ahigginbotham

We are preparing for a large project where I would like to use Unitronics as the local MMI and back-up pump control. I have already evaluated the V1210 with some IO and linked it to a CompactLogix using ModbusTCP (the CompactLogix nows supports that in code). We are also considering using DNP3 as the communications to the host. If I go that route I will have to support 3 types of communications methods in the PLC. It would be nice for Unitronics to support either Ethernet/IP or DNP3 over IP. I also considered the MicroLogix 1400 for the PLC but it only supports either ModbusTCP or DNP3/IP you cannot do both. I prefer this all be Ethernet. Since this is the wishlist forum, those are my wishes. Anyone else like these suggestions?

I can't delete this so I will just say I figured it out. I was hung up on the falling trigger and not setting a bit for the oneshot in my rung after. I was trying to just use the -|N|- when I needed to store it first since I needed to use it as an examine on and examing off in two branches. Works great now.

I have an application I am converting from Allen Bradley code. In the Allen Bradley I am using the OSF block. This block has a storage bit and an output bit that retains state after the transition. I tried to use a -|N|- but the coil will not retain the state unless I make it a -(S)-. Then I have no easy way to reset it. Is there a simple way to achive this same functionality in VisiLogic? OSF Storage and Output Bits Operation Rung State Transition Storage Bit Output Bit true-to-false (one scan) bit is reset bit is set false-to-false bit is reset bit is reset false-to-true and true-to-true bit is set bit is reset Ideas? Andy