The TM251MESC logic controller by Schneider Electric is designed for industrial machine control with dual Ethernet ports, CANopen port, and serial line port.
Product ModelTM251MESC
Product ID34398
Stock on Request
Last updated: 8/29/2026
Key Features
1
FeatureDual Ethernet ports for enhanced connectivity and redundancy.
2
FeatureCANopen port for seamless integration with CANopen networks.
3
FeatureSerial line port (RJ45, RS-232 or RS-485) for versatile communication options.
4
Feature24 Vdc power supply with an inrush current of 50 A.
5
FeatureFlexible and scalable design for easy upgrades to higher performance platforms.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
USB port mini B USB 2.0Non isolated serial link serial RJ45 RS232/RS485Dual-port Ethernet RJ45CANopen J1939 SUB-D 9
Supply
Serial)serial link supply 5 V, <200 mA
Transmission rate
1.2...115.2 kbit/s (115.2 kbit/s by default) 49.2 ft (15 m) RS4851.2...115.2 kbit/s (115.2 kbit/s by default) 9.8 ft (3 m) RS232480 Mbit/s 9.8 ft (3 m) USB
Communication port protocol
USB port USB - SoMachine-NetworkNon isolated serial link Modbus master/slave - RTU/ASCII or SoMachine-Network
Port Ethernet
Ethernet 10BASE-T/100BASE-TX - 2 copper cable
Web services
Web server
Communication service
DHCP clientDownloadingEthernet/IP slave deviceIEC VAR ACCESSModbus TCP clientModbus TCP serverModbus TCP slave deviceMonitoringNGVLProgrammingUpdating firmwareSMS notificationsFTP client/serverSNMP client/serverSQL clientSend and receive email from the controller based on TCP/UDP libraryWeb server (WebVisu & XWeb system)OPC UA serverDNS client
for PWR 1 LED (green) for RUN 1 LED (green) for module error (ERR) 1 LED (red) for I/O error (I/O) 1 LED (red) for SD card access (SD) 1 LED (green) for BAT 1 LED (red) for Ethernet port activity 1 LED (green) for SL 1 LED (green) for bus fault on TM4 (TM4) 1 LED (red) for CANopen run 1 LED (green) for CANopen error 1 LED (green)
Electrical connection
removable screw terminal block power supply pitch 5.08 mm)
Insulation
Non-insulated between supply and internal logicBetween supply and ground 500 V AC
marking
CE
Surge withstand
1 kV shielded cable common mode IEC 61000-4-51 kV power lines common mode IEC 61000-4-50.5 kV power lines differential mode IEC 61000-4-5
Mounting support
Top hat type TH35-15 rail IEC 60715Top hat type TH35-7.5 rail IEC 60715 plate or panel with fixing kit
Height
3.5 in (90 mm)
Depth
3.7 in (95 mm)
Width
2.1 in (54 mm)
Net Weight
0.49 lb(US) (0.22 kg)
Standards
ANSI/ISA 12-12-01CSA C22.2 No 142CSA C22.2 No 213IEC 61131-2:2007Marine specification (LR, ABS, DNV, GL)UL 508
Product Certifications
cULusCEUKCADNV-GLABSLR
Resistance to electrostatic discharge
8 kV in air IEC 61000-4-24 kV on contact IEC 61000-4-2
