YASKAWA A1000 Technical Manual page 551


H5-05: Communication Fault Detection Selection
Enables or disabled the communication error (CE) detection for MEMOBUS/Modbus communications.
No.
H5-05
Setting 0: Disabled
No communication error detection. The drive continues operation.
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.

H5-06: Drive Transmit Wait Time
Sets the time the drive waits after receiving data from a master until responding data.
Note: After changing this parameter, the power must be cycled to enable the new setting.
No.
H5-06
Figure C.5

H5-07: RTS Control Selection
Enables or disables RTS control.
Note: After changing this parameter, the power must be cycled to enable the new setting.
No.
H5-07
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.

H5-09: Communication Fault Detection Time
Sets the time the communications must be lost before the drive triggers a CE fault.
No.
H5-09

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
Setting 0: 0.1 V units
Setting 1: 1 V units
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
Name
Communication Fault Detection Selection
Name
Drive Transmit Wait Time
PLC→Drive
Command message Response message
24 bit length H5-06 setting
Figure C.5 Drive Transmit Wait Time Setting
Name
RTS Control Selection
Name
Communication Fault Detection Time
Name
Unit Selection for MEMOBUS/Modbus Register 0025H
C.4 MEMOBUS/Modbus Setup Parameters
Drive→PLC PLC→Drive
Command message
Setting Range Default
0 or 1
Setting Range Default
5 to 65 ms
Time
Setting Range Default
0 or 1
Setting Range Default
0.0 to 10.0 s
Setting Range Default
0 or 1
1
5 ms
1
2.0 s
0
C
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