
31
Table 5. Command List Notes
(1)
The
C=
and
D=
commands do not change the mode of operation but do provide a user supplied power-up
message if configured using the
MO
command.
(2)
The
IN
command does not change the operating parameters stored in RAM, but it does stop continuous
readings (
P2
,
P4
,
T2
,
T4
commands). If the
IN=RESET
command is sent, then any parameters that were
stored in RAM, and were not stored in the EEPROM with a
SP
command, will default to the last stored
EEPROM value. This may cause a change in the operational parameters as well as a configuration change.
(3)
The
P2
,
P4
,
T2
, and
T4
commands do not change the operating parameters, only activate continuous
readings.
(4)
When an information request command is sent to a group or global address, the HPBs do not respond
sequentially. That is, the command is returned to the host processor before the replies from the HPBs.
Also, these commands require more time for execution, often requiring EEPROM reads and/or writes, so
responses from more than one HPB are not received in any guaranteed order. During the execution of one
of these commands, if another command is received that is an After type, whether globally, group, or
individually addressed, the received command is rejected and the command read status error (see
RS
command) is set.
(5)
These commands may cause sequential responses from any, all or none of the addressed units. A
sequential response is when the HPB reply is sent before the global or group command through the
network. See the individual command descriptions for detailed information.
(6)
These commands only require a write enable (
WE
) when used in the action directing form. For these
commands the
WE
command provides a single occurrence write enable for RAM update. That is, only the
next instruction is written to RAM. The
WE=RAM
command provides continuous write enables for RAM
for multiple command updates. The continuous RAM enable is active until a subsequent
WE
is sent.
(7)
These commands terminate an active continuous reading command (
P2, P4, T2, T4
) and initiate the new
one.
(8)
These commands automatically write to the EEPROM when they are used in the action directing form,
which must be preceded by a WE command.
(9)
These commands can be used to change RAM contents which can then be written to the EEPROM using
the
SP=ALL
command.