Diagnostics and Troubleshooting – ASCII to PLC
Last message sent to PLC (bytes)
:
This buffer shows the last message that was successfully sent to the PLC.
Next message stored in ASCII queue (bytes)
:
This buffer shows the next ASCII message waiting to be sent. This ASCII message will only be
sent to the PLC if the Length field within the Tag or file is set to zero, indicating the last message
has been processed.
-When using String Data Type, the .LEN needs to be set to 0.
-When using INT Data Type, the 1st array index [0] needs to be set to 0.
-When using SINT Data Type, the 1st and 2nd array index [0] & [1] needs to be set to 0.
Current message being processed (bytes)
:
This buffer shows the real time data that the ASCII device is sending out to the 490NBX
gateway. All data in this buffer is pending due to one of the three end cases not being met.
Those end cases are Character Count, Timer, and Delimiters.
Send Test Message to PLC:
Use this field to send a test message to the PLC.
NOTE
: PLC and Port must be configured to use this feature.
Real Time Automation, Inc.
21
1-800-249-1612
