Rockwell Automation GMLC Reference Manual - Manual (Page 433)

Publication GMLC-5.2 - November 1999
396 DH-485 Blocks
If other tasks are executing (multitasking), the task that contains this
block pauses while the other tasks continue to execute. In this way, a Wait
for DH-485 selection in one task does not halt execution of any other
tasks or hang the task dispatcher.
Reset DH-485 Fault
Use the Reset DH-485 block to clear any and all DH-485 faults.
The Reset DH-485 Fault block resides on the DH-485 Toolbar. It requires
no parameters and has no dialog box. This block requires no parameters
and it always has a check mark by the upper left corner of the block to
indicate that it is complete.
If you select DH-485 Link in the General page of the Configure Control
Options dialog box, you can use the Reset DH-485 Fault block to directly
clear any and all DH-485 faults. Use this block to reset DH-485
communications only after you have determined and fixed the cause of
the fault or failure.
This block sets the DH485_general_fault variable to zero.