DA-720

Datasheet

DA-720 Series Website
moxa-da-720-series-datasheet-v1.1.pdf

Expansion Modules

• See DE-PRP-HSR-EF page
• See DE-SP08-I-TB page

Peripherals on board

Prerequisite for on board peripherals on DA-720 host

• Build moxa-misc-driver on DA-720 host

UART

• UART interface list

UART index	Device node
P1 Series	/dev/ttyS0
P2 Series	/dev/ttyS0

• Control UART interface mode

# get mode from P1 Series
setinterface /dev/ttyS0

# set mode for P1 Series as RS232
setinterface /dev/ttyS0 0 
# set mode for P1 Series as RS485-2WIRES
setinterface /dev/ttyS0 1
# set mode for P1 Series as RS422
setinterface /dev/ttyS0 2 

Relay

• UART interface list

Relay index	sysfs node
Relay Port	/sys/class/gpio/relay1/value

• Control Relay NC/NO mode

Default mode is NO (Normal Open)

Example:

# set mode for relay port as NO (Normal Open)
echo 0 > /sys/class/gpio/relay1/value

# set mode for relay port as NC (Normal Close)
echo 1 > /sys/class/gpio/relay1/value

Programmable LED

• Programmable LED interface list

PLED index	sysfs node
PLED 1	/sys/class/gpio/pled1/value
PLED 2	/sys/class/gpio/pled1/value
PLED 3	/sys/class/gpio/pled1/value
PLED 4	/sys/class/gpio/pled1/value

• Control PLED status

Default PLED mode is lights off (low)

Example:

# lights on PLED1
echo 1 > /sys/class/gpio/pled1/value

# lights off PLED1
echo 0 > /sys/class/gpio/pled1/value

Power input monitor

• Power input monitor list

Power input index	sysfs node
Power input 1	/sys/class/gpio/pwrin1/value
Power input 2	/sys/class/gpio/pwrin2/value

• Get Power input monitor status

Value: 0 = Power disconnected, 1 = Power connected

Example:

# get power input 1 status
cat /sys/class/gpio/pwrin1/value

# get power input 2 status
cat /sys/class/gpio/pwrin2/value

Watchdog

• Force using Super IO watchdog instead of ACPI Hardware Watchdog (WDAT)

  1. Edit /lib/modprobe.d/wdat_wdt_blacklist.conf

     blacklist wdat_wdt
  2. Build moxa-it87-wdt-drivers (5.2/master) on host.
  3. Edit /lib/modprobe.d/watchdog.conf

     # timeout:Watchdog timeout in seconds, default=60 (int)
     # nowayout:Watchdog cannot be stopped once started, default=0 (bool)
     options it87_wdt nowayout=1 timeout=60

• Watchdog daemon package (Debian/Ubuntu)

  1. Install package

     sudo apt-get update
     sudo apt-get install watchdog
  2. Config file /etc/default/watchdog

     # Start watchdog at boot time? 0 or 1
     run_watchdog=1
     # Start wd_keepalive after stopping watchdog? 0 or 1
     run_wd_keepalive=0
     # Load module before starting watchdog
     watchdog_module="it87_wdt"
     # Specify additional watchdog options here (see manpage).
  3. To uncomment this to use the watchdog device driver access "file", /etc/watchdog.conf

     watchdog-device                = /dev/watchdog

LAN interface

On Debian 11/Ubuntu 20.04:

LAN index	Renamed NIC	Driver	PTP Support
LAN1	enp3s0	igb	V
LAN2	enp4s0	igb	V
LAN3	enp5s0	igb	V
LAN4	enp6s0	igb	V
LAN5	enp7s0	igb	V
LAN6	enp8s0	igb	V
LAN7	enp9s0	r8169	X
LAN8	enp10s0	r8169	X
LAN9	enp11s0	r8169	X
LAN10	enp12s0	r8169	X
LAN11	enp13s0	r8169	X
LAN12	enp14s0	r8169	X
LAN13	enp15s0	r8169	X
LAN14	enp16s0	r8169	X

Troubleshooting

1. failed to load firmware

[    7.529638] i915 0000:00:02.0: firmware: failed to load i915/skl_dmc_ver1_27.bin (-2)
[    7.529644] firmware_class: See https://wiki.debian.org/Firmware for information about missing firmware
[    7.889522] r8169 0000:10:00.0: firmware: failed to load rtl_nic/rtl8168h-2.fw (-2)
[    7.889532] r8169 0000:10:00.0: Unable to load firmware rtl_nic/rtl8168h-2.fw (-2)

On Debian 11/Ubuntu 20.04:

# edit /etc/apt/source.list, and append 'non-free' to list,
# your source.list should look like this:
deb http://deb.debian.org/debian/ bullseye main non-free

# and run
sudo apt-get update
sudo apt-get install firmware-realtek firmware-misc-nonfree

Last updated on 2022-06-13 by Elvis Yao