5800 Download: Softlogix

He opened the VM console. The SoftLogix chassis was displayed virtually—a backplane with an ethernet module, a controller, and a virtual backplane link to a real 1756-ENBT card that connected to the physical I/O. His laptop was connected via a dedicated control network VLAN.

50%... "Clearing memory." Alex held his breath. This was the danger zone. If the SoftLogix service crashed now, the server would need a full reboot.

A groan. "Alex, batch 880 is at T+3 hours. We're in the exothermic hold phase. How long is the actual download ?"

90%... "Starting controller."

"Total of almost three minutes without control?"

Alex’s finger hovered over the download button. His heart pounded. With a physical PLC, he could pull the key. With SoftLogix, there was no key. Just a dialogue box.

The progress bar crawled. 10%... "Verifying project." 30%... "Stopping controller." The ping to the I/O rack started timing out. Request timed out. Request timed out. The valves on the physical tank went silent. The pump VFDs froze at their last speed. softlogix 5800 download

Marcus’s voice came back: "We’re stable. All loops re-synced. The blip was acceptable. You’re good."

70%... "Loading project."

He clicked .

The ping resumed. Reply from 192.168.1.10: time=2ms. Then a flood of replies. The I/O rack was back. In RSLogix, the controller status icon blinked from "Program" to "Running." The Green Run LED on the virtual chassis turned solid.

Alex opened three windows side-by-side. Window 1: RSLogix 5000 with the modified routine. Window 2: The SoftLogix chassis monitor. Window 3: A continuous ping to the remote I/O rack's IP address (192.168.1.10). He also had a VNC connection to the server itself.