Hitachi L2002 - Manual (Page 239)

L200
2
Inverter
Appendix B
B–3
Connecting the Inverter to ModBus
Follow the steps in this section to connect the inverter to the ModBus network.
1. Open Serial Port Cover - The inverter keypad has a hinged dust cover protecting the
serial port connector. Lift the cover from the bottom edge, and tilt upward as shown
(below left).
2. Modular Interconnect Removal - With the serial port cover opened, notice the RJ45
modular connector behind it. Connect the serial cable and engage the locking tab in
the connector as shown (below right).
3. Cable Wiring - The inverter communications
port uses RS485 differential transceiver. The
pinout is shown to the right and listed below. Be
sure the cable connection you make matches the
diagram.
Pin Symbol Description
1 — Not used. Do not connect
2 — Not used. Do not connect
3 — Not used. Do not connect
4 — Not used. Do not connect
5 SP Send/Receive data Positive
6 SN Send/Receive data Negative
7 — Not used. Do not connect
8 — Not used. Do not connect
RJ45 modular
communications
connector
Dust
cover
Serial cable with RJ45 end
L200 2
1 2
RUN STOP RESET
FUNC. STR
HITACHI POWER
ALARM
RUN
A
Hz
PRG
5 0.0
S
N
1
S
P
2 3 4 5 6 7 8
Not used Not used