---
title: "CICS ATI, START Real time Macros for new programmers"
description: "Command macros to be used in CICS for ATI and START functions"
url: https://srinimf.com/2015/07/14/mainframe-cics-ati-start-an-example/
date: 2015-07-14
modified: 2018-04-21
author: "Srini"
image: https://i0.wp.com/srinimf.com/wp-content/uploads/2018/04/healthy-person-woman-sport-e1524324595195.jpg?fit=624%2C570&ssl=1
categories: ["CICS Tips"]
tags: ["CICS tips and Tricks"]
type: post
lang: en
---

# CICS ATI, START Real time Macros for new programmers

Life cycle of START Command in [CICS](http://srinimf.com/2015/07/12/mainframe-advanced-cics-for-senior-software-developers1-of-5/) as follows. START command executes through ATI (Automatic time ordered transaction initiation)

- A user task issues a START command that’s processed by interval control.
- Interval control creates an ICE that indicates the trans-id, expiration time, and terminal-id for the task to be started.
- If data is passed to the started task, interval control invokes temporary storage control to save that data.
- Temporary storage control saves the data in the temporary storage file.

**Different START commands:**

**A command that schedules a task for immediate execution**

EXEC CICS

START TRANSID(‘LST1’)

END-EXEC.

**A command that attaches the task to a terminal**

EXEC CICS

START TRANSID(‘LST1’)

TERMID(‘L86R’)

END-EXEC.

**A command that uses the TIME option to specify an expiration time**

EXEC CICS

START TRANSID(‘LST1’)

TIME(‘170000’)

END-EXEC.

**A command that uses the INTERVAL option to specify an expiration time**

EXEC CICS

START TRANSID(‘LST1’)

INTERVAL(001600)

END-EXEC.

**A command that uses the AT option to specify an expiration time**

EXEC CICS

START TRANSID(‘LST1’)

AT HOURS(10) MINUTES(45)

END-EXEC.

**A command that uses the AFTER option to specify an expiration time**

EXEC CICS

START TRANSID(‘LST1’)

AFTER MINUTES(1) SECONDS(32)

END-EXEC.

**A command that passes data to the started task**

EXEC CICS

START TRANSID(‘LST1’)

FROM(ITEM-NUMBER1)

END-EXEC.

**Also read**

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