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RS485 Network Adapter (Modbus)

Product Page @ Moxa Site MOXA Major Lines
Mfg Part Number:  NA-4020  
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Price: $499.00 + Free Shipping
Quantity:
In Stock: 3
No Sales Tax except these states
, PO and Wire.


Serial Communication
Baud rate
1200 to 115200 bps
Data bits
7, 8
Parity bit
None, Even, Odd
Stop bits
1, 2
Signals
NA-4020: Data+, Data-, Gnd, Vout (5V), DIR
NA-4021: TxD, RxD, Gnd
Software Features
Protocols
Modbus/RTU, Modbus/ASCII
Modbus Address
00 to 99 by rotary switches
Utility
ioAdmin
Programming library
MXIO DLL library for Windows supporting Visual Basic, Visual C++, Borland C++ Builder
Max. I/O modules
Up to 32 I/O expansion modules
System Power
Power input
11 to 28.8 VDC, 24 VDC typical
Power consumption
70 mA typical @ 24 VDC
Current for I/O modules
Max. 1.5A @ 5 VDC
Field power
Rated voltage
11 to 28.8 VDC, 24 VDC typical
Current in field power contact
Max. 10A
Protection
System power to I/O driver
2 kV rms optical isolation
Environmental
Operating Temperature
-20 to 60°C, 5 to 90%RH
Storage Temperature
-45 to 85°C
Vibration
IEC-68-2-6, 2G in operation
Agency Approvals
EMC

CE EN-55082, EN-55081

Safety
UL 508
Weight
Net weight
150g


Pin Assignment


 

Specification

Power Requirements
Power Consumption 70 mA @ 24 VDC
Power Input 11 to 28.8 VDC, 24 VDC typical
Current for I/O Modules Max. 1.5 A @ 5 VDC
Serial Communication Parameters
Signals • NA-4020: Data+, Data-, Gnd, DIR (5-contact terminal block)
• NA-4021: TxD, RxD, Gnd (9-pin D-Sub female)
Data Bits 7, 8
Parity None, Even, Odd
Stop Bits 1, 2
Baudrate 1200 to 115200 bps
Software Features
Protocols Modbus/RTU, Modbus/ASCII
Number of I/O Modules Supported Max. of 32
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
MTBF (mean time between failure)
Database Telcordia (Bellcore)
NA-4020 Time 4,695,360 hrs
NA-4021 Time: 4,721,640 hrs
[0] [True] [Yes] [No] [No]

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