6100 MPS-B Programming Manual

INTRODUCTION TO 6100 MPS-B
Message Formats
FREE FORMAT SELECT REQUEST (Burroughs protocol):
Select Specific Station Using MCW:
Text Out field = 2 + message length in bytes
Text field =
|<---- MCW ---->|
_________________
| | |
| 0 | si | ...
| | |_
|<---------------------- message ---------------------->|
_________________________________________/ /_____________
| | | | | / / | |
... | [SOH] | a1 | a1 | [STX] |<---- text --->| [ENQ] |
| | | | | / / | |
/ /
si = station-index from Poll/Select List
a1 = Station character address
Select Specific Station Using sequence-header:
Text Out field = 7 + message length in bytes
Text field =
|<---- MCW ---->|<---------- sequence-header ---------->|
_________________________________________________________
| | | | | | | |
| 0 | 0 | [EOT] | a1 | a1 | q | [ENQ] | ...
| | | | | | | |_
|<---------------------- message ---------------------->|
_________________________________________/ /_____________
| | | | | / / | |
... | [SOH] | a1 | a1 | [STX] |<---- text --->| [ENQ] |
| | | | | / / | |
/ /
a1 = Station character address
q = Select function code
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