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DA-681A Series Linux Introduction
1-2
Overview
The Moxa DA-681A Series x86-based rack-mount embedded computers are designed for control, monitoring,
data acquisition, and protocol conversion applications. With its robust design, the DA-681A is suitable for
industrial automation applications, such as power automation, transportation, and oil and gas.
The DA-681A’s main operating system is based on the 3rd Gen Intel® Core™ Celeron 1047UE 1.4 GHz CPU and
HM65 chipset, which supports standard x86, 1 x VGA, 4 x USB, 6 Gigabit LAN ports, 2 RS/232/422/485 3-in-1
serial ports, and 10 RS-485 (RS-422 by CV) ports. The DA-681A has a mini PCIe socket for mSATA and comes
with Linux pre-installed; Windows 7 Embedded is also supported by the CTOS (Configuration to Order Service)
process.
Another plus is that the serial ports come with 2 kV digital galvanic isolation protection to guarantee
communication reliability in harsh industrial environments. In addition, the state-of-art IEC 61850-3, IEEE
1613, and IEC 60255 compliance all-in-one design provides rich interfaces especially well suited for of power
substation automation applications.
Product Features
The DA-681A Series Basic System has the following features:
• IEC 61850-3, IEEE 1613, and IEC 60255 compliant for power substation automation systems (DPP and
DPP-T models only)
• 3rd Gen Intel® Core™ Celeron 1047UE 1.4 GHz CPU
• 1 built-in DDR3 memory socket
• 1 mSATA for OS and 1 SATA III for storage expansion
• 6 Gigabit Ethernet ports for network redundancy
• 4 USB 2.0 ports for high speed peripherals
• 2 isolated RS-232/422/485 and 10 isolated RS-485 ports
• Embedded Debian 8 Linux (W7E by CTOS)
• Supports both 100 to 240 VAC and VDC power inputs (single power and dual power models available)
• Optional IRIG-B expansion module available on DPP and DPP-T models
ATTENTION
Refer to section “Baud Rate Speed” for calculation of baud rate speed supported.
Содержание
- Da 681a series linux user s manual 1
- Edition 1 november 2015 1
- Www moxa com product 1
- Copyright notice 2
- Da 681a series linux user s manual 2
- Disclaimer 2
- Technical support contact information 2
- Trademarks 2
- Www moxa com support 2
- Table of contents 3
- Introduction 5
- Attention 6
- Da 681a series linux introduction 6
- Overview 6
- Product features 6
- Attention 7
- Da 681a series linux introduction 7
- Software specifications 7
- Software configuration 8
- Connecting from an ssh console 9
- Starting from a vga console 9
- Windows users 9
- Adjusting the system time 10
- Da 681a series linux software configuration 10
- Linux users 10
- Root bee_notebook root ssh 192 68 27 the authenticity of host 192 68 27 192 68 27 can t be established rsa key fingerprint is 8b ee ff 84 41 25 fc cd 2a f2 92 8f cb 1f 6b 2f are you sure you want to continue connection yes no yes_ 10
- Setting the time manually 10
- Attention 11
- Ntp client 11
- Bin sh ntpdate time stdtime gov tw you can use the time server s ip address or domain name directly if you use domain name you must enable the domain client on the system by updating etc resolv conf file hwclock w sleep 100 updates every 100 seconds the min time is 100 seconds change 100 to a larger number to update rtc less often 12
- Da 681a series linux software configuration 12
- Enabling and disabling daemons 12
- Example shell script for updating the system time periodically 12
- How to run the shell script automatically when the kernel boots up 12
- Moxa moxa chmod 755 fixtime 12
- Moxa moxa init q 12
- Moxa moxa sudo insserv d apache2 12
- Moxa moxa sudo insserv r apache2 12
- Moxa moxa vi etc inittab 12
- Ntp 2345 respawn etc init d fixtime 12
- Updating the time automatically 12
- Cron daemon for executing scheduled commands 13
- Da 681a series linux software configuration 13
- Inserting a usb storage device into the computer 13
- Minute hour date month week user command 0 8 root path to your program 13
- Moxa moxa sudo etc init d apache2 start 13
- Moxa moxa sudo etc init d apache2 stop 13
- Root moxa mount sysfs on sys type sysfs rw nosuid nodev noexec relatime 13
- Attention 14
- Apt installing and removing packages 15
- Attention 15
