RS232 comminication

Hi Guys ,

i'm try to use PAC rs232 port to control some 3rd party devices, but currently some problem facing.

trying to control via hyper terminal it work find with the command,
but when i try with PAC rs232 is was unable to control with the same command.
I try to supply 24VAC to PAC.

Print Screen shown below 1st picture

PAC to computer com port


The command of PAC shown as below
once GetLightingState(1) = ON then
begin
SetLightingState(3, ON);
OpenSerial(1, 1, 9600, 8, scOneStopBit, scNoFlowControl, scNoParity);
WriteSerial(1, #91#77#32#51#48#32#57#57#93);
CloseSerial(1);
end;



I try send out above command via hyper terminal.
The controller have response
2nd picture

 

Initialisation String?

If your not already doing so include in your logic an Initialisation String.

OpenSerial (1,1,9600,8,1,0,0); or similar

Further info can be found in Logic.pdf in Manual folder installed with PICED.

Please note that you have placed this thread on a area related to C-Bus Serial Protocol use. Which is used to communicate directly to C-Bus via a PC interface.
The RS232 provided on a PACA or Touchscreen as an interpretation to suit devices predefined codes of other devices.

 

Thx DonB,

try with the way initialisation with the code of
Initialisation
OpenSerial(1, 1, 9600, 8, scOneStopBit, scNoFlowControl, scNoParity);

Module
once GetLightingState(1) = ON then
begin
SetLightingState(3, ON);
WriteSerial(1, '[M 30 99]');
end;

with the above coding,it was able to receive code and show at windows hyper terminal
[M 30 99]
but it was fail to trigger 3rd party controller

PACA rs232 port 1 -> 3rd party controller

If i send out the same code [M 30 99] via hyper terminal to third party devices it was able to trigger 3rd party controller

Computer with COM port -> 3rd party controller


is it because of PACA issue?

 

When you are using hyperterminal, you may be sending carriage return/line feed characters as well. You do not have these in your logic code. It is possible that this is the problem.

 

Try adding a carriage return (CR) to the end of the string. Most 3rd party devices require either a carriage return or line feed to signify the end of the command. When you enter commands into hyper terminal you naturally end then with a Return key.

e.g. WriteSerial(1, '[M 30 99]'#13);

(Looks like Darren can type faster than I can )