User Manual

Appendix A
Publication 1771-6.5.88 – July 1997
Singletransfer for Reporting
Ejector Status
Status information is now returned by single transfer. This improves
the PLC processor’s ability to detect ejector status because single
transfer enables quicker detection and reporting of ejector operation.
The following table lists the status bits now available for single-
transfer programming. Address these bits as follows:
• rack group address (Ixx:...) corresponding to module’s I/O slot
• the module defaults to 1/2-slot (double-density) addressing
Bit Description
B08 Initial advance stroke completed
SET during ejector profile execution when module monitors completion of the initial advance stroke.
RESET when the module receives any execution command
except DYC02–B10 through DYC02–B13.
B09 Ejector is retracting or ready to retract
Set during ejector profile execution when module monitors completion of any advance stroke.
RESET during ejector profile execution when the module monitors completion of any retract stroke.
B10 Dwell timer timing
SET and RESET as specified by bit SYS03–B10.
B11 Final advance stroke completed
SET during ejector profile execution when module monitors completion of the final advance stroke.
RESET when the module receives any execution command
except DYC02–B10 through DYC02–B13.
B12 End-of-dwell ejector profile continuation pending
SET during ejector profile execution when ejector forward dwell timer is timing and the module is
prepared to continue the ejector profile when dwell time expires.
RESET at all other times.
B13 Reserved
B14 Ejectors running
SET during ejector profile execution when SYS03–B08 and SYS03–B10 are both RESET.
RESET during ejector profile execution when either SYS03–B08 or SYS03–B10 are SET.
B15 Ejector profile complete
SET and RESET as specified by bit SYS02–B14 except that it is not RESET by DYC03–B10
How the Enhancement
Effects System Operation