10 Kramer Protocol 2000
The Kramer Protocol 2000
MSB |
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1st Byte | DESTINATION |
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| INSTRUCTION |
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0 | D |
| N5 | N4 | N3 |
| N2 | N1 | N0 |
7 | 6 |
| 5 | 4 | 3 |
| 2 | 1 | 0 |
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2nd Byte |
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| INPUT |
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1 | I6 |
| I5 | I4 | I3 |
| I2 | I1 | I0 |
7 | 6 |
| 5 | 4 | 3 |
| 2 | 1 | 0 |
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3rd Byte |
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| OUTPUT |
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1 | O6 |
| O5 | O4 | O3 |
| O2 | O1 | O0 |
7 | 6 |
| 5 | 4 | 3 |
| 2 | 1 | 0 |
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4th Byte |
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| MACHINE NUMBER |
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1 | OVR |
| X | M4 | M3 |
| M2 | M1 | M0 |
7 | 6 |
| 5 | 4 | 3 |
| 2 | 1 | 0 |
1st Byte: | Bit 7 – Defined as 0 |
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| D – DESTINATION: |
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0 – Sends information to the switchers (from the PC)
1 – Sends information to the PC (from the switcher) N5…N0 – INSTRUCTION
The
machine’s keyboard, these bits are set with the INSTRUCTION NO. performed. The instruction codes are defined according to the table below (INSTRUCTION NO. is the value set in N5…N0).
2nd Byte: Bit 7 – Defined as 1
I6…I0 – INPUT
When switching (i.e. instruction codes 1 and 2), the
3rd Byte: | Bit 7 – Defined as 1 |
| O6…O0 – OUTPUT |
When switching (i.e. instruction codes 1 and 2), the
4th Byte: | Bit 7 | – Defined as 1 |
| Bit 5 | – Don’t care |
OVR – Machine number override M4…M0 – MACHINE NUMBER
This byte is used to address machines in a system by their machine numbers. When several machines are controlled from a single serial port, they are usually configured together and each machine has an individual machine number. If the OVR bit is set, then all machine numbers accept (implement) the command and the addressed machine replies.
When a single machine is controlled over the serial port, always set M4…M0 to 1, and make sure that the machine itself is configured as MACHINE NUMBER = 1.
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