Appendix B: Common Commands And Software Switches; Jc-Mer-Cxb Program (Router); Ethernet Communications Tests (Testnet); Determining The Mac Address (Getmac) - Contemporary Controls Metasys JC-MER-CXB User Manual

Appendix B: Common Commands and Software Switches

JC-MER-CXB Main Program (router)
The JC-MER-CXB is set up to automatically load and run all of the
TCP/IP and router software when the computer is booted. The unit's
software first loads some Metasys kernel software. The router
program, router, is then run.
If a terminal emulator is attached to COM2, a startup screen
displays when the JC-MER-CXB is booted. Once the router software
is running, an operator can type "Q" on the keyboard to terminate the
router program. To restart the router software, either type router at
the bash prompt or recycle power.

Ethernet Communications Tests (testnet)

The testnet program looks at the list of Metasys Ethernet devices
defined in the configuration screen and attempts to communicate
with each of them by issuing TCP/IP ping commands. The program
produces a summary of the communications with each Metasys
Ethernet device as shown below.
Figure 16 — Example of Testnet Results Screen
If a device is not responding to testnet, either the Ethernet or the device
has failed. Test the Ethernet link, then check connections to the device.
Finally, verify each item in the configuration screen.
Note:
A firewall can prevent an OWS from responding to the
ping command.
Determining the MAC Address of the JC-MER-CXB (getmac)
Sometimes your IT staff may need to know the MAC address of the
JC-MER-CXB. This is reported on screen by entering the command
getmac at the bash prompt.
TD060100-0MA
42