YASKAWA U1000 Series Technical Manual page 493

Setting 0: Ramp to stop (uses the deceleration time currently enabled)
Setting 1: Coast to stop
Setting 2: Fast Stop
Setting 3: Alarm only (continue operation)
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.
No.
H5-06
Figure C.5
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 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
YASKAWA ELECTRIC SIEP C710636 03A YASKAWA U1000 Technical Manual
Name
Communication Fault Detection Selection
Name
Drive Transmit Wait Time
PLC→U1000 U1000→PLC
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
C.4 MEMOBUS/Modbus Setup Parameters
Setting Range
0 or 1
Setting Range
5 to 65 ms
PLC→U1000
Time
Command message
Setting Range
0 or 1
Setting Range
0.0 to 10.0 s
Default
1
Default
5 ms
common_
TMonly
Default
1
Default
2.0 s
C
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