Comtrol Modbus TCP Quick Start - Manual (Page 69)

DeviceMaster UP Modbus/TCP Quick Start: 2000477 Rev. G Application Socket Configuration - 69
Application Socket Configuration
8. Set up the Application Rx Packet ID Settings. This is recommended for all application connections and
necessary for installations where multiple connections can be active at one time.
If the start and end of transmission characters are known:
a. Set the Rx Timeout Between Packets to a time that ensures that an entire message is received. Values in
the 60 to 100 millisecond range are typical.
b. Set the STX (Start of Transmission) Rx Detect to the known value. Typical values are:
• none
• Standard STX character: one byte, Byte 1 = 2.
c. Set the ETX (End of Transmission) Rx Detect to the known value. Typical values are:
• none
• Standard ETX character: one byte, Byte 1 = 3
• CR, LF: two bytes, Byte 1 = 13, Byte 2 = 10
If the start and end of transmission characters are not known, set the Rx Timeout Between Packets to a
time that ensures that an entire message is received. Values in the 60 to 100 millisecond are typical.
9. Make sure that Reset Port and Save in Flash are selected and then click Submit when you have
completed configuration.