UART Communication issue

[WOODUCK]

Hello guys.

I have an issue that can`t be communicated between COSMOS and Raspberry Pi 3.

Here`s my Rapsberry Pi and minicom setting.
1 baud rate : 9600
2 port : /dev/ttyS0

<fig. 1.1> Raspberry Pi 3 screen with serial1 -> ttyS0

<fig, 1.2> Minicom on Raspberry Pi 3 screen

Here`s COSMOS setting as well.
COSMOS setting
1 baud rate : 9600
2 port : /dev/ttyS0

<fig. 1.3> Command and Telemetry Server with 'attempting' status on COSMOS

<fig. 1.4> Error message on my COSMOS

I set two softwares to communicate UART, but the status of COSMOS (target name is PNUSAT-1) is 'attempting'.

Can I know what problem I have? and please leave any messages who know about this problem and have experience.

Thanks for looking at my question.