Using the EDP Port
6-3
Table 6-1. (continued)
SIMPLE COMMANDS
“B”
(BUFFER ENABLE COMMAND)
Requests that the CW-80 enable the transaction buffer.
Once enabled, all data normally transmitted upon PRINT
Key activation or Auto Print functions will be buffered.
Data can then be made available from the buffer via serial
command. This command will most often be used in multi-
drop applications. The CW-80 acknowledges when
successful with the Acknowledgement Character sequence,
[“*”][EOL], if enabled. This does not affect CW-80 “Power
up” buffer status as defined in the Configuration Menus.
“U”
(BUFFER DISABLE COMMAND)
Requests that the CW-80 disable the transaction buffer.
Once disabled, all data normally transmitted upon PRINT
Key activation or Auto Print functions will be sent out the
serial port. The CW-80 acknowledges when successful with
the Acknowledgement Character sequence, [“*”][EOL] if
enabled. This does not affect CW-80 “Power up” buffer
status as defined in the Configuration Menus, however.
“D”
(DATA BUFFER XMIT / NO CLEAR COMMAND)
Requests that the CW-80 transmit the contents of the
transaction buffer. It, however, leaves the data in the
transmit buffer intact, until cleared by either a “Y” or “H”
command. No acknowledgement is made if transactions are
in the buffer. Only the transactions are transmitted. If the
transaction buffer is empty, the CW-80 acknowledges the
command with a [“*”][EOL] Acknowledgement Character
sequence, if enabled.
“Y”
(DATA BUFFER XMIT AND CLEAR COMMAND)
Requests that the CW-80 transmit the contents of the
transaction buffer, and to clear the transaction buffer. No
acknowledgement is made if transactions are in the buffer.
Only the transactions are transmitted. If the transaction
buffer is empty, the CW-80 acknowledges the command
with a [“*”][EOL] Acknowledgement Character sequence,
if enabled. Only complete transactions are transmitted.
“H”
(CLEAR BUFFER COMMAND)
Requests that the CW-80 clears the contents of its transac-
tion buffer without transmitting the contents of the buffer.
The CW-80 acknowledges when successful with the
Acknowledgement Character sequence, [“*”][EOL], if
enabled.
Note:
The buffer is able to store in
excess of 500 transactions in
any of the Prt Out formats. A
“BUFFER” error message will
appear on the display for one
second once the buffer has been
filled to 90% of capacity. A
“FULL” error message will
appear on the display for one
second once the buffer has been
filled completely, and the next
transaction will cause a loss of
data. Data is discarded in a
first-in first-out fashion.
continued...
