Peaktronics 92 Series User Manual

13
SECTION III
PACS
®
Read/Write Parameters
AUX CLOSED POSITION
00D0 DOUB
The Aux Closed Position parameter is a DOUB
byte value that represents the aux close setting associated
with the "close limit alarm" (bit 7 of the Alarm Flags
parameter described in Section II). The value ranges from
0 to 10000 and represents a setting of 0% to 100%, where
0% is the closed position and 100% is the open position. In
the following example, the parameter is changed via the bus
to $09E7 (2535 decimal), which is a setting of 25.35%.
PACS
®
Command (CD#D0,2535):
82 00 D0 09 E7
This parameter can be read (as shown below) or
written at any time and is stored in non-volatile memory
within the DHC controller. The OCM-101 returns a normal
response to a CHANGE command, only when the DHC
controller has successfully stored the value. When writing
values greater than 10000 (2710 hexadecimal), the DHC
automatically limits the value to 10000.
PACS
®
Command (RD#00D0):
51 00 D0
Returned Data (example):
09 E7
The DHC controller will set bit 7 of the Alarm
Flags parameter to "1" whenever the Position parameter
(see Section II) is less than the aux close setting. Bit 7 is set
to "0" when the Position parameter is greater than or equal
to the aux close setting plus 1%. This provides hysteresis
that prevents the alarm flag from toggling between "1" and
"0" due to random electrical or mechanical variations. In
the previous example, the parameter is set to 25.35%. Bit 7
is set to "1" when Position is 25.34% or less, and bit 7 is set
to "0" when Position is 26.35% or more.
It should be noted that the aux close position can
also be set from the DHC control panel using the AUX
CLOSE OUTPUT mode. However, setting this parameter
precisely from the DHC controller can be difficult. If a
precise setting via the bus is desired, occasionally reading
this parameter to insure that an operator has not changed the
setting may be prudent.
AUX OPEN POSITION
00D2 DOUB
The Aux Open Position parameter is used the
same way as the Aux Closed Position parameter. It is a
DOUB byte value that represents the aux open setting
associated with the "open limit alarm" (bit 6 of the Alarm
Flags parameter). Bit 6 of the Alarm Flags parameter is
set to "1" whenever the Position parameter is greater than
the aux open setting. Bit 6 is set to "0" when the Position

Peaktronics 92 Series Specifications

General

Brand	Peaktronics
Model	92 Series
Category	Controller
Language	English