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C.4 MEMOBUS/Modbus Setup Parameters
YASKAWA ELECTRIC
SIEP C710636 02B YASKAWA U1000 Technical Manual
563
ME
MOBUS/
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H5-05: Communication Fault Detection Selection
Enables or disabled the communication error (CE) detection for MEMOBUS/Modbus communications.
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.
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H5-06: Drive Transmit Wait Time
Sets the time the drive waits after receiving data from a master until responding data.
Figure C.6
Figure C.6 Drive Transmit Wait Time Setting
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H5-07: RTS Control Selection
Enables or disables RTS control.
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.
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H5-09: Communication Fault Detection Time
Sets the time the communications must be lost before the drive triggers a CE fault.
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H5-10: Unit Selection for MEMOBUS/Modbus Register 0025H
Sets the unit for the output voltage monitor value in MEMOBUS/Modbus register 0025H.
Setting 0: 0.1 V units
Setting 1: 1 V units
No.
Name
Setting Range
Default
H5-05
Communication Fault Detection Selection
0 or 1
1
No.
Name
Setting Range
Default
H5-06
Drive Transmit Wait Time
5 to 65 ms
5 ms
No.
Name
Setting Range
Default
H5-07
RTS Control Selection
0 or 1
1
No.
Name
Setting Range
Default
H5-09
Communication Fault Detection Time
0.0 to 10.0 s
2.0 s
No.
Name
Setting Range
Default
H5-10
Unit Selection for MEMOBUS/Modbus Register 0025H
0 or 1
0
Command message
Response message
Command message
PLC→U1000
PLC→U1000
U1000→PLC
Time
24 bit length
H5-06 setting
SIEP_C710636_02B_1_0.book 563 ページ 2015年11月25日 水曜日 午後4時56分