In-process operation, 1 mode transition, 2 generation of alarms – Yokogawa EJA115 User Manual
Page 32: 1 indication of alarms, In-process operation -1, Mode transition -1, Generation of alarms -1, Indication of alarms -1
IM 01C22T03-00E
7-1
7. IN-PROCESS OPERATION
7.
IN-PROCESS OPERATION
This chapter describes the in-process operation of the
EJA
7.1 Mode Transition
When each block mode is changed to Out of Service
(O/S), the block pauses and a block alarm is issued.
When the AI block mode is changed to MAN, the AI
block suspends updating of output values. In this case
alone, it is possible to write a value and status to the
OUT parameter of the block for output.
7.2 Generation of Alarms
7.2.1 Indication of Alarms
When the self-diagnostics function detects a fault in the
EJA, diagnostic information and an error indication are
displayed by using parameter Diagnosis and Diagnosis
Extension in the physical block. If an LCD indicator is
installed, the error number is displayed as AL.XX. If
two or more alarms are issued, the error numbers are
displayed in a repeating sequence.
F0701.EPS
Figure 7.1 Error Indication