4.14 Configuring virtual direct control keys (VDCK)
4.14.1 General information
Direct control keys allow key states to be directly transferred to the PLC. These key signals
are transferred in a 2-byte key image and are evaluated by the PLC as digital inputs. Depending
on the SINUMERIK operator panel being used, there are different options of using direct control
keys, e.g. using a direct control key module or machine control panel.
Virtual direct control keys (VDCK)
The PCU base software extends the direct key configuration options to include virtual direct
control keys (Virtual Direct Control Keys).
VDCK supports multitouch operation therefore supplements the new operating concept of
SINUMERIK multitouch panels (e.g. OP 015 black, OP 019 black) to include the corresponding
virtual direct control keys.
Functional scope
Maximum number of suppor‐
ted direct control keys:
16
Direct control keys that can
be simultaneously actuated:
Depending on the multitouch functionality of the operator panel
being used, e.g.
● OP 015 black: 8 touch points
● OP 019 black: 5 touch points
Layout of the direct control
keys
1 global direct control key layout for all HMI operating screens
Assignment of the direct con‐
trol keys
Direct control keys 1…16 are permanently assigned bits (0…15)
in the image. Deactivating individual direct control keys (or using
less than 16 direct control keys) does not influence the assign‐
ment to the relevant bits.
Signal transfer 1-channel
NOTICE
Signals of the virtual direct control keys are transferred from the HMI to the PLC through 1
channel
In addition, use a permanently wired acknowledgment button or a 2nd channel from the HMI
in order to guarantee the functional safety.
PLC basic program functionality
The direct control key functionality in the PLC basic program (activating the data transfer,
interface signal, addressing, alarms etc.) is identical when using virtual direct control keys and
real direct control keys.
Configuration of the system
4.14 Configuring virtual direct control keys (VDCK)
PCU Base Software (IM10)
Commissioning Manual, 12/2017, 6FC5397-1DP40-6BA1 45
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