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25
Slot Name
Description
0x8001- 0x8200
The packet length is variable and the
last packet was of a length in the range
1 to 512. (subtract 0x8000).
0x8201-0xffff Unused values
11/12
Number of
Interval
Packets
This field shows the number of packets transmitted by the
originating device since the last SIP. The value is 16 bit and is
displayed in hexadecimal.
This number excludes the two SIP packets (at the start and end)
but includes all other packets irrelevant of the start code.
13/14
Originator’s
Manufacturer
ID
This is a 16 bit manufacturer identification number. It is always
the number assigned by the device that originally generated the
DMX and is not altered by any post processing devices.
The number is displayed in hexadecimal. A value of 0x0000
indicates that the manufacturer does not have a code allocated.
A value of 0xffff is a temporary code indicating that the
manufacturer has applied for a number.
Where possible the number is assigned as two ASCII characters
that represent the company initials.
15/16
2
nd
Device ID
The second device to process the DMX (which is the first to
post-process) inserts it’s manufacturer ID in this field.
17/18
3
rd
Device ID
The third device to process the DMX inserts it’s manufacturer ID
in this field.
19/20
4
th
Device ID
The fourth device to process the DMX inserts it’s manufacturer
ID in this field.
21/22
5
th
Device ID
The fifth device to process the DMX inserts it’s manufacturer ID
in this field. Any further post processing is not logged in the SIP
23
Spare
Sent as zero
nn
SIP
Checksum
The SIP checksum is calculated by adding the start code to the
first 23 data slots of SIP data.
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