Mitsubishi Electric FR-S520E Series Instruction Manual page 157

(2) Communication operation presence/absence and data format types
Communication operation presence/absence and data format types are as follows:
No. Operation
Communication request
is sent to the inverter in
1) accordance with the
user program in the
computer.
Inverter data processing
2)
time
No error*
Reply data
(Request
from the
accepted)
inverter.(Da
3)
ta 1) is
With error
checked for
(request
error)
rejected)
Computer processing
4)
delay time
Answer No error*
from (No inverter
computer in processing)
response to
5)
With error.
reply data
(Inverter
3). (Data 3)
outputs 3)
is checked
again.)
for error)
* In the communication request data from the computer to the inverter, 10ms or
more is also required after "no data error (ACK)". (Refer to page 150.)
REMARKS
*1. Setting any of "0.1" to "999" in Pr. 37 "speed display" and "1" in instruction code "HFF" sets
the data format to A" or E" (6-digit data). Also, the output frequency turns to a speed
display, which is valid in 0.01r/min increments. (The third decimal place is invalid.) If the
instruction code "HFF" is other than "1", the display is in 1r/min increments and a 4-digit
data format can be used. Reply data is given in format E if the requested monitor data has
4 digits, in format E' if the data has 2 digits, or in format E" if the data has 6 digits.
*2. The data format to read/write Pr. 37 "speed display" is always E"/A" (6-digit data).
Run Running
Command Frequency
A' A (A")*1
Present Present
C C
D D
Absent Absent
Absent Absent
Absent Absent
147
Communication parameters
Parameter Inverter
Write Reset
A (A")*2 A
Present Absent
C Absent
D Absent
Absent Absent
Absent Absent
Absent Absent
Monitor- Parame-
ing ter Read
B B
Present Present
E, E' E
(E")*1 (E")*2
F F
Absent Absent
G G
(Absent) (Absent)
H H
2