12
Bits 2, 3, 4, 5, & 6 - UNASSIGNED (always "0")
Bit 7 - "override status"
A "1" indicates that override operation is enabled,
and a "0" indicates that the DHC is in normal
operation. When this bit is "0", the remaining bits
will also be "0".
SERIAL NUMBER
606E DOUB
The Serial Number parameter is a DOUB byte
value that represents the two least significant bytes of the
DHC controller's serial number. This parameter can only
be read using the READ DOUB byte command with direct
addressing (PACS
®
Code $51) as shown in the example
below. Any other READ command will return $FF data.
PACS
®
Command (RD#606E):
51 60 6E
Returned Data (example):
05 E3
To obtain the complete serial number, the most
significant byte of the Model Code parameter provides the
most significant byte of the serial number.
SERIAL No. MSB / MODEL CODE
606C DOUB
The Model Code parameter is a DOUB byte value
that indicates which model of DHC controller (see page 1)
is being used. This parameter can only be read using the
READ DOUB byte command with direct addressing
(PACS
®
Code $51) as shown in the example below. Any
other READ command will return $FF data.
PACS
®
Command (RD#606C):
51 60 6C
Returned Data (example):
01 02
In the previous example, the most significant byte,
$01, provides the most significant byte of the 3 byte serial
number value. The least significant byte, $02 (2 decimal),
represents the DHC model as shown in the following table.
Refer to the most recent revision of this manual for model
codes that are not shown. No model is assigned a Model
Code of $00 or $FF (255 decimal). Model code 13 ($0D) is
assigned to a custom product; consult Peaktronics, Inc. for
details.
Model Code DHC model
(decimal)
1 DHC-100
2 DHC-100A
3 DHC-100B
4 DHC-300
5 DHC-300A
6 DHC-300B
7 DHC-200
8 DHC-200A
9 DHC-200B
10 DHC-100C
11 DHC-100D
12 DHC-100E
13 DHC-100Z (custom product)
14 DHC-200C
15 DHC-200D
16 DHC-200E
17 DHC-400
Each DHC model has its own serial number
sequence, so two different model numbers could have the
same serial number. By reading both the Model Code
parameter and the Serial Number parameter, a specific
DHC controller can be identified. In the previous
examples, model code, $02, indicates a DHC-100A with
serial number 67043 ($0105E3). This combination is
unique to that specific DHC controller.
If the 3 byte serial number value reads $000000, it
could indicate that there is an internal problem with the
DHC controller. A model code of $00 or $FF (255
decimal) could also indicate an internal problem. Consult
Peaktronics, Inc. for assistance in these cases.
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