User guide

15 RG-SDMOD

Drive Control & Communication

5.4 Drive Status - Registers #24-29

5.4.1 Reading Register #24

When reading register #24, the group of words requested can be either 1 or 6. This is an exception to the

rule of being able to read only one register at a time. If 6 words are requested at register #24, the following

will be returned:

Table 10: 6 Register read at #24

Parameter Data Byte

Command Speed D1H D1L

Actual Speed D2H D2L

Load D3H

Operation Status D3L

Rotational Direction D4H

Control Mode D4L

Speed Command Source D5H

Speed Reference Status D5L

Present Fault D6H

Command Rotation D6L

NOTE 4a - Command Speed (Register #24 Bytes D1H and D1L or Register #24)

• In tenths of a Hz

• Most signiﬁcant byte is ﬁrst, followed by Least signiﬁcant

• Example: 02 01 in hex converts to 51.3Hz in decimal (assumed 1 decimal place).

NOTE 4b - Actual Speed (Register #24 Bytes D2H and D2L or Register #25)

• In tenths of a Hz

• Most signiﬁcant byte is ﬁrst, followed by Least signiﬁcant

NOTE 4c - Load (Register #24 Byte D3H or Register #26 DH)

• In percent of full load

• Example: 64 (one byte in hex) ==> 100 in decimal ==> 100% (drive load).