Mitsubishi Electronics FR-S500 instruction manual 133

Communication parameters

<Setting>

To make communication between the personal computer and inverter, initialization of the communication specifications must be made to the inverter. If initial setting is not made or there is a setting fault, data transfer cannot be made.

*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	Setting		Description
	Communication			Station number specified for communication from
n1		0 to 31		the RS-485 connector.
	station number			Set the inverter station numbers when two or more
				inverters are connected to one personal computer.
	Communication	48		4800bps
n2		96		9600bps
	speed
		192		19200bps
		8 bits	0	Stop bit length 1 bit
n3	Stop bit length/		1	Stop bit length 2 bits
	data length
		7 bits	10	Stop bit length 1 bit
			11	Stop bit length 2 bits
	Parity check	0		Absent
n4	presence/	1		Odd parity present
	absence	2		Even parity present
				Set the permissible number of retries at occurrence
				of a data receive error.
		0 to 10		If the number of consecutive errors exceeds the
				permissible value, the inverter will come to an alarm
	Number of			stop (OPT).
				If a communication error occurs, the inverter will not
n5	communication
				come to an alarm stop. At this time, the inverter can
	retries
		---		be coasted to a stop by MRS or RES input.
				During a communication error (H0 to H5), the minor
		(65535)
				fault signal (LF) is switched on. Allocate the used
				terminal with any of Pr. 64, Pr. 65 (output terminal
				function selection).
		0		No communication
	Communication			Set the communication check time [s] interval.
				If a no-communication state persists for longer than
n6	check time	0.1 to 999
				the permissible time, the inverter will come to an
	interval			alarm stop (OPT).
		---		Communication check suspension.
	Waiting time	0 to 150		Set the waiting time between data transmission to
n7				the inverter and response.
	setting
		---		Set with communication data.
n11	CR/LF selection	0		Without CR/LF
		1		With CR, without LF
		2		With CR/LF

2

FUNCTIONS

133