GE MDS iNET Series Reference Manual page 153

Error Code
30H
D0H
A.4 MODBUS to MODBUS TCP Server Protocol
Introduction
NOTE:
This section assumes you have an understanding of Ethernet networking, TCP/IP, and Modbus
serial protocols. For more information, refer to the Modbus-IDA Organization web site:
http://www.modbus.org.
The iNET implementation of the MODBUS to MODBUS TCP server protocol is limited to act as one of the
following:
• A Modbus/TCP client on the LAN port
• A Modbus ASCII server on the serial port
• A Modbus RTU server (user configurable) on the serial port
NOTE:
Modbus/TCP functionality is only available on the COM2 port of the iNET/ENI transceiver.
NOTE:
All requests are sent using TCP on registered port 502.
NOTE:
The PLC's User ID must match the last octet of the iNET Remote's IP address. See Figure A-11.
MODBUS/TCP Server Configuration
Perform the following procedure to configure the
1. Press A to select the listening port for the MODBUS/TCP server. See Figure A-12. The default is port
. Then press to continue.
502 N
05-2806A01, Rev. L
Table A-2. iNET/ENI Error Codes (Continued)
Description of Error Condition
Target node responded with
not there, disconnected, or shutdown
Caused by one of the following:
• No IP address configured for the network or
ENI not configured for Node Address used
• Bad command: unsolicited message error
• Bad address: unsolicited message error
• No privilege: unsolicited message error
iNET Remote
IP Address: 192.158.16.23
Figure A-11. PLC User ID Example
MODBUS/TCP SERVER
MDS iNET Series Reference Manual
Remote station host is
.
PLC
User ID: 23
IP protocol settings:
141