Omron M1 Series User Manual page 737

8-10 Command via Communications
The RUN command and Frequency Reference can be instructed via communication.
The RUN command and Frequency Reference are input according to the command value set to pa-
rameter S.
Reading and writing to parameter S is performed by accessing the coil No. or register No. of the appli-
cable Modbus communication. (Refer to 8-9 Modbus Communication Data Lists on page 8-34.)
Priority can forcibly be given to commands via communication also when a command other than via
communication is currently selected.
8-10-1 RUN Command via Communications
To input the RUN command via communications, select "4: RS-485 communication" at RUN Com-
mand Selection (F02/E102).
The operation is performed according to the Forward command (FWD) or Reverse command (REV)
from Operation command (S06).
Parameter No.
F02
E102
S06
Related function
*1. To enable switching to the 1st and 2nd control, allocate "12: SET (2nd control)" to either of input terminal
[DI1] to [DI7].
8-10-2
Frequency Reference via Communications
To input the Frequency Reference via communications, select "14: RS-485 communication" at Fre-
quency Reference Selection (F01/C30).
• The Frequency Reference can be set in three formats via Modbus communication and the USB
communication.
Frequency Reference (S01):
Frequency Reference (S05):
Speed Command via Communication (S19):
• Compensation values can be set for the frequency setting via communication at Set-point Factor
Numerator via Communication (C89) and Set-point Factor Denominator via Communication (C90).
Frequency reference =
M1 Series Standard Type User's Manual (I669)
Function name
1st RUN Command Selec-
tion
2nd RUN Command Selec-
*1
tion
Operation command
Frequency setting
×
via communications
8 Communications Functions
Data
4: RS-485 communication
Bit1: REV
Bit0: FWD
Input Terminal [DI6] Function Selection (E98), Input Terminal
[DI7] Function Selection (E99)
Refer to 5-9-1 Input Terminal Functions on page 5-51.
Value obtained by converting ±20000 as the Maximum Out-
put Frequency (F03/A01)
Value in 0.01 Hz units
Value in 1 r/min units
C89: Set-point Factor Numerator via Communication
C90: Set-point Factor Denominator via Communication
Default
Unit
data
2 -
0 -
8
8-87