FM Profile 3
Function management (FM) Profile 3 is supported on primary logical unit-secondary logical unit (PLU-SLU) sessions using LU types 0, 1, 2, or 3. This profile specifies the following session rules:
PLU and SLU use immediate response mode.
PLU and SLU support the following data flow control (DFC) commands (an asterisk [*] indicates commands permitted by the FM profile that are never sent by Host Integration Server):
CANCEL
SIGNAL
LUSTAT (SLU-PLU only)
CHASE*
SHUTD
SHUTC
RSHUTD*
BID and RTR
The following FM Usage fields define the options for Profile 3:
Chaining use (PLU and SLU)
Request control mode selection (PLU and SLU)
Chain response protocol (PLU and SLU)
Compression indicator (PLU and SLU)
Send EB indicator (PLU and SLU)
FM header usage
Bracket usage
Bracket termination rule
Alternate Code Set Allowed indicator
Normal-flow send/receive mode
The next three tables list the FM Profile 3 options that Host Integration Server supports. Host Integration Server rejects any BIND option that specifies an option value not listed in these tables.
Supported options for BIND requests from primary LUs
| Usage option | Value | Meaning |
|---|---|---|
| Chaining use element | 0 | Can send only single-element chains |
| 1 | Can send single- or multiple-chains | |
| Request control mode | 0 | Immediate request mode used |
| Chain response protocol | 01 | Can request only exception-only responses |
| 10 | Can request only definite responses | |
| 11 | Can request definite or exception-only responses | |
| Compression indicator | 0 | Cannot send compressed data |
| 1 | Can send compressed data (LU 1 only) | |
| Send EB indicator | 1 | Can send an end bracket |
Supported options for BIND requests from secondary LUs
| Usage option | Value | Meaning |
|---|---|---|
| Chaining use element | 0 | Can only send single-element chains (not LU 2) |
| 1 | Can send single- or multiple-chains | |
| Request control mode | 0 | Immediate request mode used |
| Chain response protocol | 01 | Can request only exception-only responses |
| 10 | Can request only definite responses | |
| 11 | Can request definite or exception-only responses | |
| Compression indicator | 0 | Cannot send compressed data |
| Send EB indicator | 1 | Cannot send end bracket |
Supported common protocol values for BIND requests from any LU
| Usage option | Value | Meaning |
|---|---|---|
| FM header usage | 0 | Cannot exchange FM headers |
| 1 | Can exchange FM headers | |
| Bracket usage | 1 | Bracket protocols must be used |
| Bracket termination rule | 1 | Bracket termination rule 1 is used |
| Alternate code set allowed | 0 | Must use Extended Binary Coded Decimal Interchange Code (EBCDIC) |
| Normal flow send/receive mode | 10 | Half-duplex flip-flop |