Technical data

Note

If a previously defined delay time is not yet elapsed when a

further delay time is defined, the previously defined time is lost

and the new delay time started.

Result

After correct processing of OB 153, the condition code bits OR,

ERAB and OS = 0.

When OB 153 is called with the function no. ’2’ or ’3’, ACCU-1-L

contains the remaining time to run in milliseconds.

If no delay job is active when OB 153 is called with function no. ’2’

or ’3’, ACCU-1-L contains the value ’0’.

Possible errors

The errors listed in the following table can occur.

OB 31 (other runtime errors) is called. If OB 31 is not loaded, the

CPU goes to the STOP mode.

In both cases, error IDs are entered in ACCU-1-L and ACCU-2-L (see

the table below).

ACCU-1-L ACCU-2-L Bedeutung

1A4FH 0001H

0002H

Function no. = 0 or >3

Illegal delay time

Examples

Table 6-8 OB 153 error IDs

Define and start delay time:

When an AUTOMATIC WARM RESTART is performed, after 5 seconds a certain

STEP 5 operation sequence must be run through once. To do this, the

delay time is defined and started in start-up organization block OB 22.

The STEP 5 operations in OB 22 for calling OB 153:

:L KF +5000 Value for ACCU-2-L: 5000 ms

:L KF +1 Value for ACCU-1-L: function no. = 1 for

: "define and start delay time"

:JU OB 153 Call OB 153

OB 153: Set/Read Time for Delayed Interrupt

CPU 928B Programming Guide

C79000-B8576-C898-01

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