Register number, Sequence number, Data – Grass Valley 2200 User Manual
Page 66: Taking a snapshot of the switcher
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Section 3 Ð Editor Interface Commands
Register Number
Valid register numbers are in the range of 00H to 63H (00 to 99 decimal) for E-
MEM data. When transferring conÞguration data, the register number is ignored.
Sequence Number
The Sequence Number is a two-byte value that always begins at 0 and increments to
a maximum of FFFDH and is used to number successive packets of data. Please
note the following:
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Each transfer must start with the sequence number reset to zero.
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A Sequence number of FFFEH indicates the end of the data
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A Sequence number of FFFFH will abort a data transfer.
Data
The length of data varies, depending on the Effects Address being used.
Taking a Snapshot of the Switcher
An editor request for effects address OBH tells the switcher to transfer all levels
for that register. So to take a snapshot of the whole switcher:
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Enable all E-MEM levels
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Learn to Register x
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The editor sends a Request E-MEM Data message for Register x