1.1. These specifications define projector control commands for PLC-WL2500 / WL2501.
1.2. The projector control commands are used to remotely control a projector through RS-232C from a
computer.
2. Serial Interface Specifications
2.1. Transfer Specifications
Item Specifications
Synchronous system Asynchronous
Transmission Speed 9600 / 19200
Data Length 8 bit
Parity N/A
Stop Bit 1
Flow Control N/A
1) Transmission speed: initial setting value is 19200.
2) Transmission speed can be changed in service mode.
2.2. Connection
Dedicated serial cable must be used for connection to a computer and a projector.
PC Projector
COM 1 Control Port
(D-Sub 9 Pin) (D-Sub 9 Pin)
4/25
PLC-WL2500
/WL2501
Basic Serial Command Specifications
3. Notes for Communication
1. The projector control command is defined as one command/one line that starts with “C” and ends
with carriage return (0x0D).
2. There are two types of Commands: Functional Execution Commands and Status Read
Commands.
Example of Functional Execution Command: “C05” [CR]
Example of Status Read Command: “CR0” [CR]
3. When it takes more than one second to receive one command, it does not operate.
The information of buffer is cleared when it takes more than one second to receive carriage return
(0x0D) after the projector receives the first data “C”.
4. For Command pipelining, wait for the interval of 100ms after receiving a response.
More than 100ms
Command
PC → Projector “C” “0” “7” CRNext Command
Projector → PCACK CR
Response (A few ms 〜 5s)
4.1. When a command is issued before receiving a response, the function is not executed properly.
4.2. Except for when there is no Response for more than 5 seconds.
5. It takes about 5 seconds for internal initialization after plugging in AC power. During this time, it
cannot process commands. Do not issue any command.
6. The number of characters of response to Status Read Commands depends on commands.
Please see [7. Status Read Commands].
7. Characters for commands must be Capital (A - Z).
5/25
PLC-WL2500
/WL2501
Basic Serial Command Specifications
Command
Item Command
Item
POWER OFF
4. Functional Execution Command Table
C00 POWER ON C20 BRIGHTNESS +
C01
C02 POWER OFF C22 ―――
C03 ―――C23 ―――
C04 HDMI C24 ―――
C05 Computer 1 C25 ―――
C06 Computer 2 C26 ―――
C07 Video C27 IMAGE (Toggle)
C08 ―――C28 Direct on Enable
C09 VOLUME + C29 Direct on Disable
C0A VOLUME - C2A Power Management Ready
C0B AUDIO MUTE ON C2B Power Management OFF
C0C AUDIO MUTE OFF C2C ―――
C0D VIDEO MUTE ON C2D ―――
C0E VIDEO MUTE OFF C2E Power Management Shut down
C0F
C10 Screen Full size C30 D.ZOOM +
C11 Image Standard C31 D.ZOOM -
C12 Image Real C32 ―――
C13 Image Cinema C33 ―――
C14 Image 1 C34 S-video
C15 Image 2 C35 ―――
C16 Image 3 C36 ―――
C17 Image 4 C37 ―――
C18 Image Blackboard C38 ―――
C19 Image Dynamic C39 Image Colorboard
C1A ―――C3A POINTER RIGHT
C1B ―――C3B POINTER LEFT
C1C MENU ON C3C POINTER UP
C1D MENU OFF C3D POINTER DOWN
C1E DISPLAY CLEAR C3E ―――
C1F ―――C3F ENTER
(Quick Power OFF)
Screen Normal size (4:3)
C21 BRIGHTNESS -
C2F ―――
6/25
――― means no function.
PLC-WL2500
/WL2501
Basic Serial Command Specifications
Command
Item Command
Item
C40 ―――C80 ―――
C41 ―――C81 ―――
C42 ―――C82 ―――
C43 FREEZE ON C83 ―――
C44 FREEZE OFF C84 ―――
C45 ―――C85 ―――
C46 ―――C86 ―――
C47 ―――C87 ―――
C48 ―――C88 ―――
C49 ―――C89 Auto PC ADJ.
C4A ―――C8A PRESENTATION TIMER
C4B ―――C8B PRESENTATION TIMER(EXIT)