Update, Command codes and instance summary – Grass Valley Switcher Products User Manual

Page 25

Switcher Products — Protocols Manual25

Kalypso & Zodiak Contribution Tally Protocol

Update

Update messages inform the receiver of critical state changes. Initialize
indicates the start of switcher tally processing (the beginning of life). Data
Consistent indicates that all tally packets are up to date. Since updates for
one change may span several packets, to avoid tallying sources improperly,
tally calculations should only be performed when data is consistent (all
updates have been sent). See

Table 8

. Refer to

Command Codes and Instance

Summary

for the use of these messages.

Command Codes and Instance Summary

Refer to

Table 9

for a list of the valid command codes and valid instance IDs

for each command, and message lengths.

Table 8. Update Messages

Notes

Update (0xD)

Update ID

1 – Initialize

2 – Data Consistent

Update (0xD)

Update ID

Table 9. Command Code and Instance

Command Code

Instances

Message Length

Data Only

With

Comman

ME Contribution (0x8)

1 – ME 1
2 – ME 2
3 – ME 3
4 – Pgm-Pst

External Proc Contribution (0x9)

1 – DPM 1
2 – DPM 2

Still Store Contribution (0xA)

n/a

Outputs Status (0xB)

1 – Outputs 1 - 8
2 – Outputs 9 - 16
3 – Outputs 17- 24
4 – Outputs 25 - 32
5 – Outputs 33 - 40
6 – Outputs 41 - 48

Source Name (0xC)

1 = Name & Nickname
2 = Alias

Update (0xD)

1 – Initialize
2 – Data Consistent

unused (0xE)

unused (0xF)