Eurotherm 6100, User Manual

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100/180MM DISTRIBUTED GRAPHIC RECORDER: USER GUIDE
Page 84 HA029324
Issue 11 Oct 14
4.3.6 EVENT CONFIGURATION (Cont.)
OPERATOR
This allows a logical combination of input sources to be used to trigger an event. The selections and their
defi nitions are shown in table 4.3.6, below.
Operator Event active when: Event not active when:
Only S1 Active S1 not active
AND S1 and S2 both active S1 and/or S2 not active
OR S1 and/or S2 active S1 and S2 both not active
NAND S1 and/or S2 not active S1 and S2 both active
NOR S1 and S2 both not active S1 and/or S2 both active
XOR S1 or S2 active
S1 and S2 both active or both not
active
S1 = Source 1; S2 = Source 2
Table 4.3.6 Logical operators for event sources
SOURCE 2 SENSE
Allows source 2 to be used in its normal sense (Select ‘Source 2’) or inverted (Select ‘Not Source 2’).
Example: Source 2 is Group 1 Batch Running
With Source 2 Sense = Source 2, the event is active whilst the batch is running.
With Source 2 Sense = Not Source 2, the event is active whilst the batch is not running.
DESCRIPTOR
Allows a text string to be entered as the event title. See section 3.3.1 for text entry techniques.
JOB NUMBER
Select the required job number for this event.
CATEGORY
Select the required job to be carried out when the channel is in alarm (e.g. Enable recording) See section
4.7 for a description of job categories.
WHILE/ON
Allows the action of the alarm job to be chosen as
a. while active, while inactive or while unacknowledged for continuous jobs (e.g. Speed/interval B), or,
b. on going active, on going inactive or on acknowledgement for ‘one-shot’ jobs (e.g. increment counter).
See also
fi gure 4.3.3g and associated text.
EVENT EXAMPLE
An event is to be active whenever Channel 1 Alarm 1 is active whilst Channel 3 alarm 2 is not active.
Source 1 = Point alarm (On = Channel 1; Alarm = 1)
Source 2 = Point alarm (On = Channel 3; Alarm = 2)
Source 1 Sense = Source 1
Operator = And
Source 2 Sense = Not Source 2
It is possible to achieve the same result by inverting both Source senses and using the Nor operator.