Introduction
Legacy Twido PLC networks often stall when a CANopen master module fails. The TWDNCO1M from Schneider Electric restores that missing link. It is a CANopen bus master module built for the Twido range. The module uses a 9-way male SUB-D connector and two twisted shielded pairs. Engineers use it to connect Twido controllers to CANopen device networks without redesigning the whole panel.
Technical Specifications
The TWDNCO1M supports 16 RPDO and 16 TPDO channels. That gives you 16 receive and 16 transmit process data objects for cyclic I/O exchange. The module runs on an external 24 V DC supply. Current draw is 50 mA at 5 V DC and 50.5 mA at 24 V DC. Power dissipation reaches 1.2 W at 24 V DC. These low figures matter in dense cabinets where heat and power budgets are tight.
Transmission rates are selectable: 125 kbit/s over 500 m, 250 kbit/s over 250 m, and 500 kbit/s over 100 m. You pick the rate that matches your bus length and cycle time. The module follows CANopen M10 DR 303-2 and M10 DS 301 V4.02. It carries CE marking and UL certification. The IP20 rating suits clean control rooms, not washdown areas. Operating temperature spans 0…55 °C, and storage temperature spans -25…70 °C.
Upgrade and Replacement Guide
Angle D: Replacement and upgrade guide. The TWDNCO1M is a direct-fit module for specific Twido controllers. Compatible bases include TWDLMDA20DRT, TWDLCAE40DRF, TWDLMDA20DTK, TWDLCDA40DRF, TWDLCAA40DRF, TWDLMDA40DUK, TWDLCAA24DRF, TWDLMDA40DTK, TWDLCDE40DRF, TWDLCDA24DRF, TWDLMDA20DUK. Only one module fits per base controller. If your panel already runs one of these bases, you can add or replace the CANopen master without changing the CPU.
Before ordering, confirm your base controller part number. Also confirm your bus speed and cable length. The module supports up to 16 slaves. If your network exceeds that count, you need a different architecture. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Installation and Setup
Mount the module in the Twido base and secure the SUB-D connector. Use shielded twisted pairs for the CANopen bus. Keep the shield grounded at one end to reduce noise. Set the transmission rate to match your network length. The status LED labeled PWR shows power state. Check it after power-up. Do not exceed 24 V DC on the external supply. Keep the module within 0…55 °C ambient air temperature. Allow clearance for airflow around the cabinet.
Maintenance and Reliability
Inspect the SUB-D connector and cable shield periodically. Look for loose pins or corrosion. Check the PWR LED during routine rounds. Verify that cabinet temperature stays within the operating range. Dust and heat shorten module life. Clean the panel exterior only. Do not open the module or attempt internal repairs. Follow Schneider Electric’s safety manual for all service work. A spare TWDNCO1M on the shelf cuts downtime when a network fault occurs.
Compatibility and Integration
The TWDNCO1M integrates with Twido PLC bases listed above. It speaks CANopen M10 DR 303-2 and M10 DS 301 V4.02. That makes it compatible with standard CANopen slaves from many vendors. You can connect drives, I/O blocks, and sensors that follow the same profile. The 9-way SUB-D connector is a common industrial interface. Keep bus length within the limits for your chosen bit rate. Use 125 kbit/s for long runs up to 500 m. Use 500 kbit/s for short runs up to 100 m.
Selection Guide
Before you buy, check these points. First, confirm your Twido base controller is in the compatibility list. Second, count your CANopen slaves. The limit is 16. Third, measure your bus length and choose a bit rate. Fourth, confirm you have a 24 V DC external supply. Fifth, check the ambient temperature range. SpareTechPLC stocks industrial automation parts and can help you verify fit. Contact them with your base controller part number and network details.
FAQs
Q: What is the TWDNCO1M used for?
A: It adds CANopen master capability to compatible Schneider Twido PLC bases. It handles 16 RPDO and 16 TPDO channels.
Q: How many slaves can I connect?
A: The module supports up to 16 slaves on the CANopen bus.
Q: What supply voltage does it need?
A: It uses an external 24 V DC supply. Current draw is 50 mA at 5 V DC and 50.5 mA at 24 V DC.
Q: What bit rates are available?
A: You can select 125 kbit/s, 250 kbit/s, or 500 kbit/s. Each rate has a different maximum bus length.
Q: Is the TWDNCO1M still available?
A: Please verify current lifecycle status and availability with SpareTechPLC before ordering.
