SiriusMark
Member
I'm working on creating an application for an HMI. Mostly, I'm trying to learn the process, it is doubtful that this app will ever go into full scale use. I'm trying to create a page on my HMI that basically shows all the permissives and what state they are in. However, when I try to tie the indicator I've created to the specific point in the PLC, I run into a problem. The PLC is a micrologic 1500 and I'm using RSLogix 500 to interface with it.
My permissives are coming into the PLC as I/O points, specifically in the I1 bin file. Through the ladder logic they are getting dumped into a binary file that the PLC program uses for access. However, from FactoryTalk I can't seem to access individual bits in the I1 bin OR the B3 bin. I have no problem pulling a tag from individual integer bits, but when I try to connect to the binaries or the Inputs, all I can see are complete words.
So for instance, I want to show the voltage monitor bit. It is B3:0/12 in the PLC. When I use FT's tag browser to browse the PLC and find the tage, all I can access is B3:0, the entire word.
Is this normal? And if so, would I have to somehow "copy" the Input or Binary bins I need into unused integer bins in order to make this work?
My permissives are coming into the PLC as I/O points, specifically in the I1 bin file. Through the ladder logic they are getting dumped into a binary file that the PLC program uses for access. However, from FactoryTalk I can't seem to access individual bits in the I1 bin OR the B3 bin. I have no problem pulling a tag from individual integer bits, but when I try to connect to the binaries or the Inputs, all I can see are complete words.
So for instance, I want to show the voltage monitor bit. It is B3:0/12 in the PLC. When I use FT's tag browser to browse the PLC and find the tage, all I can access is B3:0, the entire word.
Is this normal? And if so, would I have to somehow "copy" the Input or Binary bins I need into unused integer bins in order to make this work?