FX Series Programmable Controlers Applied Instructions 5
5-194
5.16.1.1.3 Inverter settings and PLC communication settings
Inverter communication specification and application to PLC
Note:
Some of the specifications above are fixed in the PLC but variable in the inverter. This has
been done to ease set up and reduce any possible problems during configuration.
For more information on the inverter, please see the appropriate inverter manual.
Inverter specifications Application to PLC
Transmission standard RS-485 RS-485
Number of connected units 1:N (8 units maximum) 1:N (8 units maximum)
Communication speed
19200, 9600 or 4800 bps
(selectable)
19200, 9600 or 4800 bps
(selectable)
Control procedure Asynchronous system Asynchronous system
Communication method Half duplex Half duplex
Communication
specifications
Character type ASCII (7 or 8 bits) (selectable) Fixed to 7 bits
Stop bit length 1 or 2 bits (selectable) Fixed to 1 bit
Terminator
CR/LF (absence/presence select-
able)
Fixed to CR only
Check
method
Parity
check
/
Fixed (even), fixed (odd) or not
fixed (selectable)
Fixedtoevenparity
Sum check Fixed Fixed
Waiting time setting Set by customer Set by communication data