Baumuller BUS 6 VC, Руководство пользователя

Страница: 82 / 110

Parameter
80
V-Controller (BUS 6 VC)
5.03047.01
Baumüller Nürnberg Electronic GmbH & Co. KG
7.15 Digital Inputs
The module and the four available digital inputs enable 16 bit parameter programming.
Four parameters are assigned to each input:
– DI x target Pxxx : Input of target parameter number
– DI x bit selection : Selection of the target parameter bits which are to be altered.
– DI x LOW pattern : Bit pattern which is written into the target parameter if switch is OFF.
– DI x HIGH pattern : Bit pattern which is written into the target parameter if switch is ON.
The inputs only evaluate the transitions
Hence it is possible to manipulate the same parameter via several inputs.
Example: Two inputs act on the same parameter bit
The 4 inputs are sampled every 4 ms at an interval of approx. 20 µs. In the event of simultaneous status
change of two signals the signal with the higher priority is taken over (digital input 1 has the lowest pri-
ority, digital input 4 the highest).
Example of programming procedure:
1. Enter target parameter number in DI x target Pxxx of desired input.
⇒
Has no effect on the target parameter yet.
2. Enter DI x bit selection :
⇒
all bits which have not been selected are set to 0 in the LOW and HIGH patterns;
the selected bits are set to 0 in the target parameter and are replaced by the corresponding bit
pattern (according to switch position).
NOTE
The activation of a digital input results in setting all parameters of the selected input.
Following order must be observed:
1. DO x target Pxxx
2. DO x bit selection
3. DO x LOW pattern
4. DO x HIGH pattern
In order to deactivate an input the DI target Pxxx must be set to 0.