14-15
14 Serial Communications
CP1E CPU Unit Software User’s Manual(W480)
14-4 Modbus-RTU Easy Master Function
14
14-4-4 Programming Examples
CP1W-CIF11/12 Settings
Set the DIP switch as shown in the following table
3G3MV Settings
Set the DIP switch as follows:
• SW2, pin 1 : ON (terminating resistance connected) Terminating resistance for RS422/485
communications
• Set the following parameters.
No. Setting ON / OFF Description
1 Terminating resistance selection ON Connects terminating resistance
2 2/4-wire selection ON 2-wire connections
3 2/4-wire selection ON 2-wire connections
4 − OFF Always OFF
5 RS control for RD ON Enabled
6 RS control for SD ON Enabled
No. Name Setting Description
n003 RUN command selection 2 RS-422/485 communications is enabled.
n004 Frequency reference selection 6 Frequency reference through RS-422/RS-485
n019 Acceleration time 1 5.0 Acceleration time in seconds
n020 Deceleration time 1 5.0 Deceleration time in seconds
n151 RS-422/485 communications
timeover detection selection
1 Detect timeouts, detect fatal errors, and the Inverter
decelerates to a stop using deceleration time 1 (default).
n152 RS-422/485 communications
frequency reference/display
unit selection
1 Select the unit for communications of frequency
references and frequency monitoring data. Unit: 0.01Hz
(default).
n153 RS-422/485 communications
Slave address
1 Slave address (unit number), unit number 1
n154 RS-422/485 communications
baud rate selection
2 Communications baud rate: 9,600 bps (default)
n155 RS-422/485 communications
parity selection
0 Even parity
n156 RS-422/485 communications
send wait time
10 Sets the response wait time for request messages
received from the master. 10 ms (default).
n157 RS-422/485 communications
RTS control selection
0 RTS control enabled (default)
(Back)
CPU Unit connector
DIP switch for operation settings
To Next Page
Loading...
