IDN 301 (S-0-0301) Allocation of Real-time Control Bit 1

Assigns a control signal IDN to the real-time control bit 1 (RTC bit 1, MDT control word bit 6). Two RTC bits are defined within the MDT control word (bits 6 and 7) and may be updated every communication cycle by the master. The following rules govern the assignment and use of RTC bit:

Only certain control signal IDNs of type binary may be assigned to the real time control allocation IDNs.

The exception is IDN 0 , which indicates that the real time control bit is undefined.

The following IDNs may be assigned as RTC signals: IDN 0 , IDN 405 ( IDN 3039 = 0), IDN 406 ( IDN 3039 = 0) and IDN 3038 ( IDN 3039 = 1).

A new RTC bit assignment must be valid within the drive before the service channel busy bit is being reset. After the service channel busy bit from the drive is reset, the master can operate with the RTC bit 1 in the master control word.