Setting 0: Disabled. RTS is always on.
Use this setting with point-to-point RS-422 communications.
Setting 1: Enabled. RTS switches while sending.
Use this setting with RS-485 communications or when using multi-drop RS-422 communications.
n
H5-09: Communications Fault Detection Time
Sets the time the communications must be lost before the drive triggers a CE fault.
No.
Name
Setting Range
Default
H5-09
Communications Fault Detection Time
0.0 to 10.0 s
2.0 s
n
H5-10: Unit Selection for MEMOBUS/Modbus Register 0025H
Sets the unit for the output voltage monitor value in MEMOBUS/Modbus register 0025H.
No.
Name
Setting Range
Default
H5-10
Unit Selection for MEMOBUS/Modbus Register 0025H
0 or 1
0
Setting 0: 0.1 V units
Setting 1: 1 V units
n
H5-11: Communications Enter Function Selection
Selects whether an Enter command is necessary to change parameter values via MEMOBUS/Modbus communications.
.
No.
Name
Setting Range
Default
H5-11
Communications Enter Function Selection
0 or 1
0
Setting 0: Enter command necessary
Parameter changes become effective after an Enter command. An Enter command must only be sent after the last parameter
change, not for each single parameter.
Setting 1: Enter command not necessary
Parameter value changes become effective immediately without the need to send an Enter command.
n
H5-12: Run Command Method Selection
Selects the type of sequence used when the Run command source is set to MEMOBUS/Modbus communications
(b1-02, b1-16 = 2).
No.
Name
Setting Range
Default
H5-12
Run Command Method Selection
0 or 1
0
Setting 0: FWD/Stop, REV/Stop
Setting bit 0 of MEMOBUS/Modbus register 0001H will start and stop the drive in the forward direction. Setting bit 1 will
start and stop the drive in reverse.
Setting 1: Run/Stop, FWD/REV
Setting bit 0 of MEMOBUS/Modbus register 0001H will start and stop the drive. Setting bit 1 changes the direction.
n
H5-14: Communication Error (CE) Go-To-Frequency
Sets the speed at which the drive will run when H5-04 = 4 and a CE is present.
No.
Name
Setting Range
Default
H5-14
Communication Error (CE) Go-To-Frequency
0.0 to 400.0 Hz
0.0 Hz
n
H5-15: Communication Error (CE) Go-To-Timeout
Sets the time for which the drive will run at the speed set in H5-14 when H5-04 = 4 (Run at H5-14) before triggering a CE
fault.
Setting this parameter to 0 will disable the timeout.
C.4 MEMOBUS/Modbus Setup Parameters
YASKAWA TOEPYAIUPW01A YASKAWA AC Drive - U1000 iQpump Matrix Drive User Manual
379
C
MEMOBUS/Modbus Communications