- Checking the linux version 15
- Da 681a series linux software configuration 15
- Root moxa apt get install vim root moxa 15
- Root moxa apt get remove vim purge root moxa 15
- Root moxa apt get remove vim root moxa 15
- Root moxa apt get update root moxa 15
- Root moxa uname a linux moxa 3 6 4 amd64 1 smp debian 3 6 ckt9 2 2015 04 13 x86_64 gnu linux root moxa 15
- Root moxa vi etc apt sources list deb http ftp us debian org debian jessie main contrib non free deb src http ftp us debian org debian jessie main contrib non free deb http ftp us debian org debian jessie updates main contrib non free deb src http ftp us debian org debian jessie updates main contrib non free deb http security debian org jessie updates main contrib non free deb src http security debian org jessie updates main contrib non free deb http ftp debian org debian jessie backports main contrib non free deb src http ftp debian org debian jessie backports main contrib non free 15
- Attention 16
- Managing communications 17
- Changing the interfaces configuration file 18
- Changing the network settings 18
- Da 681a series linux managing communications 18
- Moxa cd etc network 18
- Moxa etc network vi interfaces 18
- Static ip address 18
- The loopback network interface auto lo eth0 eth1 eth2 eth3 eth4 eth5 iface lo inet loopback the primary network interface allow hotplug eth0 iface eth0 inet static address 192 68 27 netmask 255 55 55 broadcast 192 68 55 allow hotplug eth1 iface eth1 inet static address 192 68 27 netmask 255 55 55 broadcast 192 68 55 allow hotplug eth2 iface eth2 inet static address 192 68 27 netmask 255 55 55 broadcast 192 68 55 18
- Adjusting ip addresses with ifconfig 19
- Dns client 19
- Dynamic ip address using dhcp 19
- Etc hostname 19
- Etc resolv conf 19
- Apache web server 20
- Default homepage 20
- Etc nsswitch conf 20
- Attention 21
- Da 681a series linux managing communications 21
- Filter table includes three chains 21
- Iptables 21
- Mangle table includes two chains 21
- Nat table includes three chains 21
- Sub tables 21
- Da 681a series linux managing communications 22
- Iptables hierarchy 22
- Iptables modules 22
- Attention 23
- Da 681a series linux managing communications 23
- Examples 23
- Observe and erase chain rules 23
- To maintain the database 23
- Append or delete rules 24
- Da 681a series linux managing communications 24
- Define policy for chain rules 24
- Examples 24
- Attention 25
- Da 681a series linux managing communications 25
- Nat example 25
- Nat network address translation 25
- Da 681a series linux managing communications 26
- Enabling nat at bootup 26
- Ppp point to point protocol 26
- Attention 27
- Connecting to a ppp server over a simple dial up connection 27
- Da 681a series linux managing communications 27
- Checking the connection 28
- Connecting to a ppp server over a hard wired link 28
- Setting up a machine for incoming ppp connections 29
- Attention 30
- Attention the definitions here can allow users to login without a password if you don t use the login option of pppd the mgetty debian package already provides this option make sure you don t change that inbound connections every regular user can use ppp and has to use passwords from etc passwd hostname username hinet net password userids that cannot use ppp at all check your etc passwd and add any 30
- Da 681a series linux managing communications 30
- Etc inittab 30
- Keep modem up even if connection fails persist crtscts modem 192 68 6 192 68 6 debug detach 30
- Pppd call dialin 30
- Say auto answer on n ats0 1 30
- Secrets for authentication using chap client server secret ip addresses pppoe example if you want to use it you need to unmark it and modify it username hinet net password 30
- Attention 32
- Da 681a series linux managing communications 32
- Inet addr 192 6 2 p t p 129 7 65 mask 255 55 55 inet addr 192 6 2 p t p 129 7 65 mask 255 55 55 32
- Moxa etc cat resolv conf resolv conf this file is the resolver configuration file see resolver 5 nameserver 192 68 6 nameserver 168 5 nameserver 139 75 0 0 nameserver 140 15 1 nameserver 140 15 36 0 moxa etc 32
- Nfs network file system client 32
- Ppp0 link encap point to point protocol 32
