6100 MPS-B Programming Manual

INTRODUCTION TO 6100 MPS-B
Message Formats
FREE FORMAT BROADCAST SELECT REQUEST (Burroughs protocol):
Text Out field = 3 + 3 * station count + message length in
bytes
Text field =
|<---- MCW ---->|<------ sequence-header -------- ...
_________________________________________________
| | | | | | |
| 0 | 0 | [EOT] | a1 | a1 | t | ...
| | | | | | |_
... -------------------- sequence-header ------------------>|
___________________________ ___________________________
| | | | | | | |
... | a2 | a2 | t | . . . | an | an | s |...
| | | | | | | |_
|<---------------------- message ---------------------->|
_________________________________________/ /_____________
| | | | | / / | |
... | [SOH] | an | an | [STX] |<---- text --->| [ETX] |
| | | | | / / | |
/ /
a1, a2, ..., an = Station character addresses
t = Broadcast select function code
s = Fast select function code
1-23