com port handling with Citect Scada

[AliBahar 0]

two computers communicate with each other using DNP3 protocol based on rs232. the PC#1 acts as master and it handles data transmission/reception with citect scada. PC#2 acts as slave and it performs data communication and analysis using C++ console which is created using visual studio. problem:I want to do opening and closing COM port of PC#1 using citect scada software. but I don't know how it can be done?

[cmo 0]

You can execute external programs using the Cicode command Exec. Maybe you could write a powershell script to open and close the port?

[michael G 2]

Cicode using ComOpen http://webhelp.citect.com/vijeo/AutoMerge/CicodeReferenceWeb/content/ComOpen.html and it is possible that you have not given enough information to get the correct answer Why are you wanting to open and close the port? Edited 9 Aug 2015 by michael G

[AliBahar 0]

because the master must be able to handle link arbitrarily even if it does not want to communicate with slave