Dell EGW-3200, Руководство пользователя

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EMP2-X4S2 card with isolated RS-422/485 uFM
expansion module
About this task
Map the pins according to the following table.
Table 16. RS-422/485 pin assignment
RS-422 full duplex Pin RS-485 half duplex
- 1 -
TX+ 2 D+
RX+ 3 -
- 4 -
GND 5 GND
- 6 -
RX– 7 -
TX– 8 D–
- 9 -
Steps
1. Download the latest driver (EMP2-X4S2_Linux_driver_<DATE>.zip) from the Dell Technologies Support Site . Unzip the file
and copy the driver package on your platform with the Ubuntu environment.
2. Use the following cd commands in the driver directory.
$ sudo apt install make gcc
$ sudo make clean
$ sudo make
$ openssl req -new -x509 -newkey rsa:2048 -nodes -days 36500 -outform DER -keyout
"MOK.priv" -out "MOK.der" -subj "/CN=$(hostname) module signing key/"
$ kmodsign sha512 MOK.priv MOK.der xr17v35x.ko
$ sudo make install
$ sudo vim /etc/modules-load.d/modules.conf
3. Add xr17v35x into the file to make Ubuntu auto load this driver during boot up.
$ sudo vim /etc/modules-load.d/modules.conf
4. Add blacklist 8250_exar into the file to make the standard serial port driver not conflict with xr17v35x.
$ sudo vim /etc/modprobe.d/blacklist.conf
NOTE: This step is to roll back the modifications of modules.conf/blacklist.conf by the EMP2-X2S1 driver if you
previously used the EMP2-X2S1 card.
$ sudo mokutil --import MOK.der
Enter your password twice.
$ sudo reboot
While the BIOS loads GRUB, the device displays a blue screen for MokManager . On this screen, perform the following
steps:
a. Select
Enroll MOK .
Setting Up the Ubuntu Operating System 87