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MSR128LUS/MSR128LUV USERS MANUAL EM-7375 Rev.2
4.1.5
COMMUNICATION PORT
Select one of the RS-232C ports (COM1 through COM5) of the host PC or Ethernet (TCP/IP) communication.
When TCP/IP is selected, specify also the IP address of the host PC. Be sure to set the same subnet mask as for the
one specifically assigned to the host PC.
Connected device types and node assignments are specified in Setting Menu – Node Setting.
Caution !
1. DO NOT connect one I/O device to both COM and Ethernet ports at once.
2. With the Ethernet communication via Model 72EM(2)-M4 Communication Adaptor, the power supply to the
72EM(2)-M4 must be turned off and on after its cable to the PC is disconnected and re-connected.
HOW TO CONFIRM ETHERNET CONNECTION
If the MSR128LU is not able to establish Ethernet communication showing ‘Connect Error,’ confirm the connection
using ‘ping’ command on the MS-DOS prompt.
1. Connect Error Message
Modbus/TCP Connect Error!! ST = (*,*)
or
Socket connect error!!
(*,*) indicates the station and node numbers of the device detected as error source.
2. MS-DOS Prompt
Select Start menu – Program – Accessories – Command Prompt.
3. PING Command
Enter the following command:
C:\WINDOWS>ping ***.***.***.***
Enter the IP address in decimal representation to (***.***.***.***).
ping ***.***.***.*** with 32 byte data:
Reply from ***.***.***.*** : byte = 32 time < 10ms TTL = 64
Reply from ***.***.***.*** : byte = 32 time < 10ms TTL = 64
Reply from ***.***.***.*** : byte = 32 time < 10ms TTL = 64
Reply from ***.***.***.*** : byte = 32 time < 10ms TTL = 64
Ping statistics for ***.***.***.***
Packets : Sent = 4, Received = 4, Lost = 0 (0% less)
The above messages are shown when the Ethernet is connected normally. If the connection is not established due
to e.g. wrong IP address, messages such as ‘Time Out’ are shown. Reconfirm physical connection between the
devices and the IP address again.