VC3-3232MDT-6 Veichi VC3-3232MDT-6 PLC: 32 inputs / 32 outputs, transistor outputs, 24VDC supply, RS232/485, CANopen, Ethernet.

VC3-3232MDT-6 is the 32-point VC3 transistor DC version with six 200kHz pulse channels: 32 digital inputs, 32 transistor outputs, 24V DC supply. RS232/RS485 ports, CANopen and built-in Ethernet. An in-between take on the larger MDT: six fast channels and a full set of discrete signals in a panel with a single 24V DC.

Typical applications:

• A 32-point line in a DC panel with up to six axes.
• Multi-channel dosing or feed on a large machine without AC supply.
• Equipment that needs pulse headroom beyond four channels.

Note: for four channels there is VC3-3232MDT-4, for eight there is VC3-3232MDT. The direct AC counterpart is VC3-3232MAT-6; the smaller 16-point DC version is VC3-1616MDT-6; the relay DC version is VC3-3232MDR.

Veichi VC3 — dual-core mid-range PLC with built-in Ethernet

VC3 is the third generation of Veichi controllers on a dual-core processor. We reach for it where VC1's basic logic falls short but a full EtherCAT bus is still overkill: 64,000 program steps, 0.065µs basic instruction, eight pulse inputs and eight outputs at 200kHz with S-curve ramping. The main reason to choose VC3 is the onboard ports: Ethernet (Modbus-TCP, up to 16 slaves) and CANopen (301/402 profiles) are built in, not added through a separate module.

This is a workhorse controller for a mid-complexity machine that needs both an Ethernet link to SCADA or an HMI and a few pulse-driven positioning axes. RS485, RS232 and USB Type-C for commissioning, up to 15 right-side expansion modules (up to 8 of them special), 8 external interrupts and a real-time clock.

What VC3 is good for

• Machines exchanging data over Ethernet: a line where the PLC feeds SCADA or polls several slaves over Modbus-TCP with no extra module.
• Pulse positioning: feed, cut-to-length, dosing on steppers and servos — eight 200kHz channels with S-curve.
• Linking VFDs over CANopen: controlling a group of Veichi VFDs over the 402 fieldbus.
• Packaging, textile, wood and metalworking: 16 or 32 onboard points plus modules for the rest of the signals.

How VC3 differs from neighbouring series

In practice VC3 is the sweet spot: it gives the built-in Ethernet and CANopen that VC1 lacks, without carrying the cost and complexity of the VC5 EtherCAT platform. If you need coordinated motion across many axes over a bus, that is VC5 or VH600 territory.

When VC3 is not the right fit

• You need coordinated bus motion, interpolation or an electronic cam — go for VC5 or VH600 with EtherCAT.
• The task is purely logic and budget-driven, with no Ethernet out of the box — VC1 will do.
• You need heavier pulse and motion functions in the VC3 form factor — look at the VC3M motion variant (transistor outputs + 200kHz, motion-control function).
• You work inside another brand's ecosystem — compare with Delta or Fatek.

Our experience with VC3

VC3 gets picked when a machine has "grown up" into a network: the typical buyer question is "can I get a link to the HMI and the VFDs without an Ethernet module". Yes — the port is on the board, and that is often the deciding argument against VC1. We recommend settling on the output type up front: for relay use the MAR/MDR versions, for fast pulse to steppers/servos the transistor MAT/MDT. Buyers often pair it with Veichi operator panels on the same machine.