YASKAWA A1000 HHP Programming Manual page 320

B.4 MEMOBUS/Modbus Setup Parameters
Setting 1: Enabled
If the drive does not receive data from the master for longer than the time set to H5-09, then a CE fault will be triggered and
the drive will operate as determined by parameter H5-04.
n H5-06: Drive Transmit Wait Time
Sets the time the drive waits after receiving data from a master until responding data.
No.
H5-06
n H5-07: RTS Control Selection
Enables or disables RTS control.
No.
H5-07
Setting 0: Disabled. RTS is always on.
Use this setting with point-to-point or multi-drop RS-422 communications.
Setting 1: Enabled. RTS switches while sending.
Use this setting when using RS-485 signals for communications or when using the RS-422 signals for point-to-point
communications.
n H5-09: CE Detection Time
Sets the time the communications must be lost before the drive triggers a CE fault.
No.
H5-09
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.
H5-10 Unit Selection for MEMOBUS/Modbus Register 0025H
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.
to Enter Command on page
320
Name
Drive Transmit Wait Time
PLC→Drive
Command Message Response Message
24 Bit length H5-06 setting
Figure B.6 Drive Transmit Wait Time Setting
Name
RTS Control Selection
Name
CE Detection Time
Name
344.
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
Drive→PLC PLC→Drive
Command Message
24 Bit length 5 ms
Setting Range
5 to 65 ms
Time (sec)
Setting Range
0, 1
Setting Range
0.0 to 10.0 s
Setting Range
0, 1
Default
5 ms
Default
1
Default
2.0 s
Default
0
Refer