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SEMI E30-1103 © SEMI 1992, 2003 58 Host sends informati on to an equipment’s display device and th en overwrites the inform ation before operator recog- nizes message: COMMENTS HOST EQUIPMENT COMMENTS Host sends textual …

SEMI E30-1103 © SEMI 1992, 2003

The equipment must be capable of passing information to the host that has been entered from the operator’s

equipment console. This information is intended for host applications and is not processed by the equipment.

The equipment has no responsibility for interpreting any of the data passed to or from the host using this method.

4.8.4 Requirements

— Any new Terminal Display message sent by the host shall overwrite an unrecognized message at the same

equipment terminal.

— The equipment must provide a display device capable of displaying at least 160 characters to the operator.

— The equipment must provide a mechanism for displaying information sent to it by the host.

— The equipment must provide an indicator to notify

the operator when an unrecognized message is

present.

— The equipment must provide a mechanism for the

operator to indicate message recognition (e.g., push

button, terminal function).

— The equipment must provide a means for alpha

numeric data entry that can be used by the operator.

— The equipment must support operator entry of at

least 160 characters per message.

— The equipment must have a mechanism to send

operator-entered messages to the host.

— The equipment must support single-block messages

as a minimum. Support of multi-block messages is

optional.

— A Terminal Display message received by the

equipment with a zero length TEXT data item shall

be accepted and replace any previous unrecognized

message, but shall not itself be considered an

unrecognized message. This provides a method of

clearing an unrecognized message and turning off

the unrecognized message indicator.

4.8.5 Scenarios

Host sends information to an equipment’s display device:

COMMENTS HOST EQUIPMENT COMMENTS

Host sends textual information S10,F3-->

to equipment for display to the

operator on terminal x.

<--S10,F4 Equipment acknowledges request

to display text. (Equipment

sets unrecognized message

indicator.)

Operator indicates message

recognition.

(Equipment clears unrecognized

message indicator.)

<--S6,F11 Message recognition event.

(See Section 4.2.1, Event Data

Collection, for details.)

Host acknowledges Optional: S6,F12-->

<--S10,F1 Operator responds with text

via terminal x.

Host acknowledges receipt S10,F2-->

of operator text.

SEMI E30-1103 © SEMI 1992, 2003

Host sends information to an equipment’s display device and then overwrites the information before operator recog-

nizes message:

COMMENTS HOST EQUIPMENT COMMENTS

Host sends textual information S10,F3-->

to equipment for display to

the operator on terminal x.

<--S10,F4 Equipment acknowledges request

to display text. (Equipment

sets unrecognized message

indicator.)

Host sends textual information S10,F3-->

to equipment for display to the

operator on terminal x. This

message overwrites the first one

sent by the host since it is

still unrecognized.

<--S10,F4 Equipment acknowledges request

to display text. (Equipment

sets unrecognized message

indicator.)

Operator indicates message

recognition. (Equipment clears

unrecognized message

indicator.)

<--S6,F11 Message recognition event. (See

Section 4.2.1, Event Data

Collection, for details.)

Host acknowledges S6,F12-->

Operator sends information to the host:

COMMENTS HOST EQUIPMENT COMMENTS

<--S10,F1 Operator sends textual

information via equipment

terminal x.

Host acknowledges receipt of S10,F2-->

operator initiated message.

Optional:

Host responds with information S10,F3-->

for display to the operator

on terminal x.

<--S10,F4 Equipment acknowledges receipt

of request to display text.

(Equipment sets unrecognized

message indicator.)

Operator indicates message

recognition.

<--S6,F11 Message recognition event.

(See Event data collection for

details.)

Host acknowledges S6,F12-->

Host sends a multi-block display message:

COMMENTS HOST EQUIPMENT COMMENTS

Send information S10,F5-->

<--S10,F6 Accepted or denied.

[IF]

Message from host is multi-

block and multi-block is not

supported by the equipment,

[THEN]

<--S10,F7 Send Multi-block Not Allowed.

[END_IF]

4.9 Error Messages

4.9.1 Purpose — Error messages provide the host with information describing the reason for a particular message

or communication fault detected by the equipment.

4.9.2 Definitions

Communication Fault — Refer to Section 2 for the definition.

Message Fault — Refer to Section 2 for the definition.

4.9.3 Detailed Description — The equipment must inform the host that it cannot process a message due to an

incorrect:

— device ID,

— message stream type,

— message function,

— message format, or

— data format.

The equipment must inform the host if the message has more data than it can handle.

The equipment must inform the host if the equipment’s transaction timer expires.

The equipment shall treat the above conditions as application-level errors and shall not take any further action on

any message in error.

Error messages are invoked whenever the equipment detects communication or message faults.

4.9.4 Requirements — Support of all Stream 9 messages.

4.9.5 Scenario

Message Fault Due to Unrecognized Device ID:

COMMENTS HOST EQUIPMENT COMMENTS

Host sends a message. Sx,Fy-->

Equipment detects an

unrecognized device ID within

the message from the host.

<--S9,F1 Equipment reports to the host

that an “unrecognized device

ID” was detected in the

received message.