Mitsubishi FR-E 500 - Page 137

PARAMETERS
122
<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 unit the inverter is reset.
Parameter
Number
Definition Setting Description
117
Station
number
0 to 31
Station number s
p
ecified for communication from the
PU connector.
Set the inverter station numbers when two or more
inverters are connected to one personal computer.
48 4800 bps
96 9600 bps118
Communica-
tion speed
192 19200 bps
0
Stop bit length 1 bit
8 data
bits
1
Stop bit length 2 bits
10
Stop bit length 1 bit
119
Stop bit
length
7 bits
11
Stop bit length 2 bits
0
Absent
1
Odd parity present
120
Parity check
presence/
absence
2
Even parity present
0 to 10
Set the
p
ermissible 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.
121
Number of
communication
retries
9999
(65535)
If a communication error occurs, the inverter will not
come to an alarm sto
p
. At this time, the inverter can be
coasted to a stop by MRS or RESET input.
Durin
g
a communication error
(
H0 to H5
)
, the minor
fault si
g
nal
(
LF
)
is switched on. Allocate the used
terminal with an
y
of Pr. 190 to Pr. 192
(
multi-function
outputs).
0 No communication
0.1 to
999.8
Set the communication check time [seconds] interval.
If a no-communication state
p
ersists for lon
g
er than the
p
ermissible time, the inverter will come to an alarm sto
p
.
122
Communica-
tion check
time interval
9999 Communication check suspension
0 to 150
Set the waitin
g
time between data transmission to the
inverter and response.
123
Waiting time
setting
9999 Set with communication data.
0 Without CR/LF
1 With CR, without LF124
CR
⋅
LF
instruction
presence/
absence
2 With CR/LF
0
When parameter write is performed from the
computer, parameters are written to E
2
PROM.
342*
(400V
class
only)
E
2
PROM
write
selection
1
When
p
arameter write is
p
erformed from the
computer, parameters are written to RAM.
* When you have set write to RAM, powering off the inverter clears the parameter
values that have been changed. Therefore the parameter values available when
power is switched on again are those stored previously in E
2
PROM.
When the parameter values will be changed frequently, set "1" in Pr. 342 to choose
write to RAM.
4