PLC-5 & SLC 500 migration: Off PLC-5 and SLC 500, on your schedule.
PLC-5 and SLC 500 programs moved to ControlLogix and CompactLogix in Studio 5000. Scoped at the machine, cut over in your outage window, and proven on the floor before we leave.
Why now
The spare-parts shelf sets the schedule.
- 01
The processor is end of life
Rockwell announced end of life for the remaining PLC-5 processors in 2017, and RSLogix 5 reached the end of its life cycle at the end of 2025. Spares come from the surplus market now.
- 02
One card from a long outage
A failed 1771 card or processor with no spare on the shelf is how most migrations get scheduled: in the middle of a shift. Planned, a migration fits an outage window. Unplanned, it becomes one.
- 03
SLC 500 is next in line
SLC 500 is late in its life cycle, and Rockwell points new systems at CompactLogix. Moving both together leaves one platform, one software package, and one set of spares.
What moves where
Old iron in, current platform out.
The usual path. The right one for your line comes out of the audit: I/O count, networks, and how much outage you can give it.
- PLC-5 processor, 1771 chassisControlLogix
- SLC 500 processor, 1746 I/OCompactLogix, or ControlLogix
- RSLogix 5 and RSLogix 500Studio 5000 Logix Designer
- DH+, Remote I/O, DH-485EtherNet/IP
- PanelView Standard and older HMIsFactoryTalk View ME and SE
How we migrate
Planned at the machine. Proven on the floor.
- 01
Audit at the machine
The program, the I/O list, the networks, and everything that talks to the PLC: HMIs, drives, SCADA, and the other controllers on DH+.
- 02
Convert, then clean up
Conversion tools translate most of the logic, but block transfers, addressing, and messaging work differently in Logix. We review and restructure the converted code so the next person can read it.
- 03
Pick the hardware path
Swap it all at once, or move the controller first and keep the 1771 or 1746 I/O and field wiring in place for now. We lay out the options and the outage each one needs.
- 04
Test before cutover
Logic, I/O mapping, and HMI tags checked before the outage, with a way back to the old rack if the line needs it.
- 05
Cut over and prove
On-site through the outage and startup: cycle, safety, and operator acceptance before we leave, then documentation and a clean handoff.
Straight answers
Migration, answered.
Can the PLC-5 program be converted automatically?
Most of it. Rockwell's conversion tools translate the bulk of the ladder logic, but block transfers, addressing, and messaging change on Logix, and a converted program still needs review and testing by someone who knows the process before it runs your line.
Do we have to rewire the I/O?
Not always. Depending on the line, the existing I/O and field wiring can stay in place while the controller moves first, or wiring conversion systems can swap the chassis without pulling field wiring. We lay out the options at the machine.
Should SLC 500 go to CompactLogix or ControlLogix?
Usually CompactLogix for an SLC 500-sized system, and ControlLogix for PLC-5-sized ones or where you need the chassis capacity. We size it from your I/O count, your networks, and your plans for the line.
Can the migration be done in stages?
Yes. Controller first and I/O later, one line at a time, or the whole cell in one outage. The plan follows your outage windows, not the other way around.
What should I send with a migration RFQ?
The RSP (PLC-5) or RSS (SLC 500) file, the I/O list or drawings if you have them, a photo of the rack, and your outage window. Zip the files and upload them with the form on this page. Line down? Call (959) 232-1657, 24/7.
Request a quote
Send the RSP or RSS file.
Platform, symptom, and outage window. It lands in the sales inbox, and we come back with a plan, not a brochure.
New customer? Send a competing quote too, and we will tell you if we can come in 15% under it.
Line down? (959) 232-1657, 24/7Related