Instructions - Mitsubishi Electric FR-A5NR Instruction Manual

COMPUTER LINK FUNCTION

4.10 Instructions

(1) Programming instructions
1) The inverter does not accept data from the computer if it has an error. For this reason, a retry program
for data error must be included in the user program.
2) A request for any data communication, e.g. operation command, monitoring, is always given by the
computer and the inverter will return data to the computer. Hence, the program should be written to
give a data read request as required from the computer at the time of monitoring, etc.
3) Data for link parameter expansion setting differs as indicated below depending on the parameter num-
ber (For details, refer to the Inverter Instruction Manual.):
Link parameter
expansion
setting
(2) Operating instructions
To prevent hazard conditions, the inverter is designed to be inoperative when the inverter's per-
missible communication time interval is not set. Therefore, always set the permissible communi-
cation time interval before starting operation.
Data communication is not started automatically but is made only once when the computer
provides a communication request. If communication is disabled during operation due to sig-
nal cable breakage etc., the inverter cannot be stopped. When the permissible communica-
tion time interval has elapsed, the inverter will come to an alarm stop (E.OP1 to E.OP3).
The inverter can be coasted to a stop by shorting the inverter terminals RES-SD or by switch-
ing power off.
Instruction
Code
(Example: F-A500 series)
Read H7F
H00:Pr.0 to Pr.96
H01:Pr.100 to Pr.158, Pr.900 to Pr.905
H02:Pr.160 to Pr.287
Write HFF
H09:Pr.990
CAUTION
35
Data