Broadcast Command Format

Definition of terms in Directly Addressed Command Format table:

STX is the ascii STX character (0x02).

Command is the command code.

Length is the number of bytes in the Group ID, Multi ID, Mode and Data fields.

Group ID is the Group ID value in the display’s Option menu. A=1, B=2, C=3, etc.

Multi ID is the Monitor ID value in the display’s Tiling menu.

Mode selects whether the command is a Read command or a Write command.

Read = 0x00

Write = 0x02

Data contains values specific to the selected command.

Checksum is the one's complement of the following response fields: STX, Command, Length, Group ID, Multi ID, Mode, Data (i.e. the sum of these fields and the checksum field, modulo 256, will be 0xFF).

ETX is the ascii ETX character (0x03).

Broadcast Command Format

Commands that are sent to all displays are broadcast commands. They have the this format:

 

STX

Command

Length

Group ID

Multi ID

Data

ETX

Send to Display

1 byte

1 byte

1 byte

1 byte

1 byte

n bytes

1 byte

Definition of terms in Broadcast Command Format table:

STX is the ascii STX character (0x02).

Command is the command code.

Length is the number of bytes in the Group ID, Multi ID and Data fields.

Group ID is set to 0x00.

Multi ID is set to 0x00

Data contains values specific to the selected command.

ETX is the ascii ETX character (0x03).

The displays do not send responses to broadcast commands.

Command / Response Examples

Example: Power query when unit is powered on (Group ID = A, Multi ID = 4)

 

STX

CMD

LEN

GID

MID

MOD

DAT

CHK

ETX

 

 

 

 

 

 

 

 

 

 

Command

02

10

03

01

04

00

 

 

03

 

 

 

 

 

 

 

 

 

 

Response

02

10

04

01

04

00

01

E3

03

 

 

 

 

 

 

 

 

 

 

PS5580 RS232 and LAN Command Protocol

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Planar LAN Command Potocol, PS5580, RS232 manual Command / Response Examples

RS232, LAN Command Potocol, PS5580 specifications

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