![Instruction Codes for Protocol 2000](/images/new-backgrounds/49586/4958643x1.webp)
Instruction Codes for Protocol 2000
Instruction |
| Definition for Specific Instruction |
| Notes | |||||
# | Description |
| Input |
| Output |
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1 | SWITCH VIDEO |
| Set equal to video input which is |
| Set equal to video output which is |
| 2, 15 | ||
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| to be switched |
| to be switched |
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| (0 = disconnect) |
| (0 = to all the outputs) |
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1 | SWITCH VIDEO |
| Set equal to video input which is |
| Set equal to video output which is |
| 2, 15 | ||
|
|
| to be switched |
| to be switched |
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| (0 = disconnect) |
| (0 = to all the outputs) |
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30 | LOCK FRONT |
| 0 | - Panel unlocked |
| 0 |
|
| 2 |
| PANEL |
| 1 | - Panel locked |
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31 | REQUEST |
| 0 |
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| 0 |
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| 16 |
| WHETHER PANEL |
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| IS LOCKED |
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61 | IDENTIFY MACHINE |
| 1 | - video machine name |
| 0 | - Request first 4 digits |
| 13 |
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| 2 | - audio machine name |
| 1 | - Request first suffix |
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| 3 | - video software version |
| 2 | - Request second suffix |
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| 4 | - audio software version |
| 3 | - Request third suffix |
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| 5 | – |
| 10 - Request first prefix |
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| 6 | – |
| 11 - Request second prefix |
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| 7 | - remote control name |
| 12 - Request third prefix |
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| 8 | - remote software version |
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| 9 | - Protocol 2000 revision |
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NOTES on the above table:
NOTE 2 – These are
example, if the HEX code |
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01 | 85 | 88 | 83 |
was sent from the PC, then the switcher (machine 3) will switch input 5 to output 8. If the user switched input 1 to output
7 via the front panel keypad, then the switcher will send HEX codes:
41 81 87 83 to the PC.
When the PC sends one of the commands in this group to the switcher, then, if the instruction is valid, the switcher replies by sending to the PC the same four bytes that it was sent (except for the first byte, where the DESTINATION bit is set high).
NOTE 13 – This is a request to identify the switcher/s in the system. If the OUTPUT is set as 0, and the INPUT is set as 1, 2, 5 or 7, the machine will send its name. The reply is the decimal value of the INPUT and OUTPUT. For example, for a 2216, the reply to the request to send the audio machine name would be (HEX codes):
7D 96 90 81 (i.e. 128dec+ 22dec for 2nd byte, and 128dec+ 16dec for 3rd byte).
If the request for identification is sent with the INPUT set as 3 or 4, the appropriate machine will send its software version number. Again, the reply would be the decimal value of the INPUT and OUTPUT - the INPUT representing the number in front of the decimal point, and the OUTPUT representing the number after it. For example, for version 3.5, the reply to the request to send the version number would be (HEX codes):
7D 83 85 81 (i.e. 128dec+ 3dec for 2nd byte, 128dec+ 5dec for 3rd byte).
If the OUTPUT is set as 1, then the ASCII coding of the lettering following the machine’s name is sent. For example, for the
7D | D9 | C3 | 81 (i.e. 128dec+ ASCII for “Y”; 128dec+ ASCII for “C”). |
NOTE 15 – When the OVR bit (4th byte) is set, then the “video” commands have universal meaning. For example, instruction 1 (SWITCH VIDEO) will cause all units (including audio, data, etc.) to switch. Similarly, if a machine is in “FOLLOW” mode, it will perform any “video” instruction.
NOTE 16 - The reply to the “REQUEST WHETHER PANEL IS LOCKED” is as in NOTE 4 above, except that here the OUTPUT is assigned with the value 0 if the panel is unlocked, or 1 if it is locked.
19 |