User`s manual

12-18 Motion Mate™ DSM314 for Series 90™-30 PLCs User's Manual

–

January 2001 GFK-1742A

Watchdog Timeout Warning / Error

Local Logic programs are constrained to complete execution within 300 microseconds in the Logic

Engine. This is to allow sufficient processing time in the module for Path Generation and other

tasks. Refer to Appendix E for a detailed listing of the execution times for all valid Local Logic

operations. The user can compute the execution time required for a given program using the data

tables supplied in Appendix E. The Logic Engine reports a warning (Status Only) error code if the

execution time takes more than 275 microseconds but less than 300 microseconds. A Fast Stop

error is generated if the program execution time exceeds 300 microseconds. Refer to Table 12-10

for a list of the runtime warnings and error codes.

Note

Local Logic execution is halted if there are any Local Logic

Fast Stop

errors (see Table 12-10) and

all Digital Outputs, Control bits (Jog, Feedhold, Strobe Resets, Follower Enable) and CTL bits that

are under the control of Local Logic are disabled. Local Logic execution resumes from the start

when the user clears the error (via the error clear %Q bit).