
MULTIPOINT CIRCULAR-CHART RECORDER INSTALLATION AND OPERATION MANUAL
Section 4
Page 4 - 5
HA250385
Issue 2 Mar 98
4.1.3 Options
In order to simplify this manual, option descriptions for relays, analog retransmission, derived variables (math),
memory card and serial communications are included in the Options Manual supplied, if appropriate, with your
recorder.
4.1.4 Logs 1 and 2
Logs are alphanumeric reports showing the current values of a number of process variables. Logs can either be
printed on the chart, or if the appropriate (archiving) memory card option is fitted, they can be sent to memory card–.
As despatched from the factory, the two log groups contain input channels 1 to 6. To include option PVs such as to-
talisers, derived channels etc, the user can edit the log groups as described in Group configuration (section 4.6.1).
Group configuration also allows the group format to be defined, i.e. whether Process variable (PV) tags and instru-
ment tag are to be included.
Logs can be initiated in the following ways:
a. Automatically at fixed time periods (section 3.3.3)
b. From the Operator menu (section 3.3.3)
c. By job action - (section 4.1.5)
Note: When logging automatically:
Log 1 prints contents on the chart at one of two logging intervals (A or B) set up in Chart configura-
tion (section 4.4.3). Normally, interval A is used; interval B is selected by job action (section 4.1.5).
If a memory card archive option is fitted, Log 2 saves its group contents to the memory card at one of
two archive intervals (A or B) set up in tthe Memory Card configuration (described in the options
manual). Normally, archive interval A is used; interval B is selected by job action (section 4.1.5).
4.1.5 Jobs
Jobs cause the operation of the recorder to change as the result of an initiating trigger which can be an alarm going
active, an event input, a totaliser reaching a previously specified value and so on. A list of job actions and 'modifiers'
is given in figure 4.1.5 following.
A modifier defines when the relevant action is to occur (e.g. While active, While inactive).