- Rx packets 33 errors 0 dropped 0 overrun 0 rx packets 33 errors 0 dropped 0 overrun 0 32
- Tx packets 42 errors 0 dropped 0 overrun 0 tx packets 42 errors 0 dropped 0 overrun 0 32
- Up pointopoint running mtu 1500 metric 1 up pointopoint running mtu 1500 metric 1 32
- Snmp simple network management protocol 33
- Attention 34
- Da 681a series linux managing communications 34
- Ethernet bridging for private networks on different subnets 34
- Iso 5 timeticks 55561825 6 days 10 20 18 5 iso 5 hex string 07 df 09 03 0a 2c 05 00 2b 08 00 iso 5 integer 393216 iso 5 string boot_image boot vmlinuz 3 6 4 amd64 root label da681a_moxa ro initrd install initrd gz quiet iso 5 gauge32 3 iso 5 gauge32 42 iso 5 integer 0 iso 5 no more variables left in this mib view it is past the end of the mib tree 34
- Openvpn 34
- Attention 35
- Attention 36
- 68 0 0 255 55 55 u 0 0 0 eth3 37
- 68 0 255 55 55 u 0 0 0 br0 37
- 68 0 255 55 55 u 0 0 0 eth0 37
- 68 0 255 55 55 u 0 0 0 eth2 37
- Attention 37
- Da 681a series linux managing communications 37
- Destination gateway genmsk flags metric ref use iface 37
- Ethernet bridging for private networks on the same subnet 37
- Da 681a series linux managing communications 38
- Point to the peer remote 192 68 74 dev tap0 secret etc openvpn secrouter key cipher des ede3 cbc auth md5 tun mtu 1500 tun mtu extra 64 ping 40 up etc openvpn tap0 br sh comp lzo 38
- Point to the peer remote 192 68 74 dev tun secret etc openvpn secrouter key cipher des ede3 cbc auth md5 tun mtu 1500 tun mtu extra 64 ping 40 ifconfig 192 68 73 192 68 74 up etc openvpn tun sh end 38
- Routed ip 38
- Programmer s guide 40
- Device api 41
- Getting the product serial number 41
- Da 681a series linux programmer s guide 42
- Example of setting the default timer 42
- Int ioctl fd rtc_rd_time struct rtc_time time description read time information from the rtc it will return the value on argument 3 42
- Int ioctl fd rtc_set_time struct rtc_time time description set rtc time argument 3 will be passed to rtc 42
- Introduction 42
- Moxa moxa vi etc modprobe d watchdog conf options moxa_v2100_wdt timer_margin 60 moxa moxa 42
- Rtc real time clock 42
- Setinterface dev ttym0 2 42
- Watchdog usage 42
- Wdt watch dog timer 42
- Disable no way out 43
- Enable no way out 43
- Enable or disable no way out 43
- How the wdt works 43
- Magic close 43
- Da 681a series linux programmer s guide 44
- Defaults compiled into the binary admin root interval 1 logtick 1 log dir var log watchdog 44
- Moxa moxa ls l etc rc d watchdog ls cannot access etc rc d watchdog no such file or directory moxa moxa 44
- Moxa moxa sudo insserv r watchdog 44
- Watchdog device ioctl commands 44
- Examples 45
- System recovery 48
- Da 681a lx 49
- Da 681a series linux system recovery 49
- Hardware 49
- Recovery environment 49
- Recovery procedure 49
- Step 1 prepare your usb drive 49
- Usb port 49
- Da 681a series linux system recovery 50
- Da 681a series linux system recovery 51
- Da 681a series linux system recovery 52
- Step 2 change the bios settings 52
- Da 681a series linux system recovery 53
- Da 681a series linux system recovery 54
- Step 3 restore the system from the usb drive 54
- Da 681a series linux system recovery 55
- Da 681a series linux system recovery 56
- Da 681a series linux system recovery 57
- Step 4 change the bios settings to boot from the original disk 57
- Da 681a series linux system recovery 58
- Saving the system to the usb drive 58
- Da 681a series linux system recovery 59
- Da 681a series linux system recovery 60
- A software components 61
- Software components 61
- Da 681a series linux software components 62
- Da 681a series linux software components 63
- Da 681a series linux software components 64
- Da 681a series linux software components 65
- Da 681a series linux software components 66
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- Da 681a series linux software components 69
- Da 681a series linux software components 70
- Da 681a series linux software components 71
- Da 681a series linux software components 72
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- Da 681a series linux software components 79
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