I

I/O-Modules
Fox Series
DeviceNet - Coupler

Product Description

The CNX21 Base Module is the basis of the digital input/output Submodules for operation in the DeviceNet. Depending on the application, the four modules can be configured as inputs or outputs with a wide range of different modules.

The base module contains the DeviceNet Interface, power supply and four slots for plugging in the submodules.

Power Supply

You connect the power supply for the control logic via the four-pin connector terminal X10 on the upper left side of the module. The power can be either used from the DeviceNet™ network or from a separate power supply.

Pin Assignments DeviceNet™

Pin	Signal	Description
1	V-	GND control voltage supply
2	CAN_L	CAN Data Low
3	Shield	Shield
4	CAN_H	CAN Data High
5	V+	+24 V control voltage supply

Diagnostic LED's

Four LED's provide information about the status of the module:

Module-Status (MS LED)

LED	Description
OFF	No Power - Module (Connector X10)
Green	Bridge OK
Red	Wrong Data Size

Network-Status (NS LED)

LED	Description
OFF	No Power - Module (Connector X10)
Flashing Green	Not online, no connection to master established
Solid Green	online, connected to master
Flashing Red	Timeout, I/O connection
Solid Red	No connection to Master, Duplicate MAC-ID or bus off

Power LED DeviceNet™ (5 VCN)

LED	Description
OFF	No Power - DeviceNet™ (V+ & V-)
Orange	Power OK - DeviceNet™

Power LED Base Module (5 V)

LED	Description
OFF	No Power - Module (Connector X10)
Orange	Power OK - Module

Address & Baudrate

DeviceNet™ Address

NA0 - NA5 set the DeviceNet™ node number (0-63) of the module. The node number is binary coded. Lowest bit0 is switch NA0 and highest bit is NA5.
Example: Node 6 NA1 and NA2 ON all other (NA0, NA3, NA4, NA5) remain OFF.

DeviceNet™ Baudrate

DR0 and DR1 set the baud rate of the module.

Example:
125KB DR0 = OFF and DR1 = OFF
250KB DR0 = ON and DR1 = OFF
500KB DR0 = OFF and DR1 = ON
500KB DR0 = ON and DR1 = ON

Assembly

You mount the DeviceNet™ base module off-center of the machine or in the control cabinet by simply fastening it to a device mounting DIN rail.

Technical Data

Inputs/Outputs	Max.of 64 digital I/Os or. max of 16 Analog I/Os , or a mixture of both via up to four galvanically decoupled submodules ( max. 4 submodules ), divided into four ports that can be fitted byte-by-byte with input or output modules (MDI-8,MDO-8 etc.). LED status indicator on all MD-modules
Input Specifications	Refer to input modules for CNX21
Output Specifications	Refer to output modules for CNX21
Output Monitoring	Watchdog circuit
Connections	5 pole DeviceNet plug ( Phoenix Contact )
Supply Voltage	24 VDC (± 20%)
Current Consumption	approx. 0.1 A (without submodules)
Housing	closed, can be screw-mounted on a device mounting rail complying with DIN EN 50022, 50035
Dimensions (W x H x D)	CNX21: 315 * 76 * 68 mm
Weight	approx.. 750 g
Operating Temperature	±0..+55 °C
Storage Temperature	-20..+70 °C

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