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SEMI E5-1104 © SEMI 1982, 2004 114 Stream,Function Name (Mnemonic) Direction S5,F1 Alarm Report Send (ARS) S,H<-E ,[reply] Description This message reports a chang e in or presen ce of an alarm condition. One message …

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SEMI E5-1104 © SEMI 1982, 2004 113
Stream,Function Name (Mnemonic) Direction
S4,F41 Handoff Halt Acknowledge (HHA) P<->S
Description
Sent to equipment’s transfer partner following completion of halt activities resulting from a previously received S4,F39.
Structure
L,2
1.<TRLINK>
2.<HOHALTACK>
Exception
None
S4,F42 Not Used
10.9 Stream 5 Exception Handling — This stream contains messages regarding binary and analog equipment
exceptions. Exceptions are classified into two categories: errors and alarms. Messages S5,F1 through S5,F8 of this
section provide basic alarm messages. The messages S5,F9 through S5,F18 provide extended capabilities for
Exception Handling. When using messages F1–F8, alarms may be divided into categories as follows:
1. personal safety — Condition may be dangerous to people.
2. equipment safety — Condition may harm equipment.
3. parameter control warning — Parameter variation outside of preset limits — may harm product.
4. parameter control error — Parameter variation outside of reasonable control limits — may indicate an
equipment malfunction.
5. irrecoverable error — Intervention required before normal use of equipment can resume.
6. equipment status warning — An unexpected condition has occurred, but operation can continue.
7. attention flags — A signal from a process program indicating that a particular step has been reached.
8. data integrity — A condition which may cause loss of data; usually related to Stream 6.
10.9.1 For messages F1 through F8, it will be the equipment’s responsibility to categorize the alarm. Some alarm
conditions may cause more than one type of alarm to be issued. For example, a parameter control error on over
temperature may also trip a protective device that makes the alarm irrecoverable without some intervention.
Stream,Function Name (Mnemonic) Direction
S5,F0 Abort Transaction (S5F0) S,H<->E
Description
Same form as S1,F0.
Structure
Exception
SEMI E5-1104 © SEMI 1982, 2004 114
Stream,Function Name (Mnemonic) Direction
S5,F1 Alarm Report Send (ARS) S,H<-E,[reply]
Description
This message reports a change in or presence of an alarm condition. One message will be issued when the alarm is set and one
message will be issued when the alarm is cleared. Irrecoverable errors and attention flags may not have a corresponding clear
message.
Structure
L,3
1. <ALCD>
2. <ALID>
3. <ALTX>
Exception
None
Stream,Function Name (Mnemonic) Direction
S5,F2 Alarm Report Acknowledge (ARA) S,H->E
Description
Acknowledge or error
Structure
<ACKC5>
Exception
None
Stream,Function Name (Mnemonic) Direction
S5,F3 Enable/Disable Alarm Send (EAS) S,H->E,[reply]
Description
This message will change the state of the enable bit in the equipment. The enable bit determines if the alarm will be sent to the
host. Alarms which are not controllable in this way are unaffected by this message.
Structure
L,2
1. <ALED>
2. <ALID>
Exception
A zero-length item for ALID means all alarms.
Stream,Function Name (Mnemonic) Direction
S5,F4 Enable/Disable Alarm Acknowledge (EAA) S,H<-E
Description
Acknowledge or error
Structure
<ACKC5>
Exception
None
SEMI E5-1104 © SEMI 1982, 2004 115
Stream,Function Name (Mnemonic) Direction
S5,F5 List Alarms Request (LAR) S,H->E,reply
Description
This message requests the equipment to send binary and analog alarm information to the host.
Structure
<ALID
1
, . . . ,ALID
n
>
Exception
A zero-length item means send all possible alarms regardless of the state of ALED.
Stream,Function Name (Mnemonic) Direction
S5,F6 List Alarm Data (LAD) M,H<-E
Description
This message contains the alarm data known to the equipment. There are “m” alarms in the list.
Structure
L,m
1. L,3
1. <ALCD
1
>
2. <ALID
1
>
3. <ALTX
1
>
2. L,3
.
.
m. L,3
1. <ALCD
m
>
2. <ALID
m
>
3. <ALTX
m
>
Exception
If m = 0, no response can be made. A zero-length item returned for ALCD
i
or ALTX
i
means that value does not exist.
Stream,Function Name (Mnemonic) Direction
S5,F7 List Enabled Alarm Request (LEAR) S,H->E,reply
Description
List alarms which are enabled.
Structure
Header only
Exception
None
Stream,Function Name (Mnemonic) Direction
S5,F8 List Enabled Alarm Data (LEAD) M,H<-E
Description
This message is similar to S5,F6 except that it lists only alarms which are enabled.
Structure
Same as S5,F6
Exception
None