AEG 381 D Specifications download pdf (Page 55)

D1.2.1 PCS midi driver variables

Seven variables can be set for the AEG250PX driver in the PCSPRO software under

the menu item Project/Driver Parameter.... The content of the variables can be

examined with the PCS offline menu.

1 AA variable: PCS Time-out time

The time-out time determines the maximum admissible time for the order processing

of the synchronization word in the programmable controller. Default value for this

time is 4000. This corresponds to 4000 ms. = 4.0 seconds. Admissible values for

the variable are from 2000 to 19990. This corresponds to 2 to 19.99 seconds.

2 - 5 AC, AD, AE and AF variables: Baud rate and transfer type

The baud rate and interface, the PCS and the programmable controller use for

communication are set with the PCS DIL-switches 5 and 6. Here, you select the

same settings that you have selected in PCSPRO under the DRIVER VARIABLES

menu item. The default settings are shown In the table below.

DIL5 DIL6 Variable Preset values

off off AC 19200 Baud

on off AD 9600 Baud

off on AE 19200 Baud

on on AF 9600 Baud

All baud rates and transfer types that can be selected using the DIL-switches are

shown in the following table.

Interface Baud rate

RS 232 19200

RS 232 9600

6 AG variable: Send/receive buffer

Determines the first used flag word in the programmable controller for the data

interchange area. Thereby, the variable has an offset function. Possible values

are from 1 to 15000. The default setting for the flag word is 1256.

7 AJ variable: Task per package

Determines the number of the sub-packages for the data interchange. The default

setting is AJ = 50. If AJ is reduced, then the transfer time of tasks with high priority

is decreased (e.g. key tasks). Tasks with lower priority (e.g. present values) will be

transferred correspondingly less often.

During configuration of the PCS, both the application program with data and a

selected driver are transferred. The driver is called AEG250PX.DRV.

First commissioning

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AEG 381 D Specifications Page 55