Question

[Lars1354922223]

Hello,I cannot type Danish so therefore I type in English.I got an idea, I do not know if it is possible. If I take an output module 24 volt and connect one output on that module to a data input on another output module 24. Is it possible to use that single output on the first module to trigger the second module 1-8? Sending the bit 1-8 with the first module, there must me some kind of special programming to do this, but if it is possible then it can go over the 128 limit. This would be ideal for signal lamps, and then you can have 8 – 24 volt signal lamps and only one output on the module to control them. /Lars Sjöström

[Henrik Hovmoller]

HiExcellent idea. However the IHC controls the output modules by means of a serial data stream. The output is... Just an output....However it would not require very much to modify a single output module to serve as a 256 port LED driver, if that is your only requirement.

[Lars1354922223]

Is it not possible to simulate the RS232 communication by sending pulses? I have developed some programming for that, the program is in Swedish but I add the file here anyway. My program however does not seem to work for this purpose, I have tried it with no success.. [file name=rs232.vis size=150312]http://www.ihc-user.dk/media/kunena/attachments/legacy/files/rs232.vis[/file]

rs232.vis

[Henrik Hovmoller]

HiI seriously doubt you can make the output module respond fast enough. The command sequence is according to LK about 10ms long and at least 16bit wide. This means that in order to make the output act like a data port it needs to toggle 16 times faster than the command that controls it, witch by nature is impossible.Again if you only need to light up LEDs there are MUCH smarter ways of doing it, it does require a bit of cheap additional hardware though.