MGI M4000E series, Instruction Manual

Page: 134 / 215

123
4
PARAMETERS
* When making communication, set any value other than 0 in Pr. 122 "communication
check time interval".
<Setting>
To make communication between the personal computer and inverter, the
communication specifications must be set to the inverter initially. If initial setting is not
made or there is a setting fault, data transfer cannot be made.
Note: After making the initial setting of the parameters, always reset the inverter. After
you have changed the communication-related parameters, communication
cannot be made until the inverter is reset.
Parameter Number Factory Setting Setting Range
117 0 0 to 31
118 192 48, 96, 192
119 1
Data length 8 0, 1
Data length 7 10, 11
120 2 0, 1, 2
121 1 0 to 10, 9999
122* 9999 0, 0.1 to 999.8 s, 9999
123 9999 0 to 150, 9999
124 1 0, 1, 2
342 0 0, 1
Parameter
Number
Name Setting Description
117
Communication
station number
0 to 31
Station number specified for communication from the
PU connector.
Set the inverter station numbers when two or more
inverters are connected to one personal computer.
118
Communication
speed
48 4800bps
96 9600bps
192 19200bps
119 Stop bit length
8 bits
0 Stop bit length 1 bit
1 Stop bit length 2 bits
7 bits
10 Stop bit length 1 bit
11 Stop bit length 2 bits
120
Parity check
presence/
absence 0 Absent
1 Odd parity present
2 Even parity present
121
Number of
communication
retries
0 to 10
Set the permissible number of retries at occurrence of
a data receive error.
If the number of consecutive errors exceeds the
permissible value, the inverter will come to an alarm
stop.
9999
(65535)
If a communication error occurs, the inverter will not
come to an alarm stop. At this time, the inverter can be
coasted to a stop by MRS or RES input.
During a communication error (H0 to H5), the minor fault
signal (LF) is switched on. Allocate the used terminal
with any of Pr. 190 to Pr. 192 (multi-function outputs).
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