Eaton ELC-CAENET User manual

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4 ELC-CAENET
To ensure correct installation and operation of ELC-CAENET, please read this chapter carefully
before using your ELC-CAENET. The ELC-CAENET is an Ethernet remote I/O adapter product
that connects ELC I/O modules to Ethernet networks using either EtherNet/IP or Modbus TCP
protocols. To configure the ELC-CAENET module use EATON’s ELCSoft and ECISoft or an
embedded web page on the device.
The ELC-CAENET supports Modbus TCP server protocol and can be used as remote I/O from
a PLC or other Modbus TCP client devices. The ELC-CAENET can also be used as a Modbus
TCP gateway, supporting the conversion from Modbus TCP commands to Modbus ASCII/RTU.
The ELC-ENET also supports EtherNet/IP adapter functionality to provide remote I/O for a PLC
capable of being an EtherNet/IP scanner.
4.1 Features
zSupports EtherNet/IP Adapter communication with up to 8 connections.
zSupports Modbus TCP server communications with up to 16 connections.
z10/100 Mbps transmission speed; MDI/MDI-X auto-detect.
zSupports up to 16 expansion modules, including up to 8 analog modules
zSupports a maximum of 256 digital Input and Output points.
zIntegrated Modbus TCP to Modbus serial gateway (Allows a Modbus TCP client to
connect to 32 devices on a local modbus serial link).
zSupports embedded “local logic functions”: IF-THEN, counter, timer and real-time clock.
Able to operate independently without control from a main PLC.
zReal time clock synchronized via NTP
zConfigurable using embedded web page or Eaton ELCSoft/ECISoft.
4.2 Specifications
Ethernet interface
Interface RJ-45 with Auto MDI/MDIX
Transmission method 802.3, 802.3u
Transmission cable Category 5e, 100m (Max)
Transmission speed 10/100 Mbps Auto-Detection
Communication
protocol
ICMP, IP, TCP, UDP, DHCP, SMTP, NTP, MODBUS TCP,
ETHERNET/IP
Serial communication interface (COM1)
Interface Mini Din
Transmission method RS-232
Communication speed 19,200 bps
Communication format Stop bit: 1; Parity bit: None; Data bit: 8

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Transmission cable ELC-CBPCELC3
Serial communication interface (COM2)
Interface 3 PIN feed-through terminal
Transmission method RS-485
Transmission distance 4,000 ft (@19.2K)
Communication speed 110, 150, 300, 600, 1,200, 2,400, 4,800, 9,600, 19,200,
38,400, 57,600, 115,200 bps
Communication format Stop bit: 1, 2; Parity bit: None, Odd, Even; Data bit: 7, 8
Communication
protocol Modbus ASCII、Modbus RTU
Environment
Noise immunity
ESD (IEC 61131-2, IEC 61000-4-2): 8KV Air Discharge
EFT (IEC 61131-2, IEC 61000-4-4): Power Line:±2KV, Digital
Input: ±2KV,
Communication I/O: ±2KV
RS (IEC 61131-2, IEC 61000-4-3): 80MHz ~ 100MHz, 10V/m.
1.4GHz ~ 2.0GHz, 10V/m
Conducted Susceptibility Test (EN61000-4-6, IEC61131-2 9.10):
150kHz ~ 80MHz, 3V/m
Surge Test (Biwave IEC61132-2, IEC61000-4-5): Power line
0.5KV DM, Ethernet 0.5KV CM, RS-485 0.5KV CM
Operation 0ºC ~ 55ºC (temperature), 50 ~ 95% (humidity), pollution
degree 2
Storage -25ºC ~ 70ºC (temperature), 5 ~ 95% (humidity)
Shock/vibration
immunity
International standards: IEC61131-2, IEC 68-2-6 (TEST
Fc)/IEC61131-2 & IEC 68-2-27 (TEST Ea)
Certificates
Electrical specification
Power supply voltage 24VDC (-15% ~ 20%) (with DC input polarity reverse
protection)
Power fuse capacity 1.85A/30VDC, Polyswitch
Power consumption 2W
Insulation voltage 500VDC
Weight 116g

