Broadcasting - IMO VXSM75-1 Instruction Manual

characters. Refer to section 9-4-11 Function
Code List for details.
(7) Special additional data
This is normally a space (20H). In a
response frame issued by an inverter to
request for frequency monitor (M09), a
minus sign is set in ASCII during reverse
rotation output.
(8) Data
In a selecting (writing) request frame sent
from the host to an inverter, designate
writing data. Refer to section 9-4-10 Data
Type. In a polling (reading) frame, set space
or arbitrary letter or number character. in a
selecting response frame sent from an
inverter to the host, data "0000" or an error
code is contained, and in a polling frame,
data or an error code is contained.
(9) End-of-text character (ASCII; ETX)
03H in binary.
(10)Upper digit and lower digit of checksum
A binary sum of all the characters from tens
digit of the station address to the end-of-text
character is obtained and the lower two
digits of it in hexadecimal notation are
expressed in ASCII codes. Set in the upper
case.
Example. When the binary sum is "17EH"
The upper digit of the checksum is "7" in
ASCII. The lower digit of the checksum is "E"
in ASCII.

9-4-8 Broadcasting

An operation command or frequency
command destined to station address "99" is
received and processed by all the inverters
as broadcasting. However, no response is
issued by the inverters.
Specifications 9-18