Operating Instructions – Electronic Motor DRC.-..-DAC
147
9
Functional description
Communication with AS-Interface Double Slave GLK31A
9.1.3
Function of the B-slave
The B-slave is used to transmit various status and control words between the AS-
Interface master and the DRC inverter.
The use of serial AS-Interface data transmission (analog profile) makes it possible to
write and read DRC parameters and display values.
• According to profile S-7.A.F.5, the AS-Interface master acyclically transmits several
data bytes to the GLK31A option (B-slave).
• The microcontroller of the GLK31A option processes these signals and transmits
them according to the MOVILINK
®
protocol (parameter telegram) via the SBus
interface of the inverter.
• The DRC inverter transmits the response telegram to the GLK31A option via the
SBus interface.
• The GLK31A option converts the response telegram and transmits it to the AS-
Interface master via serial AS-Interface data transmission (analog profile).
For communication via the SBus interface, the acyclical parameter transmission of the
B-slave has a higher priority than the cyclical control word of the A-slave. Due to the
cycle time on the AS-Interface, at least one process data protocol is performed between
the parameter transmissions.
Communication via the B-slave is always performed acyclically. Transmission of
parameters via the internal SBus interface requires a corresponding parameter call of
the AS-Interface master in conjunction with a higher-level controller.
