CAN Bus
    CAN-8424
 
 
 
 
 
 
 
 
    CAN Bus
 
 
    I-8000 Series
 
     

 
 
       
 


CAN-8424
(I-8420)
DeviceNet Embedded Device with 4 I/O Expansions

   
 
     
 

DeviceNet is one kind of the network protocols based on the CAN bus and mainly used for embedded network for machine control, such as textile machinery, printing machines, injection molding machinery, or packaging machines, etc. DeviceNet is a low level network that provides connections between simple industrial devices (sensors, actuators) and higher level devices (controllers). It allows direct peer to peer data exchange between nodes in an organized and, if necessary, deterministic manner. DeviceNet defines a connection-based scheme to facilitate all application communications. A DeviceNet connection provides a communication path between multiple endpoints. The endpoints of a connection are applications that need to share data.

 
 
The CAN-8424 main unit based on the modular design offers many good features to the users and provides more flexibility in data acquisition and control system. In addition, ICP DAS also presents a CAN-8424 Utility tool to allow users to configure and create the EDS file for the specific IO modules plugged in. Therefore, users can easily apply the CAN-8424 embedded controller in DeviceNet network. The application architecture is demonstrated as follows:
 
 
   
 
CAN-8424 main unit can be plugged in the DCON(/I-8K/I-87K) IO modules to create a customized DeviceNet slave device and application. Before applying the CAN-8424 in DeviceNet applications, users must understand the relationship between these DeviceNet applications and assembly objects within CAN-8424 DeviceNet slave. In order to allow user to easy apply the device on the network, ICP DAS also provides the CAN-8423 Utility tool to configure the IO connection path, assembly and application objects information and create the EDS file of the device.
   
 
 
     
 
The following simple steps show how to use CAN-8x24 in the DeviceNet protocol.

 
     
 
 
 
     
 
¡EAutomotive ¡EFood & Beverage¡EPackaging¡EHigh-speed Assembly
¡EPulp & Paper¡ESemiconductor Fabrication¡EControl System...etc.

   
 
   
 
DeviceNet Version
DeviceNet Specification Volume I & II, Release 2.0
Number of Nodes
64(Max)
Baud Rate
125K, 250K, 500K
Support Message Groups
Group 2 only Server
UCMM
Not Support
I/O Operating Modes
Poll, Bit-Strobe, Change of State/ Cyclic
Device Heartbeat Message
£¾
Device Shutdown Message
£¾
Produce EDS file Dynamically
£¾
No. of Fragment I/O
128 Bytes (Max) (Input/ Output)
MAC ID Setting
Rotary Switch
Baud Rate Setting
Rotary Switch
DeviceNet Status LED
NET, MOD, PWR
   
 
 
   
 
Hardware
CPU
80186, 80 MHz or compatible
SRAM/Flash/EEPROM
512 KB / 512 KB / 16 KB
NVRAM
31 bytes (battery backup, data valid for up to 10 years)
RTC (Real Time Clock)
Yes
Watchdog
Watchdog IC
Expansion Slot
4 slots
CAN Interface
Controller
NXP SJA1000T with 16 MHz clock
Transceiver
NXP 82C250
Channel number
1
Connector
5-pin screwed terminal block (CAN_L, CAN_SHLD, CAN_H, N/A for others)
Baud Rate (bps)
125 k, 250 k, 500 k
Transmission Distance (m)
Depend on baud rate (for example, max. 500 m at 125 kbps )
Isolation
3000 VDC for DC-to-DC, 2500 Vrms for photo-couple
Terminator Resistor
Jumper for 120 £[ terminator resistor
Specification
ISO-11898-2, CAN 2.0
Protocol
DeviceNet Volumn I ver2.0, Volumn II ver2.0
Predefined Master/Slave Connection set
UART Interface

COM 1

RS-232 (For configuration)

COM 1 Connector

9-pin male D-Sub (DTE: RxD, TxD, RTS, CTS, DTR, DSR, RI, GND)
LED
Round LED
PWR LED, NET LED, MOD LED
Power
Power supply
Unregulated +10 ~ +30 VDC
Protection
Power reverse polarity protection, Over-voltage brown-out protection
Power Consumption
2.5 W
Mechanism
Installation
DIN-Rail
Dimensions
188mm x 132mm x 91mm (W x L x H)
Environment
Operating Temp.
-25 ~ 75 ¢J
Storage Temp.
-30 ~ 80 ¢J
Humidity
10 ~ 90% RH, non-condensing
   
 
   
   
     
 
 
 
     
 
 CAN-8424-G (I-8420)
DeviceNet Embedded Device with 4 empty slots
 
     
 
 
 
     
 
EMI Ferrite Split/Snap-On Core
Field-Installation A-coded 5-pin Female
 
     
   
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