Yaskawa YASNAC PC NC PLC Programming Manual - Manual (Page 25)

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YASNAC PCNC PLC Programming Manual Chapter 5: Address Numbers And Map
5.1 PLC Address
When creating a sequence program, input/output signals of PLC, internal relays, timers, battery
back-up memory and other devices in the PLC are designated by an address number (four-digit
number following #) and a bit number (bit 0 to bit 7).
(1) Designation of I/O Signals, Internal Relays, and Other Devices (One-bit Device)
The devices which have one-bit information are designated by a five digit number (address
number + bit number) following “#” as indicated below.
In this case, the address number has the same meaning as a) explained above, and it can be
considered to be the name assigned collectively to eight points of a signal.
(2) Designation of the Registers, Timers and Other Devices (One-byte Devices)
The devices which have one-byte (eight bits) information are designated by the address
number following “#”. The address number is the name assigned to one-byte data.
Note: With some types of instructions, designation of “#1500”, for example,
specifies two bytes of “#1500” and “#1501”.
Example: PUSH#1500
Device Designation
I/O signals
Internal relays
Keep relays
Device Designation
Registers
Timers
Sequencer parameters
Keep memory