Easy Maintenance

The NA-4010 Ethernet network adapter can be expanded by adding up to 32 I/O modules. It provide spring type, removable terminal blocks (RTBs) that allow you to preserve field wiring before replacing an I/O expansion module. Each I/O expansion module can be replaced quickly and easily.


Serial Communication Parameters
Parity None, Even, Odd
Data Bits 7, 8
Stop Bits 1, 2
Baudrate 1200 to 115200 bps
Signals • NA-4020: Data+, Data-, Gnd, DIR (5-contact terminal block)
• NA-4021: TxD, RxD, Gnd (9-pin D-Sub female)
Software Features
Protocols Modbus/RTU, Modbus/ASCII
Modbus Address 00 to 99 (set by rotary switches)
Programming Library MXIO DLL library for Windows; Supports Visual Basic, Visual C++, Borland C++ Builder, .net, VB/VC.NET
Number of I/O Modules Supported Max. of 32
Power Requirements
Power Input 11 to 28.8 VDC, 24 VDC typical
Power Consumption 70 mA @ 24 VDC
Current for I/O Modules Max. 1.5 A @ 5 VDC
MTBF (mean time between failure)
NA-4020 Time 4,695,360 hrs
NA-4021 Time: 4,721,640 hrs
Database Telcordia (Bellcore)