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+-- Forum: Products (https://www.comfortforums.com/forum-3.html)
+--- Forum: UCMs (https://www.comfortforums.com/forum-146.html)
+--- Thread: Serial Ucm (/thread-1399.html)
- dcrera - 03-12-2009
Hi
I writing a serial driver that interfaces with Comfort.
Is there a way I can see any activitity on Comfort\'s UCM via Comfigurator or any other software ?
Thanks
- admin - 03-12-2009
In Comfigurator, the Monitor I/O window allows you to see all communications between the PC and the UCM. This includes reports of events etc
The Comfort Bus Monitor allows all communications on the Comfort Bus to be monitored. If you highlight any line there is a description of the message
What sort of application are you writing
- dcrera - 03-12-2009
Hi,
The UCM is connected to a third party device which sends serial data to Comfort.
Comfort\'s UCM therefore has no access to the PC\'s com port.
Thanks
- admin - 03-12-2009
If you need to see the communication between the UCM and the other device you need to connect the serial data lines on pin 2 and 3 to another Rs232 port. You will only be able to see one side of the transmission at a time ie UCM to device or Device to UCM perhaps using a switch
- dcrera - 03-12-2009
Can I have a schematic for this ? Please !!
Thanks
- admin - 03-12-2009
see attached
This is a connection cable between the UCM and another 3rd party serial device assuming that that device has a female DB9 connector just like the UCM
Hence the UCM is connected to the 3rd party device via a Male to Male DB9 connection. Both UCM and the 3rd party device will Transmit data on pin 2 and Receive Data on Pin 3 (being DCE devices). This is why the pins 2 and 3 on both connectors must be crossed over (2 to 3 and 3 to 2)
The monitoring cable which goes to the PC goes to Pin 2 of the FEMALE DB9 connector which plugs into the PC (which has a Male DB9). The PC being a DTE receives data on Pin 2
Hence the switch will connect the PC receive Pin to the transmit side of either the UCM or the 3rd party device
See this link for a better description of Rs232 connections http://www.bb-elec.com/bb-elec/literature/tech/faq_rs232_connections_work.pdf
- dcrera - 03-12-2009
Hi
Is it a problem if I duplicate all pins to a 3 way serial D9 connector project box without a switch ?
In this way Comfort can see all
- dcrera - 03-13-2009
Is it possible to make a 3 way serial port ie
PC to Device or PC to UCM. Both will not communicate at the same time thou.
Thanks
- ident - 03-14-2009
If you connect all the pins together, the transmit pins wil be shorted together and will corrupt the transmission. The switch allows you to monitor each direction but not both at a time. More sophisticated circuits may allow you to see both at a time
Otherwise you can use two Rs232 ports to see both sides using two windows
A useful device called a breakout box is shown here http://www.winfordeng.com/products/brktd9.php useful for experimentation purposes
- dcrera - 03-16-2009
Hi,
Thanks for the feed back.
When sending a command string to Comfort\'s UCM eg
LI1234
How is data presented to the UCM or what is representation of LI1234 ?
I am writing a driver and sending LI1234 from a third party control device is represented as $4c$$49$$31$$32$$33$$34$ (which is not recognized by Comfort)
Can you post the UCM\'s data expectation of the LI1234 so that I can debug.
Thanks