Beckhoff C1220 Manuel d'utilisateur télécharger pdf (Page 14)

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Software description of functions 14

Beckhoff Lightbus - PC interface card C1220

Count peripheral modules

The number of modules in the ring can be defined with this function.

ArgumentChannel Length Function

0 1 2

Comment

Request

02 0x06

04 0x06 00 nn Count modules:

nn modules in the ring

04 0x06 01 00 Count modules:

Ring interrupted

Test peripheral module addresses

By means of this function, a check is made as to whether the modules are

still keeping to the addresses they received on initialization.

ArgumentChannel Length Function

0 1 2

Comment

Request

02 0x07

04 0x07 00 00 Addresses correct

04 0x07 01 nn Error at address nn

To guarantee maximum operating reliability, during normal operation this

function can also be run cyclically in the background. In doing so, the

function is activated by setting a bit in the GCB. In the event of an error, a

message is sent to the PC via the GCB.

Continuous sending

The continuous sending function only controls the ’Cycle’ LEDs on the

modules to determine how many modules are still connected to the

transwhere output of the C1220. This function should only be activated if

the 0x0a (Fracture point test) does not return a satisfactory result. On the

software end, continuous sending can only be stopped by a RESET.

ArgumentChannel Length Function

0 1 2

Comment

Request

02 0x08

03 0x08 01 Continuous sending can be stopped by

RESET

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 29 30

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Beckhoff C1220 Manuel d'utilisateur Page 14