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7 COMMUNICATIONS
7.1 Settings for Servo Motor Drive
Set up the parameters of the servo motor drive to perform the Modbus communications.
1.1 Protocol selection
◆
The parameters with “*”indicate that they are enabled only when power on again after parameter setting.
Parameter
Name
Setting range
Default value
P2.97
Communication protocol
selection
0: Reserved
1:Modbus RTU(HL)
2
：
Modbus RTU(LH)
5
：
Host computer protocol
1
Set to 1 (Modbus RTU)
。
1.2 Station number/communication baud rate
Parameter
Name
Setting range
Default value
*P2.72
Station number
1~31
1
*P2.73
Communication baud rate
(RS485)
0:38400 [bps]
1:19200 [bps]
2:9600 [bps]
3:115200 [bps]
4
：
57600 [bps]
5
：
4800 [bps]
6
：
2400 [bps]
7
：
1200 [bps]
0
Set a
servo motor drive‟s station number (slave‟s station number) and a communication baud rate.
1.3 Character configuration
Parameter
Name
Setting range
Default value
*P2.93
Selection of parity/stop bit
0:8,E,1
1:8,O,1
2:8,N,1
3:8,E,2
4:8,O,2
5:8,N,2
0
Set existence and logic of a parity and a stop bit length.
1.4 Response time and communication time over
Parameter
Name
Setting range
Default value
P2.94
Response time
0.00~1.00 [s] (
※
)
0.00
P2.95
Communication time over
0.00 [s]: No detection
0.01~9.99 [s]
0.00
(
※
)
Actual response time is set to P2.94 setting or {time for 3 char servo motor drive‟s processing time},
whichever is longer.
Set the response time and communication time over parameters if needed.
