Panasonic FP2 ET-LAN Technical Manual page 233

How data is notated in commands and responses
Data used in commands and responses can be notated in the three ways described below.
Hexadecimal data
0 1
X16 and 16 to indicate hexadecimal data.
(Example) Register contents in a data area read (RD) response
Decimal data
0 1
X10 and x10 to indicate decimal data.
(Example) Initial word contents in a data area read (RD) command
Decimal – hexadecimal data
In the relay numbers for external input (X), external output (Y), internal relays (R), and link relays (L), the
last digit is in hexadecimal notation, while the preceding digits are in decimal notation. (In T/C contact
numbers, all of the digits, including the last digit, are in decimal notation.)
In this case, the notation would read as follows:
0 1 2
X16 , x10 , x10 to
(Example) Specification of command contact of contact area lead (RCS)
Note:
Data is limited to a certain number of characters. For example, the contact number above is specified
using four characters, so when the X1F contact area is read, a 0 will be added at the beginning to fill out
the number of characters and form a four-character string.
14-5