The Schneider Electric TM221C16T is a Modicon M221 logic controller: logic controller, Modicon M221, 16 IO, 9 DI, 7 DO, transistor, PNP.
If a machine stops because the PLC has failed, the fastest fix is an identical controller with the program reloaded from the backup; that is why many plants keep one spare M221 of each type in stock.
See our Schneider Electric range.
Technical data
| Schneider reference | TM221C16T |
|---|---|
| Product or component type | Logic controller |
| [Us] rated supply voltage | 24 V DC |
| Discrete input number | 9, discrete input 4 fast input conforming to IEC 61131-2 Type 1 |
| Analogue input number | 2 at 0…10 V |
| Discrete output type | Transistor |
| Discrete output number | 7 transistor 2 fast output |
| Discrete output voltage | 24 V DC |
| Discrete output current | 0.5 A |
| Discrete I/O number | 16 |
| Maximum number of I/O expansion module | 4 (local I/O-Architecture); 11 (remote I/O-Architecture) |
| Supply voltage limits | 20.4 … 28.8 V |
| Inrush current | 35 A |
| Maximum power consumption in W | 10 W at 24 V (with max number of I/O expansion module); 3.9 W at 24 V (without I/O expansion module) |
| Power supply output current | 0.325 A 5 V for expansion bus; 0.15 A 24 V for expansion bus |
| Discrete input logic | Sink or source (positive/negative) |
| Discrete input voltage | 24 V |
| Discrete input voltage type | DC |
| Discrete output logic | Positive logic (source) |
| Memory capacity | 256 kB for user application and data RAM with 10000 instructions; 256 kB for internal variables RAM |
| Integrated connection type | USB port with mini B USB 2.0 connector; Non isolated serial link serial 1 with RJ45 connector and RS485 interface |
| Dimensions (W x H x D) | 95 x 90 x 70 mm |
| Condition | New, original Schneider Electric |
Key characteristics (per Schneider)
- logic controller
- Modicon M221
- 16 IO
- 9 DI
- 7 DO
- transistor
- PNP
Typical applications
- Machine retrofits from older Twido controllers
- Replacement of a failed M221/M241 controller
- Packaging, pumping and conveying machines
- Small process skids and water stations
Compatibility and replacement
Twido controllers (TWD) are discontinued; the M221 is the usual Schneider migration path. Send us the old reference and I/O count and we will suggest the matching model.
Frequently asked questions
Which software do I need?
EcoStruxure Machine Expert – Basic for M221 (free), EcoStruxure Machine Expert for M241.
Relay or transistor outputs?
Relay outputs (R) switch AC or DC loads up to the relay rating; transistor outputs (T) are for fast 24 V DC loads and pulse outputs.
Can I copy the program from the old controller?
Yes, if the old controller still works and is not protected, the application can be uploaded and downloaded to the new unit with the Schneider software.
Does it have Ethernet?
This version has no Ethernet port; it is programmed over USB and communicates over its serial line.
Can I get a price and delivery time?
Prices are quoted on request. Send the order number, quantity and delivery country on WhatsApp and we will reply with price and delivery time; air shipping is usually 5 to 7 days once ready, with a 1-year warranty.
How to order
Message us the order number and quantity. For breakdowns, tell us the delivery address and we will offer the fastest shipping option. If the exact part is discontinued, we confirm the official successor before quoting.
Every part RendatSP supplies is new and original, carries a 1-year warranty and ships worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Send us the order number and quantity on WhatsApp or through the inquiry form and we will quote the same working day. Agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.





