z/OS Communications Server: SNA Programmer's LU 6.2 Guide
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Additional FMH-5 DSECTs

z/OS Communications Server: SNA Programmer's LU 6.2 Guide
SC27-3669-00

The IBM-supplied DSECT ISTFM5 enables you to refer to the fields in the FMH-5 symbolically. ISTFM5 also contains several other DSECTs that map storage in optional subfields that can be part of the FMH-5. (For an assembler listing of the ISTFM5 DSECT, refer to z/OS Communications Server: SNA Programmer's LU 6.2 Reference.)

The additional FMH-5 DSECTs and the subfields they map are:
FM5ASI
Access security subfields. Each of these subfields, in turn, is mapped by the DSECT FM5ACCSE.
FM5LUOW1
Logical unit of work identifier field.
FM5LUOW2
Actual logical unit of work field.
FM5CVCOR
Conversation correlator.
FM5ACCSE
Individual access security subfields.
FM5PIPFM
PIP format.
FM5PIPSM
Actual PIP subfield.
Parent topic: Building an FMH-5

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