Com port setting, Com port-enabling serial data buffer, Fig. 18 – Atop Technology SE5002 User manual User Manual

Page 19: Fig. 19

User manual Version 1.3

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Ethernet Serial Server SE5002

Enter 2 on “Input choice and enter (1~5):” of COM1, the following screen shall appear; then proceed to
assign the COM port alias, set baud rate and parity, determine number of data bit and stop bit, and decide
on the need of flow control (Fig. 18)

Fig. 18. Com port setting

Enter 3 from “Input choice and enter (1~5):” of COM1, by default COM port serial data buffer is enabled
meaning that when TCP/IP Ethernet connection is broken, serial data collected from serial device will be
emptied on SE5002 once TCP/IP connection is resumed, the serial data will be sent through Ethernet
connection, one may disable it if one wish(Fig. 19)

Fig. 19. Com port-Enabling serial data buffer

Packet delimiter is a way of controlling the number of packets in a serial communication. It is designed to
keep packets intack. SE5002 provides two ways in parameter setting: 1. Packet delimiter timer and 2 .
Character pattern terminator . By default, packet delimiter timer is 1 ms. The range of packet delimiter timer
is 0 to 30,000 msec, as shown in Fig. 20. If “character pattern is selected, for a data stream ended with
“0x0a04”, then the entire data buffer of the serial device is transmitted.