Hitachi NJI-350B - Manual (Page 35)

Chapter 4 Product lineup and wiring
4-3
4.2 10-Point Basic Unit
Name and function of each part Type EH-D10DT, EH-D10DTP, EH-
D10DR
1] POW LED
2] OK LED
3] RUN LED
4] Serial port
5] RUN input
9] Mounting hole
8] Power terminal
7] Output terminals
10] DIN rail installation clip
6] Input terminals
No. Item Detailed explanation Remarks
Explanation of operation Operations are performed according to the contents of the program created
by the user.
The programming unit connected to the CPU module communication port
writes and reads the user programs.
Memory is installed inside the CPU module in which the user programs and
internal output information are stored.
1] POW LED Lighting when the power is supplied.
2] OK LED Lighting at normal operation. See Chapter 12.
3] RUN LED Lighting at RUN status.
4] Serial port 1 Serial port for connecting the peripheral units. Communication speed is
fixed as 4800 bps.
The communication specification is set to port 1. See Chapter 11.
5] RUN input External input to control the PLC’s RUN/STOP.
When 24 V DC is loaded to the RUN terminal and common terminal (C),
the PLC is set to the RUN state. See Chapter 10.
6] Input terminals Terminals for wiring the external input units.
One piece of AWG14 to AWG22 (2.1 to 0.36 mm
2 ) or two pieces of
AWG16 to AWG22 (1.3 to 0.36 mm 2 ) per terminal may be wired.
See Chapter 10.
7] Output terminals Terminals for connecting the external load. The wiring specification is the
same as for the input terminals. See Chapter 10.
8] Power terminal Terminal for connecting the power supply. The wiring specification is the
same as for the input terminals. See Chapter 10.
9] Mounting hole Used when installing the PLC directly on a board with screws See Chapter 10.
10] DIN rail
installation clip Used when installing the PLC on a DIN rail See Chapter 10.