Chitra Venkataraman
Member
- Join Date
- Dec 2004
- Posts
- 4
My basic setup is a Automation Direct DL250 CPU with an D2-RMSM remote master. The master unit should be connected to two remote T1K-RSSS slaves and uses the RM protocol for communication. Each slave has several I/O modules. See attached file for a more detailed desciption of the module layout and memory mapping.
My problem is with the current setup (see memory mapping) I have no problem to read all analog and discrete I/O's of the first slave. However, I run into problems with reading the second slave e.g. if I want to set a discrete output (in T1K-08TR) in the V-memory location V3501, it does not work. I cannot even read the memory location of a discrete input.
I suspect that this is due to limitations in the master's I/O capacity per slave. I have been told that this is limited to 512 points per slave and totally to 2048 points. However, I read in the manaul (section 1-11) that the physical limitation depends on the CPU and one can increase the remote I/O capacity if one uses V-memory type addressing. But I do not quite understand how this should work.
If anybody has experience with this type of a setup and knows how to overcome this problem, I would greatly appreciate your support. I find that technical support from Automation Direct has not been very useful or efficient.
Thanks.
My problem is with the current setup (see memory mapping) I have no problem to read all analog and discrete I/O's of the first slave. However, I run into problems with reading the second slave e.g. if I want to set a discrete output (in T1K-08TR) in the V-memory location V3501, it does not work. I cannot even read the memory location of a discrete input.
I suspect that this is due to limitations in the master's I/O capacity per slave. I have been told that this is limited to 512 points per slave and totally to 2048 points. However, I read in the manaul (section 1-11) that the physical limitation depends on the CPU and one can increase the remote I/O capacity if one uses V-memory type addressing. But I do not quite understand how this should work.
If anybody has experience with this type of a setup and knows how to overcome this problem, I would greatly appreciate your support. I find that technical support from Automation Direct has not been very useful or efficient.
Thanks.