Configuring For Modbus/Tcp Server; Ip-To-Serial Application Example - GE MDS iNET Series Reference Manual

2.6.7 Configuring for MODBUS/TCP Server

• —Enable/Disable the serial data port.
Status
• —MODBUS/TCP Server. This is the type of IP port that will be offered by the trans-
IP Protocol
ceiver's serial device server.
•
MODBUS/TCP Server Port
•
MODBUS Serial Format
BUS/RTU]
NOTE:
The only difference between MODBUS/RTU and MODBUS/ASCII is the form of the framing
sequence, error check pattern, and address interpretation.
•
MODBUS Serial Timeout
• —The baud rate of the transceiver's serial port to which the external device is con-
Data Baud Rate
nected.
[1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200; 9600]
• —Byte format of the serial port.
Byte Format
802; 7N1]
• —RTS/CTS handshaking between the transceiver and the connected device.
Flow Control
Disabled; Disabled]
NOTE:
MODBUS/TCP functionality is provided on the COM2 port only.

2.6.8 IP-to-Serial Application Example

You have a choice to use UDP or TCP to establish communications. This will depend on the type of device
you are communicating with at the other end of the IP network. TCP is illustrated in this example.
In TCP mode, the transceiver remains in a passive mode offering a socket for connection. Once a request is
received, data received at the serial port will be sent out through the IP socket and vice versa, until the con-
nection is closed, or the link is interrupted. In this mode, the transceiver behaves the same, whether it is an
Access Point or a Remote (refer to Figure 2-47 and Table 2-1 on Page 59).
NOTE:
The TCP session has a timeout of 10 minutes (600 seconds). If inactive for that time, it will be
closed. The transceiver will offer the port again for connection after this time expires.
58
Figure 2-46. MODBUS/TCP Server Menu
[TCP, UDP, PPP, DF1/EIP, MODBUS/TCP Server; TCP]
—Port on which the MODBUS/TCP Server will listen.
—The desired MODBUS Serial format
—MODBUS serial timeout in milliseconds (ms).
[7N1, 7E1, 701, 7N2, 7E2, 702, 8N1, 8E1, 801, 8N2, 8E2,
MDS iNET Series Reference Manual
Invisible place holder
[0-65535; 502]
[MODBUS/RTU, MODBUS/ASCII; MOD-
[100-65535; 500]
05-2806A01, Rev. L
[Enabled,