danw
Lifetime Supporting Member
I stumbled onto two noteworthies from Chipkin's web site
1) A free Windows app Modbus master, the does the normal read/writes in various formats, but also claims to scan a network for Modbus slaves. Hmmmm. That could be nifty. Details, description and download at the link below
http://www.chipkin.com/cas-modbus-scanner
2) The site's newsletter has an article on Skype grabbing serial ports, even when Skype is not active. The article recommends a free utility, Process Explorer, for killing Skype's greedy paws. (Process Explorer is a download from places like C-net)
article:
Skype Prevents HyperTerminal From Using Com Port
Sometimes Hyperterminal tells you the port is in use even when you think it is not. Skype likes grabbing your com port especially COM1. When you try to use the port you can't, even after you quit Skype. To remedy this situation, use Process Explorer to find and kill any process using the com port because Skype is not the only offender.
Steps:
1.Download Process Explorer.
2.Unzip and Run the process explorer.
3.Select FIND.
4.Type: serial.
5.You will get a list of processes using the serial ports.
6.Kill them.
An alternative solution:
1.Go to the Control Panel > System.
2.Disable COM1.
3.Reboot and then re-enable it.
http://www.chipkin.com/december-2011-newsletter
1) A free Windows app Modbus master, the does the normal read/writes in various formats, but also claims to scan a network for Modbus slaves. Hmmmm. That could be nifty. Details, description and download at the link below
http://www.chipkin.com/cas-modbus-scanner
2) The site's newsletter has an article on Skype grabbing serial ports, even when Skype is not active. The article recommends a free utility, Process Explorer, for killing Skype's greedy paws. (Process Explorer is a download from places like C-net)
article:
Skype Prevents HyperTerminal From Using Com Port
Sometimes Hyperterminal tells you the port is in use even when you think it is not. Skype likes grabbing your com port especially COM1. When you try to use the port you can't, even after you quit Skype. To remedy this situation, use Process Explorer to find and kill any process using the com port because Skype is not the only offender.
Steps:
1.Download Process Explorer.
2.Unzip and Run the process explorer.
3.Select FIND.
4.Type: serial.
5.You will get a list of processes using the serial ports.
6.Kill them.
An alternative solution:
1.Go to the Control Panel > System.
2.Disable COM1.
3.Reboot and then re-enable it.
http://www.chipkin.com/december-2011-newsletter
