Envoy Application Programming Manual
Table Of Contents
- What’s New in This Manual
- About This Manual
- 1 Application Programming With Envoy
- 7 ADM-2 Multipoint Supervisor Protocol
- 8 TINET Multipoint Supervisor Protocol
- 9 Burroughs Point-To-Point Protocol
- 10 Asynchronous Line Supervisor Protocol
- A ASCII Character Set
- B ASCII to EBCDIC Code Conversion
- C File-System Procedures
- D Statistics Messages
- E S-Series Changes to Envoy
- NonStop™ Himalaya S-Series Server Architecture
- G-Series Migration Considerations
- CBSENSEON and CFSENSEON Modifiers
- LEOTRESYN and NOLEOTRESYN Modifiers
- Treatment of Characters After the Termination Character
- Number of SYN Characters
- DTR Drop
- Reporting of Parity Error
- Half-Duplex Support for Asynchronous Lines
- Controller Replacement
- SYSGEN and COUP
- Unit Numbers
- FDX Line Changes
- No Support for Auto-Call Unit
- Glossary
- Index
BISYNC Centralized Multipoint Supervisor Protocol
Envoy Application Programming Manual—427159-001
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Poll State
Poll State
The poll-state bit is associated with each address in the poll list. The poll-state bit is the
most significant bit of the first element of a station address; that is, station address.0.
The possible values of the poll state bit are:
0 = enable polling (the associated station is polled when a poll sequence is initiated)
1 = disable polling (the associated station is not polled)
By using the poll-state bit, an application process can select which stations in the poll
list are polled.
The poll state for stations is specified in either of the following ways:
•
The poll states for all stations are indicated by their poll-state bits in the address list
before the DEFINELIST procedure is called, or
•
The CHANGELIST procedure is called to alter the poll state of a specific station
after the DEFINELIST procedure has been called.