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Communication parameters
2
FUNCTIONS
2.15.1 Communication settings (n1 to n7 , n11 )
Communication-related parameters
• The parameter numbers within parentheses are those for use of the parameter unit
(FR-PU04).
• Refer to page 206 for the instruction codes.
Communication specifications
Parameter Name
Factory
Setting
Setting
Range
Remarks
Reflection
Timing
n1(331) Communication station number 0 0 to 31
Setting is enabled
when Pr. 30 = "1"
After reset
n2(332) Communication speed 192 48,96,192 After reset
n3(333) Stop bit length 1 0,1,10,11 After reset
n4(334) Parity check presence/ absence 2 0,1,2 After reset
n5(335)
Number of communication
retries
1
0 to 10,
- - -
Immediately
n6(336)
Communication check time
interval (*)
0s
0, 0.1 to
999s, - - -
Immediately
n7(337) Waiting time setting ---
0 to
150ms,
- - -
After reset
n11(341) CR/LF selection 1 0,1,2 After reset
POINTS
*
When making RS-485 communication, set any value other than 0 in the
communication parameter n6 "communication check time interval". RS-485
communication is disabled if n6 remains unchanged from the factory setting "0s".
Item Computer
Conforming standard EIA-485 (RS-485)
Number of inverters
connected
1:N (max. 32 inverters)
Communication speed Selected between 19200, 9600 and 4800bps
Control protocol Asynchronous
Communication method Half-duplex
Communication
specifications
Character system ASCII (7 bits/8 bits) selectable
Stop bit length Selectable between 1 bit and 2 bits.
Terminator CR/LF (presence/absence selectable)
Check
system
Parity check Selectable between presence (even/odd) and absence
Sum check Presence
Waiting time setting Selectable between presence and absence
REMARKS
•For computer link operation, set 65535 (HFFFF) as the value "- - -" and 65520 (HFFF0) as
the Pr. 19 value "888".
•Refer to page 48 for handling the RS-485 connector.
•For parameter instruction codes, refer to the appended parameter instruction code list (page
206).