Manuals > Device Connection Guide > Hitachi > Connection Procedure (RS-232C)

About the connection example

Please see below for an example of connection settings for this driver.

Applicable models etc.

explanation

This is an example of connection settings via RS-232C with the HIDIC-2aH series.

Device List

The compatible devices are as follows (see here for how to view the device list).

device	keyword	Start address	explanation	unit	reading	Writing
Address specification (16-bit units)	AW	060000	Hexadecimal	word	○	●
Address specification (32-bit units)	AD	060000	Hexadecimal	Double Word	○	●
External Input	X	000	Hexadecimal	bit	○	○
Transfer Register	J	000	Hexadecimal	bit	○	○
External Output	Y	000	Hexadecimal	bit	○	○
Receive Register	Q	000	Hexadecimal	bit	○	○
Global Link Register	G	000	Hexadecimal	bit	○	○
Internal Registers	R	000	Hexadecimal	bit	○	○
Extended Internal Registers	M	000	Hexadecimal	bit	○	○
Keep Relay	K	000	Hexadecimal	bit	○	○
On-delay timer (contact)	TK	000	Hexadecimal	bit	○	○
On-delay timer (coil)	T	000	Hexadecimal	bit	○	○
One-shot timer (contact)	UK	000	Hexadecimal	bit	○	○
One-shot timer (coil)	U	000	Hexadecimal	bit	○	○
Counter (up coil)	CU	00	Hexadecimal	bit	○	○
Counter (down coil)	CD	00	Hexadecimal	bit	○	○
Counter (contact)	C	000	Hexadecimal	bit	○	○
Counter (reset coil)	CR	00	Hexadecimal	bit	○	○
Nesting coil (contact)	N	000	Hexadecimal	bit	○	○
Process Coil	P	000	Hexadecimal	bit	○	○
Edge Contacts	V	000	Hexadecimal	bit	○	○
Event Register	E	000	Hexadecimal	bit	○	○
Z Register	Z	000	Hexadecimal	bit	○	○
System Registers	S	000	Hexadecimal	bit	○	○
External Input	XW	000	Hexadecimal	word	○	●
Transfer Register	JW	000	Hexadecimal	word	○	●
External Output	YW	000	Hexadecimal	word	○	●
Receive Register	QW	000	Hexadecimal	word	○	●
Global Link Register	GW	000	Hexadecimal	word	○	●
Internal Registers	RW	000	Hexadecimal	word	○	●
Extended Internal Registers	MW	000	Hexadecimal	word	○	●
Keep Relay	KW	000	Hexadecimal	word	○	●
On-delay timer	TW	000	Hexadecimal	word	○	●
One Shot Timer	UW	000	Hexadecimal	word	○	●
Up/down counter	CW	000	Hexadecimal	word	○	●
Nesting coil	NW	000	Hexadecimal	word	○	●
Process Coil	PW	000	Hexadecimal	word	○	●
Edge Contacts	VW	000	Hexadecimal	word	○	●
Event Register	EW	000	Hexadecimal	word	○	●
Z Coil	ZW	000	Hexadecimal	word	○	●
System Registers	SW	000	Hexadecimal	word	○	●
Work Register	FW	000	Hexadecimal	word	○	●
Long word register (32 bits)	BD	000	Hexadecimal	Double Word	○	●
Extended external input	IW	000	Hexadecimal	word	○	●
Extended external output	OW	000	Hexadecimal	word	○	●
Data Register	DW	000	Hexadecimal	word	○	●
On-delay timer (setting value)	TS	000	Hexadecimal	word	○	●
One-shot timer (setting value)	US	000	Hexadecimal	word	○	●
Counter (setting value)	CS	000	Hexadecimal	word	○	●
On-delay timer (count value)	TC	000	Hexadecimal	word	○	●
One-shot timer (count value)	UC	000	Hexadecimal	word	○	●
Counter (count value)	CC	000	Hexadecimal	word	○	●
External input (32bit)	XL	000	Hexadecimal	Double Word	○	●
External output (32bit)	YL	000	Hexadecimal	Double Word	○	●
Internal register (32bit)	RL	000	Hexadecimal	Double Word	○	●
Extended internal register (32bit)	ML	000	Hexadecimal	Double Word	○	●
Data register (32bit)	DL	000	Hexadecimal	Double Word	○	●
Work register (32bit)	FL	000	Hexadecimal	Double Word	○	●
Extended external input (32bit)	IL	000	Hexadecimal	Double Word	○	●
Extended external output (32bit)	OL	000	Hexadecimal	Double Word	○	●

When specifying an address, please take note of the following:

Use "AW" when accessing in word units with absolute addressing. Specify the address as an even number (multiple of 2).

example)

Address AW061000 → DW000

Address AW061002 → DW001

Address AW061004 → DW002

Use "AD" when accessing in double-word units with absolute addressing.

Please specify the address in multiples of 4.

example)

Address AD061000 → DW000 to DW001 are interpreted as long words

Address AD061004 → DW002-DW003 are interpreted as long words

Address AD061008 → DW004 to DW005 are interpreted as long words

Long word devices (such as "XL", "YL", and "RL") are not defined in the PLC itself, but are virtually defined for the purpose of handling devices in long word units.

These are equivalent to "BW", "XW" and "YW" respectively, but handle values in 32-bit units. Addresses are specified as even numbers (multiples of 2).

Absolute addressing does not allow access to addresses earlier than 060000.

We cannot guarantee the operation of the PLC if accessed.

For devices that require addresses to be specified in multiples of 2 or 4, do not specify any other addresses.

HIDIC-S10/2α/mini CPU equivalent to attached port

HIDIC-S10/2α/mini CPU equivalent to attached port