line release or turnaround:

2-second interval

WAK resets ENQ counter

Sync device buffer space available

If over 3-second interval

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 32 33

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Black Box PCW22A-R3 Bedienungsanleitung Seite 21