
40
IC
Idle Count Parameter
The
I
dle
C
ount parameter specifies the number of pressure integration times that the microprocessor skips between
output values (see Fig. 8). This command is only operational for the
I=Mn
form of the Integration Time (
I=
)
command. (See the
I=
command for setting integration times.) This parameter can be used to reduce the average
HPB power requirement by as much as 50% when increased response time is acceptable. This parameter is also
used to reduce the reply message traffic on the network bus from HPBs whose response time is not critical.
(Default:
IC=0
)
Note:
If
OP=W
(watchdog timer) is set, then the
IC
command will not be accepted (other than
IC=0
)
and will cause an
RS
command error condition.
Inquiry:
*dd
IC
Action:
*dd
WE
EEPROM Store: *dd
WE
*dd
IC=
ICcount
*dd
SP=ALL
ICcount
0 to 255
where: 0
causes all integration cycles to be used.
1
causes 1 of 2 integration cycles to be used.
2
causes 1 of 3 integration cycles to be used.
3
causes 1 of 4 integration cycles to be used.
255
causes 1 of 256 integration cycles to be used.
ID
Identification Number
Set the device
ID
entification number. This command is used to set a unique HPB address and/or a group address.
Two sections describe this command based on the ring or multi-drop configuration of the unit.
(Default: device
ID=00, group address=90
)
Inquiry:
*dd
ID
(reply is group number for ring network units and both group number and subaddress for
multi-drop network units.)
Action:
*dd
WE
EEPROM Store: *dd
WE
*dd
ID=
newNumber
*dd
SP=ALL
newNumber
00 99 (must enter a
TWO
digit decimal number)
where: 00
Unit numbers itself 00 (null address) and transmits the message unchanged.
A
*99ID=00
will change all HPBs in network to null address (see
Note
above).
01-88
Unit numbers itself with device ID newNumber, increments the number by 1, and
transmits the message. This will sequentially number all HPBs in a network, starting
from unit dd, with ID=newNumber (see
Note
above).
89
Unit numbers itself with device ID 89, changes the number to 99, and transmits
the message.
90-98
Unit assigns itself group address newNumber, and transmits the message unchanged.
99
Unit does not change its address, changes newNumber to ER and transmits the
message.
ER
Unit does not change its address and transmits the message unchanged.