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9

Hardware Features

COM1 communication mode DIP switch (SW2)

Open the communication housing case and adjust the DIP switch as follows:

The baud rate is automatically detected and adjusted within the range of 
4800 to 38400 bps. No separate speed setting is required. Once a speed is 
assigned, it is maintained until there is no communication for more than 
one minute. Then, the speed is automatically detected and configured 
again. 

The termination resistance is connected to the end of the communication 
line to remove mutual communication interferences or signal distortions 
that can occur between connected controllers and peripherals.
Use an external connector for termination for COM2 port.

No.

Status

Description

1

Off

Enables RS-232C communication for COM1

On

Enables RS-485 communication for COM1
(Used for hand-held programmer and multi-drop 
connections, etc.)

2

Off

Disables termination for RS-485 communication

On

Enables termination for RS-485 communication

COM1:RS232C/RS485
9pin female D-Sub

24V dc auxiliary output

Panel fixing hole

Battery mounting holder

Input terminal

Expansion unit connector

Status LEDs

LED

Description

RUN

On when processor is in operation.
Flashes when processor is pausing.

PROG

On when the program can be modified or 
downloaded.

ERR

On when processor fault is detected.
Flashes when the battery is not installed 
or needs to be replaced.

COM1
COM2

On when power is supplied normally.
Flashes when communication is 
progressing via the port

Power supply
connector

COM2:
RS232C/RS485
8pin female 
RJ45

DIP switch for COM1
- Selects RS232 or RS485
- Sets termination resistance

Output 
terminals

Operation mode selector switch

Mode

Description

RUN

Processor is in operation. 

Program editing is not allowed.

RMT

Remote control status. 

Run or pause operation, program 

editing and downloading are allowed.

PROG

Processor is in stop mode. 

Program editing is allowed.

IMPORTANT

Summary of Contents for NX7-28ADR

Page 1: ...e 8 Cables 8 Hardware Features 9 Specifications 10 General Specifications 10 Power Supply Specifications 10 Performance Specifications 11 Input Specifications 12 Output Specifications 13 Communication...

Page 2: ...r liability for actual use based on the examples and diagrams No patent liability is assumed by OE Max Controls with respect to use of information circuits equipment or software described in this manu...

Page 3: ...orm a special operation during run such as program editing operation control or forced output make sure to perform it after ensuring safety Do not connect an external device or a hand held programmer...

Page 4: ...25 in Input output and communication cables should be separated from power cables Give at least 200 mm space between them Otherwise generated noise may cause product malfunction We recommend installib...

Page 5: ...ause they melt deform or discolor PCB boards Precautions for use of power Run your PLC system only after the I O devices and motor devices have started For example first power on in the PROG mode then...

Page 6: ...t NX7 48DDR 28 point dc input 20 point relay output NX7 48DDT 28 point dc input 20 point transistor output Catalog number Input power I O specifications Remarks NX7 28EDR 24V dcb power supply 16 point...

Page 7: ...connections etc 2 Off Disables termination for RS 485 communication On Enables termination for RS 485 communication COM1 RS232C RS485 9pin female D Sub 24V dc auxiliary output Panel fixing hole Batte...

Page 8: ...or 10 min Dust condition No conductive dust Chemicals No cutting oil and organic solvents Corrosive gas No corrosive gas Shock immunity 98m S2 or more 4 times X Y Z each direction Grounding Class 3 gr...

Page 9: ...Counter TC or TIM 256 channels Timer Counter Set value range 0 to 65535 Timer 0 01 second TC000 to TC063 64 channels 0 1 second TC064 to TC255 192 channels Counter TC000 to TC255 256 channels Data re...

Page 10: ...ange 10 8 to 26 4V Max input current 10 mA or less Min On voltage current 10 0V or more 3 0 mA or more Max Off voltage current 5V or less 0 6 mA or less Input impedance Approx 3 6 K Response time Off...

Page 11: ...dc Load voltage range 85 to 264V ac 10 to 30V dc Max load current 2A per point 6A per common for 6 points Response time Off On 10 ms or less On Off 10 ms or less Surge absorber Not applicable Interna...

Page 12: ...dc Polarity common Sink type NPN Max load current 0 4A per point 1 0A per common Max inrush current 3A 10 ms or less Off state leak current 100 A or less Respons e time Off On 1 ms or less On Off 1 ms...

Page 13: ...ex asynchronous polling Data bit 8 bits Parity None Stop bit 1 bit Communication distance RS 232 15 m or less RS 485 1 2 Km or less Termination resistance COM1 adjusted by the internal DIP switch COM2...

Page 14: ...ase and expansion 48 points Installation Dimensions 28 points 48 points 100 mm 90 mm 79 0 mm 35 mm DIN rail mounting holder 76 6 mm 146 mm 90 mm 100 mm unit mm 146 0 mm 81 0 mm 31 9 in 9 5 3 0 87 0 mm...

Page 15: ...act defects leading to product damage or personal injury Make sure to disconnect power to the controller system before performing installation wiring maintenance and cleaning Never touch the power ter...

Page 16: ...tance or Class D grounding to prevent voltage mixing between the frame ground and the power input terminals Ground the frame ground terminal with a dedicated Class 3 100 or less of ground resistance o...

Page 17: ...NX7 Installation Instructions OE MAX Controls www oemax com Copyright 2004 OE MAX Controls...

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