2.4.8 Troubleshoot DHCP connectivity issues
Use the following tips to troubleshoot server connectivity issues:
Procedure
1. Ensure that the gas chromatograph (GC) is up and running.
2. Check that the SW1 switch is in the On position.
3. Check the following connections:
a) If you are using a Ethernet straight-through cable, ensure that the personal
computer (PC) has an Ethernet network interface card with auto-MDIX.
b) If your Ethernet network interface card does not support auto-MDIX, ensure
that you are using an Ethernet crossover patch cable.
c) Check to see if the GC's central processing unit (CPU) board link lights are on.
see Figure 2-8. The three Ethernet1 light-emitting diodes (LEDs) are located
on the front bottom edge of the card. If link lights are off, then check your
connections. (see Figure 2-8).
Figure 2-8: CPU Board Link Lights
4. Do the following to ensure that your network adapter is enabled:
a) Go to Start → Control Panel → Network Connections....
b) Check the status of the Local Area Connection icon. If the status appears as
Disabled, right-click the icon and select Enable from the context menu.
5. Do the following to try to repair the network connection:
a) Go to Start → Control Panel → Network Connections....
b) Right-click the Local Area Connection icon and select Repair from the
context menu.
2.4.9
Connect directly to a personal computer (PC) using the
gas chromatograph's (GC's) serial port
The GC’s serial port at J23 on the backplane allows a PC with the same type of port to
connect directly to the GC. This is a useful feature for a GC that is located in an area
without Internet access; all that is needed is a PC running Microsoft Windows
®
, a notebook
computer, and a straight-through serial cable.
To set up the PC for the direct connection, do the following:
Procedure
1. Install the communications cable between two computers:
a) Navigate to Start → Control Panel and select the Phones and Modem
Options icon.
The Phones and Modem Options dialog window displays.
Installation and start-up Quick Start Guide
July 2020 00825-0100-3770
30 Emerson.com/Rosemount
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