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4.3 Product Profile & Outline
4.3.1 Dimension
60
37.4
33 90
STOP
RS-485 RS-232
ELC-CAENET
RUN
BAT.LOW
POWER
RUN
LAN
Unit: mm
4.3.2 Product Profile
4
9
18
87
10
1
2
3
5
6
11
14 17
15
13
16
1
9
12
21
20
STOP
RS-485 RS-232
ELC-CAENET
RUN
BAT.LOW
POWER
RUN
LAN
1. POWER indicator 12. RS-485 communication port
2. RUN indicator 13. Extension module positioning hole
3. BAT.LOW indicator 14. Nameplate
4. RUN/STOP switch 15. Extension port
5. RS-232 indicator 16. DIN rail (35mm)
6. RS-485 indicator 17. Extension module fixing clip
7. LINK/ACK indicator 18. DIN rail clip
8. SPEED indicator 19. Power supply port
9. Digital display 20. 3P terminal block (standard accessory)

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10. Ethernet communication port
11. RS-232 communication port
21. Power supply connection cable (standard
accessory)
4.3.3 LED Indicators
LED Color Function
POWER Green Power supply indication
RUN Green RUN/STOP indication
BAT.LOW Red Battery in low power indication
RS-232 Yellow Displays communication status of RS-232 port
RS-485 Yellow Displays communication status of RS-485 port
LINK/ACT Green Displays the status of network
SPEED Yellow Displays the speed of network connection
4.3.4 RUN/STOP Switch
Status Explanation
1. RUN indicator on ELC-CAENET is ON.
2. Analog input/output modules are in RUN status.
RUN
3. Local logic functions are running.
1. Analog input/output module switches from RUN to STOP
status.
RUN ÆSTOP
2. Y points on digital input/output module are all OFF.
1. RUN indicator on ELC-CAENET is OFF.
2. Analog input/output modules are in STOP status.
STOP
3. Local logic function halted.
1. ELC-CAENET re-detects the modules on the I/O bus.
STOP
RUN
STOP ÆRUN 2. Analog input/output modules switch from STOP to RUN
status.
4.3.5 Ethernet RJ-45 PIN Definition
PIN Signal Definition PIN Signal Definition
1 Tx+ Positive pole for data
transmission 5 -- N/C
2 Tx- Negative pole for data
transmission 6 Rx-
Negative pole for data
receiving
3 Rx+ Positive pole for data
receiving 7 -- N/C
4 -- N/C 8 -- N/C

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4.3.6 RS-232 PIN Definition
PIN Signal Definition PIN Signal Definition
1 -- N/C 5 Tx Transmission data
2 -- N/C 6 -- N/C
3 -- N/C 7 -- N/C
4 Rx Reception data 8 GND Ground
4.3.7 RS-485 PIN Definition
PIN Signal Definition
1 SG Signal Ground
2 D- Negative pole for data
3 D+ Positive pole for data
1
2
3
4.4 Installation & Wiring
In this section, we will describe how to connect the ELC-CAENET module to other devices and
the network.
4.4.1 Connecting the ELC-CAENET to ELC I/O Modules
zOpen the extension clips on the top and bottom of the ELC-CAENET. Connect the
extension port of the ELC-CAENET and the I/O module.
zFasten the extension clips on the I/O module. Make sure the contact between the modules
is secure.
ELC-AN02NANN ELC-EX16NNDR
POWER
RUN
BAT.LOW
RUN
STOP
ELC-CAENET
LAN
RS-232
RS-485
4.4.2 Installing the ELC-CAENET and ELC I/O Modules onto a DIN Rail
zUse standard 35mm DIN rail.
zOpen the DIN rail clips on ELC-CAENET and the I/O modules and insert the modules onto
the rail.
zPress the clips to secure the modules onto the rail.

