Specifications

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UCmd "n x" Default: 0
Mode: PACTOR Host: UB
_________________________________ Parameters: __________________________________
"n" - 0 to 15 specifying a User BYTE that may be set.
"x" - 0 to 255 specifiying the value of the specifice byte to be set.
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The UCMD is an extension of the UBIT command which allows up to 15 commands
that take numeric arguemants to be added to the PK-900 without burdening users
with a large number of commands. The functions controlled by UCMD are things
that most users will never have to change. Still they are important enough to
some users or application programs that we have included them under the
umbrella command UCMD.
The following are examples of how to use the UBIT command:
UCMD 5 Returns the present status of UCMD 5.
UCMD 4 5 Sets user command 4 to the value 5.
UCMD 12 OFF Sets user command 12 to the value of 0.
UCMD ON Restores user command 8 to its default value.
UCMD Shows the setting ofthe last UCMD entered.
Listed below are the UCMD functions and the default states that presently have
been assigned. The default state of each UCMD is always shown first.
UCMD 0: This is a PACTOR command. It sets the number of correct packets in
a row that must be received before generating an automatic request
to change from 100 to 200 baud.
UCMD 1: This is a PACTOR command. It sets thenumber of incorrect packets in
a row that must be received before generating an automatic requenst
to change from 200 to 100 baud.
UCMD 2: This is a PACTOR command. It sets the number of packets sent in a
speed-up attempt.
UCMD 3: This is a PACTOR command. It sets the maximum number of Memory ARQ
packets that are combined to form one good packet. When this number
is exceeded, all stored packets are cleared and Memory ARQ is
re-initialized.
UCMD 4-15 are unused for now.
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