Yaskawa F7 Drive Programming Manual - Manual (Page 120)

Programming 112
H5-02 Communications Speed Selection
H5-03 Communications Parity Selection
Parameters H5-02 and H5-03 configure the Drives MEMOBUS communications via the RS-485/422 terminals on the
removable terminal block. Configure H5-02 and H5-03 to match the settings of the master controller of the serial network.
After changing the H5-02 or H5-03 parameter, the power to the Drive must be cycled for the change to take effect.
If either the speed or parity value is changed via the serial communications, the serial communications will cease to operate
until the Drive power is cycled.
It may be necessary to avoid the 19.2 K baud setting if frequent serial communications errors occur at that baud rate.
H5-04 Stopping Method After Communication Error
The setting of parameter H5-04 will determine the Drive’s reaction to a serial communications fault such as the CE fault. The
Drive can be programmed to either ramp to a stop in the time specified by C1-02 (H5-04= “0: Ramp to stop”), coast to a stop
(H5-04= 1), ramp to a stop at the special fast stopping time specified by C1-09 (H5-04= “2: Fast-Stop”), or continue operating
using the commands received before the serial communication fault and flashing an alarm on the digital operator (H5-04= “3:
Alarm Only”).
H5-05 Communications Error Detection Selection
The Drive can be configured by parameter H5-05 to recognize a CE fault whenever serial communications time-out. If H5-05=
“1: Enabled”, the Drive will fault if serial communication responses are not received within 2 seconds. Drive power should be
cycled after a change is made to this parameter.
Setting Description
0 1200 Baud
1 2400 Baud
2 4800 Baud
3 9600 Baud (factory default)
4 19200 Baud
Setting Description
0 No Parity (factory default)
1 Even Parity
2 Odd Parity
Setting Description
0 Ramp to Stop
1 Coast to Stop
2 Fast-Stop
3 Alarm Only (factory default)
Setting Description
0 Disabled
1 Enabled (factory default)