Emerson FM-3 Anleitung zur Fehlerbehebung PDF herunterladen (Seite 51)

Initial Tests

If you are having communications problems and you are sure that the serial cable you are using is correctly

configured per the serial cable wiring diagram (see Appendix A), verify that none of the following are true

before proceeding:

1. There are no other programs consuming the serial port’s resources.

Typical examples of programs that can cause problems would be any Fax software or Palm Pilot

software that may not be active and open, but yet are “poised and ready” in the Windows system

tray (See Figure 2). These programs “watch” the serial port for any activity and when they detect a

connection attempt will block access to the port. If you have any programs of this nature

(including Allen Bradley’s “RSLinx” software) close them at once by right clicking on their icons

in the system tray and then closing the programs.

Figure 2

2. You have the serial cable plugged into the wrong port.

Ensure that the serial communications cable is plugged into the serial port on the En/Eb/Ei drive.

Refer to Appendix E for the location of the serial port on the drive.

3. The power is turned off.

In order to communicate with any En/Eb/Ei drive, the main AC power must be present.

4. The drive you are trying to communicate with is faulted.

There are certain faults that can cause communication failures. If you cannot reset the drive, it may

be that you will not be able to communicate with it either.

Serial Loopback Test

Step 1: Re-start your PC

For best results, shut down and restart your PC. If you have just turned on the PC, ignore this step. Please

refer to step 1 above if you see any Fax or Palm icons in the system tray after you restart your computer.

Step 2: Create a new HyperTerminal Connection

Open the HyperTerminal folder from the Windows start menu by clicking on it (See Figure 1). Once the

folder is open, double click on the “Hypertrm.exe” shortcut (See Figure 3) to begin a new connection.

Palm Software icon

Fax software icon

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Emerson FM-3 Anleitung zur Fehlerbehebung Seite 51