Mitsubishi FR-A500 Series Instruction Manual page 133

! For the data codes of the parameters, refer to the data code list in the appendices.
REMARKS
For computer link operation, set the value "8888" as 65520 (HFFF0) and the value "9999" as 65535
(HFFFF).
Parameter Number
117
118
119
120
121
122*
123
124
342
* 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
Description
Number
Station
117
number
Communi-
118
cation
speed
Stop bit
119
length/data
length
Parity check
120
presence/
absence
Number of
121
communica-
tion retries
Communi-
cation
122
check time
interval
Waiting
123
time setting
CR • LF
presence/
124
absence
selection
2
E PROM
342*
write
selection
* 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
2
previously in E PROM.
When changing parameter values frequently, set "1" in Pr. 342 to choose write to RAM.
2
The Pr. 342 " E PROM write selection" setting is also valid when the communication option is fitted.
Factory Setting Setting Range
0
192
Data length 8
1
Data length 7
2
1
0 <9999> 0, 0.1 to 999.8s, 9999
9999 0 to 150ms, 9999
1
0
Setting
Station number specified for communication from the PU connector.
0 to 31 Set the inverter station numbers when two or more inverters are connected to one
personal computer.
48 4800 bps
96 9600 bps
192 19200 bps
0 Stop bit length 1 bit
8 bits
1 Stop bit length 2 bits
10 Stop bit length 1 bit
7 bits
11 Stop bit length 2 bits
0 Absent
1 Odd parity present
2 Even parity present
Set the permissible number of retries at occurrence of data receive error. If the
0 to 10 number of consecutive errors exceeds the permissible value, the inverter will come
to an alarm stop.
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.
9999
During a communication error (H0 to H5), the minor fault signal (LF) is switched
(65535)
on. Allocate the used terminal with any of Pr. 190 to Pr. 195 (output terminal
function selection).
0 No communication
0.1 to 999.8 Set the communication check time [s] interval.
If a no-communication state persists for longer than the permissible time, the
9999
inverter will come to an alarm stop.
0 to 150ms Set the waiting time between data transmission to the inverter and response.
9999 Set with communication data.
Without CR • LF
0
1 With CR
With CR • LF
2
When parameter write is performed from the computer, parameters are written to
0
2
E PROM.
When parameter write is performed from the computer, parameters are written to
1
RAM.
0 to 31
48, 96, 192
0, 1
10, 11
0, 1, 2
0 to 10, 9999
0, 1, 2
0, 1
Description
120
PARAMETERS