Beckhoff CX1100-000x Manual de usuario descargar pdf (Pagina 33)

Product overview

Embedded PC 31

Free Run:

not implemented. Reserved for future use..

K-Bus error code K-Bus error argument

If the K-Bus operation fails (bad terminal, missing end-terminal, severe EMC interference), an error flag is raised in

the GCB and after a K-Bus reset, these two bytes contain the error code and error argument of the occurred fault - if

it still persists.

K-Bus base ptr Inputs / K-Bus base ptr Outputs

These two byte values contain the starting offset for the K-Bus input and output process image area. In most cases

the default offsets should be left unchanged. When changing one of these offsets, a "Remap" or "Reset node" in the

GCB service is needed. Also care must be taken not to overlap with the IP-Link process image area, because in the

CB IP-Link the offset pointers for these areas may also be changed. The Beckhoff automation software TwinCAT

makes use of this base ptr feature and compacts the I/O images in the best way possible.

K-Bus cycle count

This two-byte counter is incremented with each I/O-cycle.

K-Bus cycle time

This is the time elapsed between the initiation and termination of an I/O process image update (K-Bus + IP-Link ).

The time is recorded in units of microseconds and starts with writing a new cycle request to the field "PD cycle

request" and it stops with the termination response in the field "PD cycle ready", in case of CX1100-0002. In case of

CX1100-0003, this time reflects only the K-Bus portion of the total I/O time.

K-Bus bus status

This byte value can take only two states:

1. Byte = 0 → K-bus is ok

2. Byte ≠ 0 → K-bus fault

This information is also reflected in the "Processdata error" field (bit0) of the GCB.

Retry counter

This is a retry counter which is incremented each time the microcontroller needs to redo a cycle because of a

communication error. This counter can be used for judgment of the K-Bus signal quality.

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 65 66

Sin comentarios

Beckhoff CX1100-000x Manual de usuario Pagina 33