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Topic:
Kramer Switcher RS-232
This thread has 8 replies. Displaying all posts.
Post 1 made on Wednesday October 17, 2007 at 11:39
ebecker
Long Time Member
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Posts:
September 2003
337
trying to control a kramer switcher via rs232, can someone look at my strings and let me know what you think?



Macro for button: DVD \ VCR

Projo On
Serial Port 1 (19200 8N1): 02H 00H 00H 00H 00H 02H
Screen Down
Relay Control: Relay 1 Closed
Relay Control: Relay 2 Open
Kramer On
Serial Port 2 (9600 8N1): Y0x2060x2000x2010x200xD
Kramer Source Video YC-1
Serial Port 2 (9600 8N1): Y0x2030x2000x2040x200xD
DVD / VCR On
If DVD \ VCR is OFF then
Samsung / DVD/ VCR (DVD) / DVD-V2000 Power
ELSE





Here is the Kramer doc page 13 talks about the protocol

[Link: kramerelectronics.com]
Post 2 made on Wednesday October 17, 2007 at 13:28
TOOOLDAND TOOGRUMPY
Long Time Member
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Posts:
October 2007
351
ok,

this should be straight forward,

there are examples in that protocol doc.

copy and paste it into TTD as the asci code, clicking the hex button will then convert it between HEX and ASCII and back again.

power on 'L 48B7' (hex 4c 20 34 38 42 37)
standby 'L49B6' (4c 20 34 39 42 36)
YC-1 'L 3CC3' (4c 20 33 43 43 33)

you will need to use a null modem adapter.

it will take a short while between powering on and being ready to accept the string to change to the YC-1 input.

hope this is of help.
OP | Post 3 made on Wednesday October 17, 2007 at 14:30
ebecker
Long Time Member
Joined:
Posts:
September 2003
337
i had that code set originally here it is now, null modem adaptor installed, verified the routing is going to port 2 on rp6 where the kramer is


Macro for button: DVD \ VCR

Projo On
Serial Port 1 (38400 8N1): 02H 00H 00H 00H 00H 02H
Screen Down
Relay Control: Relay 1 Closed
Relay Control: Relay 2 Open
Kramer On
Serial Port 2 (9600 8N1): L 48B7
Pause for 5.0 seconds
Kramer Source Video YC-1
Serial Port 2 (9600 8N1): L 1AE5
DVD / VCR On
If DVD \ VCR is OFF then
Samsung / DVD/ VCR (DVD) / DVD-V2000 Power
ELSE






do i need carriage returns or anything?
Post 4 made on Wednesday October 17, 2007 at 14:53
TOOOLDAND TOOGRUMPY
Long Time Member
Joined:
Posts:
October 2007
351
i have never had to use carriage returns before when using Kramer.
sometimes if operation is erratic i have inserted upto an 8ms delay between characters to make things more reliable, but only do this if you have an issue.

just another point to help you along your way the ASCII code 'L 1AE5' is for video 1, not YC-1.

ratherthan have a 5 second delay move the power string to earlier in the macro, and leave the YC-1 string to the last command in the macro. possibly still use a couple of second delay immediately before it, but it meens that the other commands are run with out delay.

unrelated, how are you trying to control the screen to come down?
OP | Post 5 made on Wednesday October 17, 2007 at 15:19
ebecker
Long Time Member
Joined:
Posts:
September 2003
337
the screens are being done via the relay. they are older screens that were here when we came in they use one contact closure to go down and another to go up
Post 6 made on Wednesday October 17, 2007 at 15:45
TOOOLDAND TOOGRUMPY
Long Time Member
Joined:
Posts:
October 2007
351
thats a control type ive never come across, the way your macro is, just seemed strange to be controlling a n/v closing contact, or mains raise/lower.
OP | Post 7 made on Wednesday October 17, 2007 at 20:17
ebecker
Long Time Member
Joined:
Posts:
September 2003
337
Still having some issues, this is the part I question


it makes up the string in the following segments

Field 1 "L"
Field 2 " "
Field 3 "xx"
Field 4 "xx"
Field 5 0x0d


the example it gives is "L 12ED" + enter for menu on

in the example what happened to field 5? do i need a carriage return thereby making the RTI string ASCII "L 12EB/r"
OP | Post 8 made on Wednesday October 17, 2007 at 20:17
ebecker
Long Time Member
Joined:
Posts:
September 2003
337
Duplicate Post

Last edited by ebecker on October 17, 2007 20:25.
Post 9 made on Thursday October 18, 2007 at 01:35
estech
Active Member
Joined:
Posts:
August 2002
584
On October 17, 2007 at 20:17, ebecker said...
Still having some issues, this is the part I question

it makes up the string in the following segments

Field 1 "L"

Field 2 " "

Field 3 "xx"

Field 4 "xx"

Field 5 0x0d

the example it gives is "L 12ED" + enter for menu on

in the example what happened to field 5? do i need a carriage
return thereby making the RTI string ASCII "L 12EB/r"

Field 5 is the carriage return, shown in hex (0D).
If you enter the string as ascii, don't forget to use "backslash r", not forward slash, for a carriage return.

Your example should be:
L 12EB\r

or in HEX
4C 20 31 32 45 42 0D
Pay no attention to that man behind the curtain.


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