S5-95U, Second Serial Interface Computer Link with 3964(R) Transmission Protocol
FB207 STL Description
NAME :SENDEN
:C DB 207 Open send mailbox
:O F 100.7 End if currently sending or
:ON I 0.0 if no send request present
:BEC (Enable sending at I 0.0)
:
:A F 100.0 Error during last send procedure?
:JC PB 1 Then error evaluation in PB1
:
: Prepare send mailbox
:L KF +10 10 bytes are to be sent
:T DW 0 (1st word in send mailbox)
:
:L DW 1 Modify send data
:ADD KF +1
:T DW 1
:
:AN F 100.7 Send initiation
:S F 100.7
:BE
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FB208 STL Description
NAME :EMPFANG
:C DB 208 Open receive mailbox
:A F 101.7 End if no data has been
:BEC received.
:
:A F 101.0 Error during receiving?
:JC PB 2 Then error evaluation in PB2
:
: Evaluate receive mailbox
:L DW 0 Evaluate length received
:T QW 0
:L DW 1 Evaluate date received
:T QW 2
:
:AN F 101.7 Re-enable receive mailbox
:S F 101.7
:BE
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EWA 4NEB 812 6095-02
3-17
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