Serial Communication, cont’d

Command/response table for advanced instructions (for the Windows-based control program)

Data downloads/uploads are initiated by sending a series of hex commands to the host RS-232 port of the System 7 switcher. The Windows-based control program uses these commands mainly to load and save driver data and system configuration settings. See page 3-6 for information on projector control memory.

Command

Hex. command

Response

Additional description

 

(host to switcher)

(switcher to host)

 

Send/receive data to/from page 0 memory

 

 

 

 

 

 

 

Send

80

A0 [16k bytes of data]

Dnl0

The host downloads 16k bytes

 

 

 

 

of binary data to page 0 of the

 

 

 

 

System 7’s memory.

Recieve

80

A1

 

The System 7 sends 16k bytes of

 

 

 

 

binary data to the host.

 

 

 

Send/receive data to/from page 1 memory

 

 

 

 

 

 

 

Send

80

A2 [16k bytes of data]

Dnl1

The host downloads 16k bytes

 

 

 

 

of binary data to page 1 of the

 

 

 

 

System 7’s memory.

Receive

80

A3

 

The System 7 sends 16k bytes of

 

 

 

 

binary data to the host.

 

 

 

Send/receive a flag (parameter) block

 

 

 

 

 

 

 

Send

80

A4 [32 bytes of data]

Prm0

The host sends 32 bytes of binary

 

 

 

 

parameter data to the System 7.

Receive

80

A5

 

The System 7 sends 32 bytes of

 

 

 

 

binary parameter data to the host.

Send/receive a segment (256 bytes) of data (a segment relating to a single button)

Send

80

A6

??

Receive

80

A7

 

 

 

??

[256 bytes of data]

Seg0

The host sends 256 bytes of

 

 

binary data to the System 7.

The System 7 sends 256 bytes of binary data to the host.

Send/receive 512 bytes of channel (button) data

Send

80

A8

[512 bytes of data]

EEP0

The host sends 512 bytes of

 

 

 

 

 

binary data to the System 7.

Receive

80

A9

 

 

The System 7 sends 512 bytes of

 

 

 

 

 

binary data to the host.

??indicates the block number in hex notation where (0 to 127 decimal).

The responses shown are ASCII.

??

can be 0 to 7F (hex)

4-10 System 7SC • Serial Communication

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Extron electronic System 7SC Command Hex. command Response Additional description, Send/receive data to/from page 0 memory