1. M340 Modbus Plus Proxy Link legacy systems to Ethernet
Product Marketing
Connectivity Products

2. Contents Overview Key benefits What’s in the box Key features
Competitive comparison

3. M340 Modbus Plus Proxy Proxy M340
The M340 Modbus Plus Proxy allows the M340 PLC to communicate with legacy Modbus Plus devices
It will allow you to update your control system without replacing the existing network infrastructure
Existing Modbus Plus device applications do not have to be modified to communicate with M340
Proxy
M340
Modbus Plus
Ethernet

4. Connecting legacy Modbus Plus networks to M340/ Ethernet
Web interface
configuration
SCADA
Compact 984
M340
Distributed I/O
ModbusPlus
Proxy
Modbus Plus
Ethernet

5. Key Benefits Reduce commissioning time
On-line configuration lets you configure the proxy simply by using your web browser
Configuration web pages are similar to Concept/Unity Modbus Plus PeerCop & Global data dialogue screens
Supports Global Data broadcasts to all network nodes for easy data exchange
PeerCop provides point to point communications without programming
Increase network reliability and maintainability
Standard diagnostics provide data on all nodes in the network for easy troubleshooting
Dual Modbus Plus ports provide Modbus Plus network redundancy
Reduce total ownership cost
Enable protection of investment in Modbus Plus while moving to Ethernet
Dual Ethernet ports allow connection of both the M340 and the configuration PC to the proxy without requiring an additional switch

6. What’s in the box M340 Modbus Plus Proxy module Mounting plate
Read me first document
Resource CD
M340 User Guide
M340 EGD configuration management utility
Backup Proxy configuration file
Restore Proxy configuration from a file
Generate CSV file of Proxy’s configuration

7. Web configuration
Configure the module using a simple web browser interface
Configuration web pages are similar to Concept/Unity Modbus Plus PeerCop & Global data dialogue screens
Each page has a help button to assist in configuring the Proxy’s parameters

8. Global Data support
The Proxy lets you configure global data in the Modbus Plus network
It enables cyclic broadcast exchanges of global data between participating nodes
The Proxy can broadcast up to 32 words when a node rotates the token
Compact 984
HMI
Node #4
Node #3
Node #21
Token
Node #5
Node #34
PC with Concept
Distributed I/O

9. PeerCop Specific support
The Proxy lets you configure PeerCop Specific in the Modbus Plus network
Cyclic Specific inputs and outputs act as a point-to-point-service
Every message contains one or more receive addresses for transferring data (enables data to be forwarded to several stations without repetition)
Compact 984
HMI
Node #4
Node #3
Token
Node #21
Node #5
Node #34
PC with Concept
Distributed I/O

10. M340 offset functions
Offsets redirect 1x and 3x data from Modbus Plus to M340 PLC
Offsets only apply to functions such as MSTR, SCADA and HMI
Default values will not conflict with converted legacy applications
Default 1x = %M2048, Default 3x = %MW2048
Default PeerCop & Global Data Health write 12 words to %MW3072 in M340 PLC

11. Legacy offset
Legacy offsets address all functions including PeerCop & Global Data legacy compatibility by adding 1 to accommodate for the difference in the starting register location in the M340 PLC when using a converted application.
Starting register in M340 PLC is %M0 and %MW0
Legacy offset redirects to %M1
Legacy offset redirects requests to %MW1

12. M340 EGD routing on Modbus Plus
Supports 5 byte routing on Modbus Plus using Read_Var & Write_Var
Point Read_Var to index and enter routing information

13. Diagnostics capability
Provides Modbus Plus network statistics which includes:
Address and status information for the M340 EGD in its role as a node on the Modbus Plus network
A count of detected Modbus Plus errors
A list of active nodes on the Modbus Plus network

14. Configuration management utility
Windows application to:
Backup Proxy configuration to a file on your PC
Restore Proxy configuration from a file
Generate an Excel report showing only configured values

15. Upgrading proxy firmware
Use Unity Loader to update proxy firmware
Same as for M340 PLC
Unity Loader v2.0 or higher

16. Key hardware features Dual power connection LED’s for diagnostics
Modbus Plus redundancy
Dual Ethernet connection

17. Key hardware features Modbus Plus address switches
Restore factory settings
Modbus Plus address switches
IP settings switches
IP settings labels

18. Product reference number
TCS E G D B 2 3 F 2 4 F A
Miscellaneous
A: Auto sensing
K: C-Coated
F: female/socket
Network 1: Ethernet
Number of Ports
Network 2
F: female/socket
Gateway
Connector Type
Network 1
3: RJ45
4: Sub-D9 straight
Telemecanique
Cabling
System
B: WEB BASIC
Network 2: D: Modbus+
Connector Type
Network 2
3: RJ45
4: Sub-D9 straight
Number of Ports
Network 1

19. Competitive comparison
Schneider
Electric
Compact Schneider
ProSoft
module in an SLC500
PKV 40-MBP
Hilscher
Features
In Rack  
PeerCop Global Data Support
PeerCop Specific Data Support
Modbus Messaging (Server)
Modbus Messaging (Client)
Modbus Plus Dual Port
Dual Ethernet Port
Modbus Plus Diagnostics
Native Progr. Appl. Configuration
Temperature
0-60° C
0-50° C
Embedded power supply
Web based configuration

21. Make the most of your energy

23. Connecting legacy Modbus Plus networks to M340/ Ethernet
Web interface
configuration
Compact 984
HMI
Modbus Plus Proxy
M340
PC with Concept
Distributed I/O
Ethernet
Modbus Plus