Epson JED T440 Epson VP21 projectors Code 0C hex, RS232 connections to Epson ESC-VP21 projectors

Epson VP21 projectors (Code 0C hex)

This family has many members with a range of channel messages.

Typical models are: EMP 30/52/53/54/61/73/74/81/62/82/83/400W/600/800/810/811/820/821/822/828/830/835/830 / EMP 6100/6000/6110/1810/1815/1825/7800/7850/7900/7950/8300/9300/S1/S1H

In the back of each user’s manual is a list of typical channel selection messages,

Channel codes are:
Computer1	:= 'SOURCE 11' + 0D;
Computer2	:= 'SOURCE 21' + 0D;
Computer3	:= 'SOURCE 30' + 0D;
Computer4	:= 'SOURCE 31' + 0D;
Computer5	:= 'SOURCE B1' + 0D;
Video1	:= 'SOURCE 41' + 0D;
Video2	:= 'SOURCE 42' + 0D;
Video3	:= 'SOURCE 14' + 0D;
Video4	:= 'SOURCE 24' + 0D;
Video5	:= 'SOURCE 15' + 0D;
Video6	:= 'SOURCE 25' + 0D;
Video7	:= 'SOURCE 30' + 0D;
Video8	:= 'SOURCE 31' + 0D;
Video9	:= 'SOURCE B2' + 0D;
Video10	:= 'SOURCE B3' + 0D;
Video11	:= 'SOURCE B4' + 0D;
Video12	:= 'SOURCE C4' + 0D;
Video13	:= 'SOURCE C5' + 0D;

//DSUB1 VGA analog-RGB

//DSUB2 VGA analog-RGB

//INPUT3 DVI-D

//INPUT3 D-RGB

//INPUT4 BNC analog-RGB

//Comp Video

//S-Video

//Component on DSUB1 or YCbCr on DSUB1

//Component on DSUB2 or YCbCr on DSUB2

//YCbCr on DSUB1

//YCbCr on DSUB2

//INPUT3 DVI-D

//INPUT3 D-RGB

//INPUT4 BNC COMPONENT RGB-Video

//INPUT4 BNC COMPONENT YCbCr

//INPUT4 BNC COMPONENT YPbPr

//INPUT5 BNC COMPONENT YCbCr

//INPUT5 BNC COMPONENT YPbPr

Any one of these codes can be set into Constant:0/Constant:1 for computer codes and Constant:2/Constant:3 for video codes. (The default is to have Computer1 (above) as the “Computer” channel and Video1 as the “Video” channel. Setting OPT1 switch ON will swap Video1 and Video2 channels, making S-Video the video default.)

•OPT7 handshake mode and power on panel connection blink codes available.

RS232 connections to Epson ESC-VP21 projectors

These use a 9-pin-D9 male on the projector, female on cable. Communications is at 9600 baud 8N1.

Function/Direction	T440 “projector”	Epson ESC-VP21 “Control”
	Connection	Port Connector
Ground	Ground	9-pin D-sub pin 5
Data from T440 to projector	Tx	9-pin D-sub pin 2 (RXD)
Reply data from projector to T440	Rx	9-pin D-sub pin 3 (TXD)
Plus 9 volt CTS/DTR to projector	N/C	N/C

1 2 3 4 5

6 7 8 9

D-sub 9 female solder side

After installation wiring of any projector to a T440, use a multimeter to check voltages of –9 on BOTH TX and RX pins in any installation, as described in the troubleshooting part of this manual.

T440 Users manual V021/B, © JED Microprocessors Pty Ltd Nov 17th 2008 Page 4