====== Moxa NPort 5250A ======

Two port RS-232/422/485 serial device servers

===== Instructions for Version 1.18.57 Build 16081213 =====

Received this version via email from [[support.us@moxa.com]] Joe delaCruz 2016.10.24 8:53PM

Latest version is in the repository now original under **tars** and the uncompressed version under **src/moxa**

  - cd to location <code>
cd /opt/lvisf/src/moxa/kernel2.x
</code>
  - modify the code so that it compiles properly on SL (Scientific Linux), compiles fine on CentOS 6.5
    - Uncomment line 742 of **npreal2.c**
      - Change this <code>
#if (LINUX_VERSION_CODE >= VERSION_CODE(2,4,0))
                //init_MUTEX(&tty_node->tx_lock);
#if (LINUX_VERSION_CODE < VERSION_CODE(2,6,39))
</code>
      - To this <code>
#if (LINUX_VERSION_CODE >= VERSION_CODE(2,4,0))
                init_MUTEX(&tty_node->tx_lock);
#if (LINUX_VERSION_CODE < VERSION_CODE(2,6,39))
</code>
    - Comment out line 744 of **npreal2.c**
      - Change this <code>
#if (LINUX_VERSION_CODE < VERSION_CODE(2,6,39))
                tty_node->tx_lock = SPIN_LOCK_UNLOCKED;
#else
</code>
      - To this <code>
#if (LINUX_VERSION_CODE < VERSION_CODE(2,6,39))
                // tty_node->tx_lock = SPIN_LOCK_UNLOCKED;
#else
</code>
    - Edit line 109 of **npreal2.c** to lower the version number
      - Change this <code>
#if (LINUX_VERSION_CODE > VERSION_CODE(2,6,36))
</code>
      - To this <code>
#if (LINUX_VERSION_CODE > VERSION_CODE(2,4,0))
</code>
  - if the driver has been previously installed, run the unintaller first <code>
sudo ./mxuninst
</code>
  - run the install script with 64 bit environment variable set  <code>
sudo ./mxinst m64
</code>
  - answer this NO to this question **Do you want to enable secure function? [y/N]**  N
  - ./mxinst fails <code>
The device driver does not build correctly on our SL system, need to modify npreal2.c
Uncomment line 742
Comment line 744
Line 109 - change (2,6,36) to (2,4,0)
Then:
sudo ./mxinst
</code>
  - From a Windows machine, run the Nport search program and assign IP address <code>
DMYancich - assigned - 10.4.1.168 (From DHCP, then made static)
</code>
  - ./mxinst will install config program in **/usr/lib/npreal2**, cd to **/usr/lib/npreal2**<code>
sudo ./mxaddsvr 10.4.1.198 2 # (ip from below, and 2 serial ports)
</code>

Found these two devices when testing out the CentOS build

{{facility:subsystem:datasystem:dev:hardware:moxa:nport5250a:20180420_lvisf_moxa_configuration.png?400|}}