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ELC-EX16NNDR
ELC-AN02NANN
35mm DIN rail
4.4.3 How to Connect the ELC-CAENET to the Local Area Network
Connect ELC-CAENET to the Ethernet switch using CAT-5e twisted pair cable. Since the
ELC-CAENET has Auto MDI/MDIX functionality, a cross over cable is not requried to connect
directly to a PC. See below for the connection between the PC and ELC-CAENET modules:
ELC-PV28
RUN
STOP
ELCAN02NANN
ELC-EX08NNSN
ELC-EX16NNDR
ELC-AN04ANNN
ELC-TC04ANNN
ELC-PT04ANNN
Ethernet
ELC-CAENET DI/DO AI/AO
ELC-PV28
COM2
PC
ELC-COENETM
ELC-COENETM
4.5 Internal data structure for the ELC-CAENET
This section describes the internal data structure for the ELC-CAENET module. These data
elements can be accessed from Modbus TCP, EtherNet/IP and the local logic features
described in later sections of this manual
4.5.1 Basic Registers (BR)
BR# Attribute Content Explanation Default Latched
0 R Model name
Set up by the system; read only. The model
code of ELC-CAENET= H’0600. H’0600 YES

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BR# Attribute Content Explanation Default Latched
1 R Firmware version
the current firmware verision in hex, e.g. V1.2 is
indicated as high byte = 0x01 and low byte =
0x20.
YES
2 R
Release date of
the version
the data in decimal form. 10,000s digit and
1,000s digit are for “month”; 100s digit and 10s
digit are for “day”. For 1s digit: 0 = morning; 1 =
afternoon.
Example: 12191 indicates the version released
in the afternoon of December 19.
YES
3 R/W
Start/Stop PLC
function NO
4 Reserved NO
5 R/W
COM2
communication
settings
RS-485 communication settings. Please refer to
the table of baud rate setting and
communication format setting.
H’0368 YES
6 R/W Address For setting up the station address K’1 YES
7 R
Number of DI
points Range: 0 ~ 256 NO
8 R
Number of DO
points Range: 0 ~ 256 NO
9 R Error code Displaying the errors. Please refer to the table
of error codes. NO
10 Reserved NO
11 R/W
Communication
time-out
For setting up the communication time-out (ms)
in Modbus TCP mode. K’5000 YES
12 R/W
Communication
delay time
For setting up the minimum interval time
between every communication datum. K’0 YES
13 R/W
TCP connection
idle time
For setting up idle time for TCP communication.
Unit: second K’30 YES
14 ~ 22 Reserved NO
23 R
Number of
analog I/O
modules
Max. 8 NO
24 R
ID of the 1st
analog I/O
module
ID of the 1st analog I/O module NO
25 R
ID of the 2nd
analog I/O
module
ID of the 2nd analog I/O module NO
26 R
ID of the 3rd
analog I/O
module
ID of the 3rd analog I/O module NO
27 R
ID of the 4th
analog I/O
module
ID of the 4th analog I/O module NO
28 R
ID of the 5th
analog I/O
module
ID of the 5th analog I/O module NO
29 R
ID of the 6th
analog I/O
module
ID of the 6th analog I/O module NO
30 R
ID of the 7th
analog I/O
module
ID of the 7th analog I/O module NO

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BR# Attribute Content Explanation Default Latched
31 R
ID of the 8th
analog I/O
module
ID of the 8th analog I/O module NO
32 ~ 49 Reserved NO
50 R/W RTC settings Settings of the real-time clock NO
51 R/W Year Range: 1970 ~ 2099 YES
52 R/W Week Range: 1 ~ 7 YES
53 R/W Month Range: 1 ~ 12 YES
54 R/W Day Range: 1 ~ 31 YES
55 R/W Hour Range: 0 ~ 23 YES
56 R/W Minute Range: 0 ~ 59 YES
57 R/W Second Range: 0 ~ 59 YES
58 ~ 59 Reserved NO
60 Reserved NO
61 ~ 63 Reserved 0 NO
Symbol “R” refers to ready only; “R/W” refers to read and write.
4.5.2 Basic Registers (BR) descriptions
BR#0: Model Name
Model code of ELC-CAENET = H’0600.
BR#1: Firmware Version
The firmware version of ELC-CAENET is displayed in hex, e.g. H’0100 indicates version V1.00
BR#2: Release Date of the Version
The date in decimal form 10,000s digit and 1,000s digit are for “month”; 100s digit and 10s digit
are for “day”. For 1s digit: 0 = morning; 1 = afternoon.
Example: 12191 indicate the version released in the afternoon of December 19.
BR#5: COM2 Communication Settings
Description:
b0 ~ b3
Interface Explanation
Data Baud
rate (bps) Data Baud rate (bps) Data Baud rate (bps)
0x1 110 0x6 2,400 0xB 57,600
0x2 150 0x7 4,800 0xC 115,200
0x3 300 0x8 9,600
0x4 600 0x9 19,200
Content COM2
RS-485
0x5 1,200 0xA 38,400
b4 ~ b7

