// Heidenhain · Error code
PLC 345 "Tool carrier overcurrent"
on Gildemeister CTX
It appears during tool change operations — the tool turret draws more current than the control expects. It can have several causes, all of them in the tool carrier area.
// Workshop
SINCE 1994
Gildemeister specialist
UNDER 24 H
Reply on business days
// Important first
We do not publish specific diagnostic steps.
Error codes are context-dependent. What is the right response on a CTX 400 with EPL2 would cause a second failure on a GDM with Eltropilot. Instead of a half-truth guide we give only the component class here — the real diagnosis we do by phone, in 5–10 minutes, free of charge and without promises.
// What we can say publicly
PLC 345 —
the broad picture.
// Component class
Where the fault sits.
Tool turret drive, encoder, mechanical wear
// Affected machines
Where the code appears.
CTX 210 V3, CTX 310, CTX 410, CTX 510, CTX 620 with a Heidenhain control.
What the code means specifically on your machine depends on the year of manufacture, the control, the constellation and any previous maintenance. From 30 years of workshop experience we know the typical patterns — and we classify them by phone.
Please note first
What you should not do yourself.
PLC 345 can be caused by contamination, an encoder problem, drive wear or a bearing defect. These causes can only be told apart on the test bench — a wrong diagnosis makes the code come back.
In concrete terms: before any repair on a Gildemeister CNC, back up the parameters and NC programs. Replace components only after a diagnosis, never on suspicion. If in doubt: call us. Those 5 minutes often save a four-figure mis-investment.
// What you can do now
Narrow down PLC 345
on the phone.
In 5–10 minutes we clarify with you by phone what is really going on with your Gildemeister machine. Free of charge. No sales pressure. We know the code from workshop practice — no algorithm, no bot.
+49 5221 · 9944770Workshop hotline · Mon–Fri 8 am–4 pm · Reply within 24h on business days
// Prefer it in writing
// Related error codes
Other codes,
similar component class.
// All codes
Gildemeister Error Code Overview
// Heidenhain
PLC 200 — tool turret, switches, PLC logic
// Heidenhain
K7302 — Internal Software Error
// Gildemeister
Error code 1208 — emergency stop circuit
// Gildemeister
Error code 4706 — axis plain-text fault
// Heidenhain EPL
EPL1 failure — control does not boot
// FREQUENTLY ASKED QUESTIONS
What does PLC 345 mean on a Gildemeister?
It appears during tool change operations — the tool turret draws more current than the control expects. It can have several causes, all of them in the tool carrier area.
Which Gildemeister machines are affected?
CTX 210 V3, CTX 310, CTX 410, CTX 510, CTX 620 with a Heidenhain control.
What is usually behind it?
From 30 years of workshop practice: mostly the tool turret drive, the encoder or mechanical wear. An exact diagnosis needs a machine-specific workshop check or a preliminary phone diagnosis with ESDI.
What should I not do myself?
PLC 345 can be caused by contamination, an encoder problem, drive wear or a bearing defect. These causes can only be told apart on the test bench — a wrong diagnosis makes the code come back.