Data Access Via Plc (Command Channel, Db 41) - Siemens SINUMERIK 840C Installation Instructions Manual

Hide thumbs Also See for SINUMERIK 840C:

Table of Contents

12 Functional Descriptions

12.19.5 Interpolation and compensation with tables

y=No. of the IKA configuration; max. 2 places

The data set for an IKA configuration most not be larger than 255 characters.

Output of IKA curves

T5=x T6=x (up to SW 3)

T5=x T6=x T55=x (SW 4 and higher)

y=No. of the curve; max. 2 places

Output of IKA points

y=No. of the curve point; max. 5 places

Data access via PLC (command channel, DB 41)

Transfer of the IKA data from the PLC via the command channel is triggered by function

numbers 10 and 11. The data can be read (fct. no. 10, read IKA data) and written (fct. no. 11,

write IKA data). These functions are triggered in the same way as existing command channel

The parameters of %IKA1, %IKA2, %IKA3, of IKA Stage 2 are thus no longer supported (see

Section Overview of valid IKA data).

Extended functionality via communications area (DB 48)

As from SW 6 it is possible to act upon the NCK function "IKA" from the PLC via the extended

data block DB 48. Different signals are defined for each IKA relation which are used to

activate, deactivate and freeze a particular IKA relation. "Freeze" means that the last value

output from the IKA relation remains unchanged ("frozen") until that condition ("IKA frozen") is

changed. This function makes it possible to start several IKAs simultaneously. Output signals

have also been defined so that the PLC can recognize the status of every IKA. This makes it

possible to respond to a particular status, for example.

More user manuals on

For further details about the "Command Channel" function,

please refer to the following documentation:

SINUMERIK 840C,

Interface Description, Part 1

ManualsBase.com

6FC5197- AA50

SINUMERIK 840C (IA)

Simodrive 611-d