Figure 1. Layout
3.2.
Status LED
CPU LED
Indicates normal operation of the board when blinking once per second.
RXD LED
Receiving 485 signal
TXD LED
Responding to 485 signal
ERR LED
On and Off intermittently
Wrong DATA received (Normal
operating)
Blinking with CPU LED at the same
time
DPRAM communication fault
Blinking with CPU LED in an
opposite way
Network Connection TimeOut <I/O-49>
elapsed
INSTALLATION
1. Connect the option board to the inverter control board using each connector on the board (See the
Figure 1).
modbus-rtu iS5 manual.doc 4