Grass Valley Switcher Products - Manual (Page 124)

124 Switcher Products — Protocols Manual
Section 4 — DPM CPL Protocol
Examples
The following are examples of switcher messages to and from the DPM. All
values are in hex. The semi-colon after 2 or more bytes is just used as a sep-
arator to give the name of that field and any other explanatory information.
(Values are in hexadecimal)
Example 1
DPM -> switcher, RETURN_CODE:
00 01; Version
00 11; Msg token, RETURN_CODE
00 00; Return Id
00 04; Data Size
00 00 00 16; Header checksum
00 00 00 0F; Return code
Example 2
Switcher -> DPM, UNSUBSCRIBE
00 01; Version
00 0a; Msg token, UNSUBSCRIBE
00 00; Return Id
00 18; Data Size
00 00 00 23; Header checksum
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ; 16 bytes rqstAddr
00 00; Rqst Id
00 00; Serial number
00 03; Service Id, PARAMETER_SERVICE
00 04; flags, CLEAR_SUBSCRIPTIONS
Example 3
Switcher -> DPM, SUBSCRIBE
00 01; Version
00 08; Msg token, SUBSCRIBE
00 00; Return Id
00 20; Data Size
00 00 00 29; Header checksum
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ; 16 bytes rqstAddr
00 00; Rqst Id
00 00; Serial number
00 03; Service Id, PARAMETER_SERVICE
00 02; flags, REPLACE_SERVICE
03 95; Param Id, PID_SYSTEM_NAME
00 00; padding
00 00 00 00; Device, EFFECT_MANAGER