Owner's manual

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If the Host requests the limits for a specific variable which is eligible for limits monitoring but does not
have any limits defined, this variable will be reported as follows:
S2F48 * H <- E
<L
<L [2]
<U4 VID> * Variable ID
<L [4]
<A UNITS> * Units of Measure
<LIMITMIN> * Minimum Limit
<LIMITMAX> * Maximum Limit
<L> * No Limits Defined
>
>
...
> .
4.2.48 S5F1 - Alarm Report
S5F1 [W] * H<-E
<L [3]
<B [1] ALCD> * ALCD - Alarm On/Off and Severity
<U4 ALID> * ALID - Alarm ID
<A [40] ALTX> * ALTX - Alarm Text
> .
This message is the “normal
” message that the Equipment uses to report alarms. In order for this message
to be used, the equipment constant “ConfigAlarms” must be set to “0”.
If the equipment constant “ConfigAlarms” is set to “0”, the Equipment sends S5F1 instead of the normal
S5F73 Alarm Notification Send. The Equipment reports that an alarm condition has changed.
ALID identifies the Alarm.
The high-order bit of ALCD will be “1” if this alarm is currently On (Unsafe), or “0” if it is currently Off
(Safe). The low-order seven bits of ALCD contain the severity code for this alarm.
ALTX contains up to 40 bytes of Alarm Text. Refer to Appendix C for a table of possible alarms.
Equipment constant “WBitS5” controls whether the Equipment sends S5F1 with W-Bit “1” (Reply
Expected) or “0” (No Reply Expected).
4-36 Equipment-to-Host Messages