5 |
Using the Monitor Commands to Troubleshoot the Network
There are three Monitor commands that are especially useful to troubleshoot the net- work:
HThe NODE command
HThe EXS command
HThe LOG command
HThe TALLY command
NODE Command: The NODE command displays the TCP/IP Ethernet
EXS Command: The EXS command displays the Extended Status Buffer. This buffer maintains information about COMMREQs issued to this Ethernet Interface from the PLC ladder program of the local station.
LOG Command: The LOG command displays a log of exception conditions occurring at the local station. The events are counted, time stamped, and differentiated by an error code.
TALLY Command: The TALLY command displays counts of transactions of the specific tasks.
Using the Modify Commands
To use any of the Modify commands you must obtain the modify º=º prompt using the LOGIN command. To do this you must know the current password. The default pass- word is ªsystemº (lower case characters).
To log in, type from the ª>º prompt:
LOGIN <RET>
The password prompt will then be displayed.
Password:
Type in the current password and press Enter. If the entered password matches the current password for the station, the modify ª= º prompt is displayed. The password is case sensitive.
One may execute all Monitor and Modify commands from the Modify ª=º prompt. If no commands are executed within 10 minutes, the Modify login will
Note
The security feature is intended to prevent inadvertent misuse of the Modify commands. It is not a foolproof mechanism to prevent unauthorized changes. For the greatest protection, restrict the number of people who know the password, restrict access to the Station Manager terminal, and always log off when you leave the Station Manager.
Chapter 5 The Station Manager |