Technical Support Notes
| Article ID: | T57 |
| Date: | 12/07/00 |
| Product: | SPEL for Windows 2.0 (all versions) |
| Problem: | Error 94 when Wait Dsw is executed in Trap Emergency handler |
Symptoms
If Wait Dsw is used in a Trap Emergency handler,
error 94, "Overtime error of Wait Sw command", occurs. The following
example will give error 94 after emergency stop is pressed during
execution.
Function
main
Trap Emergency Call eTrap
While True
Print "Test"
Wait 1
Wend
Fend
Function eTrap
Wait Dsw(3) = 4
Restart
Fend
Causes
This is a
bug in the SRC-3xx controller firmware.
Remedies
Avoid using Wait Dsw in the trap emergency
handler. Instead, set a flag so that after restart, the main function can
recover from the estop and execute the Wait statement.
Status
This problem will be fixed in a future
version.
