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PROTOCOL CONVERTER MODEL A/S-4
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b. SI ($0F) character precedes the SNA line status report of each logical unit. This line status
is handled as console data so the VDU CMD and device selection are not sent along with
this message. The line status is reported as follows:
SOF SC 1 2 3 4 EOF
STX 0F 3 3 CR LF LU, LU CR LF ETX
Character Number:
1. 0 ($30) Physical Unit (PU) not active
1 ($31) PU active but inbound logical unit (LU) not active
3 ($33) Inbound LU active but no LU-LU session active
7 ($37) Inbound LU active and in session with another LU
2. 0 ($30) PU not active
1 ($31) PU active but outbound LU not active
3 ($33 ) Outbound LU active but no LU-LU session active
7 ($37) Outbound LU active and in session with another LU
3. DW = PU not active
PU = PU active
LU = Inbound LU active-can send logon or receive SSCP data
LL = Inbound LU in LU-LU session-can send or receive jobs
4. DW = PU not active
PU = PU active
LU = Outbound LU active-can send logon or receive SSCP data
LL = Outbound LU in LU-LU session-can send or receive jobs
5. Normal EBCDIC data received from the SNA host will be converted into ASCII before being
transmitted to the VDU. Transparent Data received from the SNA host will be passed to the
VDU with no conversions, except when the character is less than a hexadecimal value of $20.
The character would then be preceded by DLE ($10) and the character itself would be made
ASCII printable by setting it’s two most significant bits. This addition of the DLE and making
the character printable is only done if this option is selected in the Application Options.
Example: Recvd - $1E = $10$DE - Xmitted
6. End of File (EOF) character is selected by H-Application Options menu. This single character
command can be disabled (turned off) so that no EOF character is sent.
7. Device OFF is selected by C-VDU commands menu. This single or dual character command
terminates the transmission of this device’s data. This command can also be disabled (turned
off) by setting it to a space so that no Device Off command is sent. If the command is set to a
printable character (X`21’ or greater) the VDU CMD will precede the Device OFF command
or if the Device OFF is set to a control character no VDU CMD will precede it.
NOTE
Console data is not terminated by a VDU CMD or a Device OFF character.