YME Engineering Course

J. SEQUENCE CONTROL FUNCTION
types of condition signal outputs are available: a “latched” type and a
“non-latched” type. The syntax form for status manipulation is shown
below.
%ANnnnn.PV.H or %ANnnnn.PV.L
%ANnnnn: Element number
H: Occurrence/recovery of a latched annunciator message (*1)
L: Occurrence/recovery of a non-latched annunciator message
*1: Latched type output is only supported by sequence table block.
In the case of latched annunciator messages, recovery can be made by N-
status manipulation of the sequence table. The following syntax form is for
the recovery of an annunciator message output.
%ANnnnn.PV.H -----N
J.4.5 OPERATOR GUIDE MESSAGE (%OG)
Operator guide messages are used to prompt the operator’s acknowledgment for
certain operation during certain progress of the process.
♦ The Occurrence of Operator Guide Messages
Operator guide messages are triggered by the sequence control of the
control station. When the Operation and Monitoring Functions detect an
operator guide message, a character string that corresponds to the
message number is displayed in the Operator Guide window, then the
operator guide message is saved to the historical message log file. The
occurrence of operator guide messages is shown as below:
YME Training Center J-22
CS3KR3-ENG 1 ST Edition Jan 2002