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valh7
@valh7
New Member
Joined: Feb 11, 2025
Last seen: Sep 19, 2026
Topics: 6 / Replies: 24
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RE: Ignition trend shows a flat line while the level control valve is visibly hunting

Leave LT301 at 1 second at least. One tag won't hurt the database.

3 weeks ago
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RE: CompactLogix 5069 misses a 5 ms reject pulse from a checkweigher, fine in Emulate

Off delay relay went in the panel yesterday, 50ms, wired between the checkweigher contact and point 6. Three shifts, zero misses, QA count matches the...

3 weeks ago
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RE: 1769-IF4 flow reading jumps 3 percent every scan, low flow alarm chatters

Log both. Raw for the curves, filtered for the alarm.

3 weeks ago
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RE: 1756-L71 bottle count is exactly double on one line, ONS and ADD, sensor is clean

Deleted the JSR in Startup_Old, then the routine, nothing else in it was referenced. Line 6 counted 1 per bottle for the whole shift, first time since...

3 weeks ago
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RE: 1756-IF8 reads underrange with a new 2-wire 4-20mA pressure transmitter

Wired it the way marekw said, the capped 24V through the transmitter into IN-3, minus to i RTN-3. Meter in series 5.2mA with the chiller off, tag read...

3 weeks ago
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RE: CompactLogix faults T03:C16 every time the remote Point I/O rack loses power

Talked to the OEM this morning first, they said the box was a default in their template, no reason. Unticked it, downloaded at the shift changeover, t...

3 weeks ago
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RE: Logix UDT member added, Kepware tags and the MSG on the other PLC read shifted values

L33ER done at the Tuesday changeover, UDT imported from the L5X export, downloaded, MSG data lines up again. One member in the middle moved the offse...

3 weeks ago
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RE: Ignition Modbus TCP to a power meter, kW float register pair reads 1.27e+30

Same fix, different address type. HRUI for unsigned 32-bit, not HRI. Check what you typed there.

3 weeks ago
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RE: CompactLogix 5069 misses a 5 ms reject pulse from a checkweigher, fine in Emulate

Tried that. Periodic task at 2ms with the reject rung, RPI 1ms on the IB16. One miss in about 400 packs now instead of one in 40. Better, not good eno...

3 weeks ago
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RE: Point I/O modules past slot 8 fault intermittently, 1734-AENTR itself is fine

EP24DC in at slot 9 Thursday night, 24V and common on it, tree done offline first with Find and Replace on the aliases like rsdave said. Downloaded, a...

3 weeks ago
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RE: Logix UDT member added, Kepware tags and the MSG on the other PLC read shifted values

Regenerated the Kepware tags and restarted the runtime, and the line screens are right now, about 20 minutes' work. L33ER's still shifted, I haven't t...

3 weeks ago
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RE: 1756-IF8 reads underrange with a new 2-wire 4-20mA pressure transmitter

The old one had 24V on two extra terminals, yeah, that's the 4-wire. I capped those two wires off when I pulled it. The new one has two terminals tota...

3 weeks ago
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RE: 1756-L71 bottle count is exactly double on one line, ONS and ADD, sensor is clean

V30 like I said. Cross ref shows two JSRs. One in MainRoutine where I expected it, and one in a routine called Startup_Old behind its own ONS off the ...

3 weeks ago
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RE: CompactLogix faults T03:C16 every time the remote Point I/O rack loses power

Always done it as far as anyone knows, this cell came in 2021 from an OEM. Connection tab: RPI 20ms, Inhibit Module unticked, Major Fault On Controlle...

3 weeks ago
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RE: CompactLogix 5069 misses a 5 ms reject pulse from a checkweigher, fine in Emulate

V33, controller firmware matches. Plain IB16, RPI 5ms. Continuous task last scan 12ms, max 20ms since the speed change, the program's got bigger too. ...

3 weeks ago
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