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SIPLACE GEM SW Version GEM 505.01 HOST Interface Manual Page 20 of 236 ©Siemens AG, all rights reserved 1.10 State Diagrams This document uses several Finite State Machine diagrams to describe the current condition of th…

SIPLACE GEM SW Version GEM 505.01

HOST Interface Manual

This illustration shows one S25 machine with an MTC. There is just one feeder location

on each side.

Variables are only for configured equipment valid.

TWIN-Input

conveyor

TWIN-First

Processing

conveyor

TWIN-Output

conveyor

Input

conveyor

First Processing

conveyor

Output

conveyor

Direction of transport

Conveyor 2 (left)

Conveyor 1

(i ht)

Gantry 1

Revolverhead 1

Gantry 2

Revolverhead 2

Location

SIPLACE GEM SW Version GEM 505.01 HOST Interface Manual

1.10 State Diagrams

This document uses several Finite State Machine diagrams to describe the current

condition of the Equipment’s SECS link, material handling mechanisms, and process

cycle. Each Finite State Machine diagram includes a State Diagram and a complete

description of the states and state transitions.

All Finite State Diagrams have been prepared in the format specified in the GEM

standard. This notation is required as a fundamental part of GEM compliance and must

be included in the Equipment SECS Interface Documentation. This notation is the

„Statechart“ notation developed by David Harel.

The following are the major characteristics of this notation as it is used in this document:

Each state is represented by a rectangle with rounded corners.

A collection of sub-states may be grouped into a super-state.

The entity described by the diagrams will be in one and only one of the sub-states at all

times.

Variables representing the current state of an entity do not contain values for super-

states, only the lowest sub-state is represented.

State transitions are represented by single-headed arrows.

Each state transition is a Collection Event, and it has a unique Collection Event ID (CEID)

An arrow directly from a super-state to another state describes a Collection Event that

can occur while the entity is in any one of the sub-states contained in the super-state.

An arrow directly into a super-state to the H* (history) symbol describes a transition to the

lowest sub-state which described the entity just before the transition out of the super-

state.

An arrow directly into a super-state to the C (conditional) symbol describes a transition to

a particular sub-state based on some other relevant data. The conditional data is not

represented in the diagram but is described in the associated text.

SIPLACE GEM SW Version GEM 505.01

HOST Interface Manual

2 Message Summary

2.1 Host to Equipment

This section describes primary SECS messages sent by the Host, and the associated

reply messages from the Equipment.

The column headed "CState" in the table below indicates the control state the Equipment

must be in to accept the message. The current value of the Equipment Control State can

be found in variable CONTROLSTATE (vid 1002006). Possible values for this column

are as follows:

Value State

1 Off-Line/Equipment Off-Line

2 Off-Line/Attempt On-Line

3 Off-Line/Host Off-Line

4 On-Line/Local

5 On-Line/Remote

Unlawful messages sent to the Equipment while Control State is Off-Line (1, 2, or 3) will

be replied to with a SnF0 message. Thus, the Host will only ever see values of 4 or 5 for

CONTROLSTATE.

In the column headed "Notes", those messages marked with "E" are extensions beyond

GEM. Those messages marked with "N" are provided for non-GEM or older GEM

compatibility.

Primary Reply CState Description Notes

S1F1 S1F2 4,5 Are You There

S1F3 S1F4 4,5 Selected Status

S1F11 S1F12 4,5 Status Variable Namelist

Request

S1F13 S1F14 All Connect Request

S1F15 S1F16 4,5 Request Off-Line

S1F17 S1F18 1,2,3 Request On-Line

S1F65 S1F66 All Connect Request N

S2F13 S2F14 4,5 Equipment Constant

Request

S2F15 S2F16 4,5 New Equipment Constant

Send

S2F17 S2F18 4,5 Date and Time Request

S2F21 S2F22 5 Remote Command N

S2F23 S2F24 4,5 Trace Initialize

S2F25 S2F26 4,5 Loopback Diagnostic E

S2F27 S2F28 5 Initiate Processing

Request

S2F29 S2F30 4,5 Equipment Constant E