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b7 b6 ~ b5 b4
Explanation
Stop bit
0: 1 Stop bit
1: 2 Stop bits
Parity bit
00 : None parity bit
01 : Odd parity bit
11 : Even parity bit
Data bit
0 : 7 Data bits
1 : 8 Data bits
0000 (0) 7-N-1 0011 (3) 8-O-1 1000 (8) 7-N-2 1011 (B) 8-O-2
0001 (1) 8-N-1 0110 (6) 7-E-1 1001 (9) 8-N-2 1110 (E) 7-E-2
Content
0010 (2) 7-O-1 0111 (7) 8-E-1 1010 (A) 7-O-2 1111 (F) 8-E-2
b8 ~ b15
Content Explanation
0x02 Modbus RTU Master
0x03 Modbus ASCII Master
BR#6: Address
For assigning or reading the Modbus serial address of the ELC-CAENET. The address will be
displayed in the message display after being set up. Range: 1 ~ 247.
BR#7: Number of Digital Input Points
Read the number of digital input points from BR#7. Range: 0 ~ 256. Max. I/O points: 256. The
number of input points is autiomatically detected by the ELC-CAENET based on the connected
I/O cards.
BR#8: Number of Digital Output Points
Read the number of digital output points from BR#8. Range: 0 ~ 256. Max. I/O points: 256. The
number of output points is autiomatically detected by the ELC-CAENET based on the
connected I/O cards.
BR#9: Error Code
Description:
Error code = 0 refers to no error occurring.
Code Indication How to correct
F0 Returning to default setting --
F1 ELC-CAENET being powered --
F2 Power supply in low voltage Check if the power supply of the module is functioning
normally.
F3 Internal error. Manufacturing error.
1. Check if the settings of local logic are incorrect.
2. Re-power ELC-CAENET. If the error still exists, try
step 3.
3. Reset ELC-CAENET. If the error still exists, send
the module back to the manufacturer for repair.
F5 Network connection error Check if ELC-CAENET is properly connected to the

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Code Indication How to correct
network.
F6 TCP connection limit exceeded
Check if the number of client connections exceeds the
maximum. (8 EtherNet/IP or 16 Modbus TCP
connections)
F7 RS-485 setting error Check if the RS-485 communication format is correct.
F8 IP addressing error
1. DHCP request failure.
2. IP address invalid.
3. Subnet mask invalid.
4. Gateway does not exist in the same subnet.
5. Returning to default setting.
F9 Extension module error
Check if the configuration of the extension module
has been modified. If the error still exists, check if the
number of I/O points exceeds the maximum and
whether the there are more than 8 analog/specialty
I/O modules connected.
04 Slave error
0b No response from station
1. Check if ELC-CAENET and RS-485 are properly
connected.
2. Check if the RS-485 transmission speed is
consistent with that of other nodes on the serial
network.
BR#11: Communication Time-out (ms)
Communication time-out. Default = 5,000ms. For example, if you wish to set up the
communication time-out to 7 seconds manually, write 7000 to BR#11. Range: 5 ~ 65,535.
BR#12: Communication Delay Time (ms)
Minimum interval time between every Modbus command. Default = 0ms. For example, if you
wish to set up the communication delay time to 100ms manually, write 100 into BR#12. Range:
0 ~ 65,535.
BR#13: TCP Connection Idle Time (s)
TCP connection idle time. Default = 30 seconds. For example, if you wish to set up the idle
time to 7 seconds manually, write 7 into BR#13. Range: 5 ~ 65,535.
BR#23: Number of Analog/Specialty I/O Modules
The number of Analog/Specialty modules detected at “go to run”. Max. 8.
BR#24 ~ #31: ID of the 1st ~ 8th Analog I/O Module
The ID of the 1st ~ 8th analog I/O modules are read from BR#24 ~ BR#31.