Manual > Device Connection Guide > Common Items

How to view the device list

The description page for each model contains a "Device List" like the one below.

Example) XXX manufacturer XXX model
device	keyword	Start address	explanation	unit	reading	Writing
Input Relay	X	000000	Hexadecimal	bit	○	○
Output Relay	Y	000000	Hexadecimal	bit	○	○
Internal Relay	M	000000	Decimal	bit	○	○
Data Register	D	000000	Decimal	word	○	●
Extended File Register (Block)	R	0000000	Decimal number 3 digits (block number) + 4 digits (0 to 8191)	word	○	●

▪device
Description of the device.

▪keyword
The name at the beginning of the device. Usually, a device name and address are combined to represent one device.

▪Start address
The first address of the device. For example, if it is "9000", you can specify an address starting from "9000".

▪explanation
Description of how to specify an address.
Octal, 10, or 16 means that the address is expressed in that base. Octal numbers are expressed with 0-7, decimal numbers are expressed with 0-9, and hexadecimal numbers are expressed with 0-F.

[Example 1] In the case of "3-digit decimal number (block number) + 4-digit number (0 to 8191)"
All numbers are expressed in decimal, the first three digits represent the block number, the remaining four digits are a number in the range of 0 to 8191.
For example, if the block number is 3 and the last four digits of the address are "100", you would specify it as "0030100".

[Example 2] "2 digit hexadecimal number + 3 digit octal number"
The first two digits are expressed in hexadecimal, and the last three digits are expressed in octal. For example, specify "FF777".

▪unit
is the unit of device. There are bit device, byte device and word device.

▪Read/Write
This indicates whether you can "read" or "write" to the device.
"○" indicates possible and "×" indicates impossible.
"●" indicates a device that can be written to, but requires caution when writing bit-by-bit. For details, see "Precautions when writing".