Instruction Manual

94
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Setting necessary parameters for communication
Communication related parameters must be set for PLC communication. parameters
n151 to n157 cannot be set during communication. Always set them prior to
performing communication.
* The slave does not respond to the command from the master when set to 0.
Monitoring run status from the PLC, setting/referencing of parameters, fault reset and
multi-function input reference can be done regardless of run command or frequency
reference selection.
Multi-function input reference from PLC becomes OR with input commands from S1
to S7 multi-function input terminals.
Parameter Name Description
Initial
Setting
n003 Run command selection
0 : operator
1 : control circuit terminals
2 : communication
3 : communication card (optional)
0
n004
Frequency reference
selection
0 : Local potentiometer (digital operator)
1 : frequency ref. 1 (n024)
2 : control circuit terminals (voltage 0 to 10V)
3 : control circuit terminals (current 4 to 20mA)
4 : control circuit terminals (current 0 to 20mA)
5 : pulse train
6 : MEMOBUS communication (Register No. 000211)
7 : operator circuit terminals (voltage 0 to 10V)
8 : operator circuit terminals (current 4 to 20mA)
9 : communication card (optional)
0
n151
Timeover detection
selection
Monitors transmission time
between the receiving the
correct data from the PLC
(Timeover: 2 sec)
0 : timeover detection (free run stop)
1 : timeover detection (coasting to a stop with speed
reduction time 1)
2 : timeover detection (coasting to a stop with speed
reduction time 2)
3 : timeover detection (continuous operation, warning
display)
4 : timeover detection not provided
0
n152
Communication frequency
Reference monitor unit
selection
0 : 0.1Hz
1 : 0:0.1Hz
2 : 30000/100% (30000 = max. output frequency)
3 : 0.1%
0
n153 Slave address Setting range: 0 to 32* 0
n154 Baud rate selection
0 : 2400 bps
1 : 4800 bps
2 : 9600 bps
3 : 19200 bps
2
n155 Parity selection
0 : even parity
1 : odd parity
2 : no parity
0
n156 Sending waiting time Setting limit: 10 ms to 65 ms setting unit: 1 ms 10 ms
n157 RTS control
0 : RTS control
1 : no RTS control (RS-422A 1 to 1 communication)
0