ABB COM600 series, User Manual

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When the measurement queue is full, an older update is always skipped when a new
update is pushed the queue.
The updates are skipped according to the following logic:
• If an item has two or more updates, the oldest update is skipped
•
If no item has two or more updates, the oldest update in the queue is skipped.
For measurements, older updates for an item are also skipped when the queue reaches
a configurable percent of the maximum capacity (but only if there is an item with multiple
outstanding updates to send).
Queue priorities
If a high priority queue contains an update, it is always sent first. After that, the interrog-
ated queue is checked. If none of these queues has updates, the state indications and
measurements are checked in round-robin fashion.
Queue capacities
The capacity (maximum size) of each queue is independently configured. If one queue
fills up, capacity from another, possibly non-full queue is not used.
Event Printer 3.13.
COM600 Event Printer enables printing of events as they arrive to COM600. The same
event information is presented on the COM600 HMI event list and printed on the event
printer. It is possible to customize the printout, for example, by selecting the printed
columns and their lengths. Alarming events can be marked with a configurable symbol.
For more information about the configuration of the Event Printer, see 6.4.4.3, Config-
uring COM600 event printer.
Currently supported printer models are Fujitsu and
. Any dot matrix printer should work, but their
compatibility with COM600 cannot be guaranteed. If local
special characters are needed, check that the printer character
set supports them.
Event Printer is connected to a serial communication port (RS-232) of COM600 with a
null-modem cable (to be purchased separately).
For diagnostic purposes, Event Printer generates the following non-printable supervision
events to the HMI event list.
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COM600 series, version 4.1
1MRS756125
User's Manual