TAMAGAWA TS2151N11E45 TS2151N11E45 TS2151N11E45 TS2151N11E45 TS2151N11E45

TS2151N11E45

TS3664N1E2

TS3664N2E3

TS3664N2E4

TS3664N50

TS3664N50

TS3667N1E2

TS3667N11E2

TS3667N2E5

TS3667N2E6

TS3667N3E7

TS3667N3E8

TS3667N13E8

TS3674N37

TS3679N2E1

TS3679N3E1

TS3682N1

TS3682N2

TS3684N11E3

TS3684N12E6

TS3684N13E8

TS3684N1E3

TS3684N2E6

for FB and FC code blocks. You can select a pointer data type from the block interface data
type drop-lists.
The Variant data type is also used for instruction parameters. The data type Pointer points to a particular variable. It occupies 6 bytes (48 bits) in memory
and can include the following information:
● DB number or 0 if the data is not stored in a DB
● Storage area in the CPU
● Variable address Depending on the instruction, you can declare the following three types of pointers:
● Area-internal pointer: contains data on the address of a variable
● Area-crossing pointer: contains data on the memory area and the address of a variable
● DB-pointer: contains a data block number and the address of a variable The pointer data type ANY ("Any") points to the beginning of a data area and specifies its
length. The ANY pointer uses 10 bytes in memory and can include the following information:
● Data type: Data type of the data elements
● Repeat factor: Number of data elements
● DB Number: Data block in which data elements are stored
● Storage area: Memory area of the CPU, in which the data elements are stored
● Start address: "Byte.Bit" starting address of the data
The following image shows the structure of the ANY pointer: A pointer can not detect ANY structures. It can only be assigned to local variables.
Table 4- 28 Format and examples of the ANY pointer:
The data type Variant is can point to variables of different data types or parameters. The
Variant pointer can point to structures and individual structural components. The Variant
pointer does not occupy any space in memory. PLC tags and data block tags can be accessed at the bit, byte, or word level depending on
their size. The syntax for accessing such a data slice is as follows:
● "<PLC tag name>".xn (bit access)
● "<PLC tag name>".bn (byte access)
● "<PLC tag name>".wn (word access)
● "<Data block name>".<tag name>.xn (bit access)
● "<Data block name>".<tag name>.bn (byte access)
● "<Data block name>".<tag name>.wn (word access)
A double word-sized tag can be accessed by bits 0 - 31, bytes 0 - 3, or word 0 - 1. A wordsized
tag can be accessed by bits 0 - 15, bytes 0 - 2, or word 0. A byte-sized tag can be
accessed by bits 0 - 8, or byte 0. Bit, byte, and word slices can be used anywhere that bits,
bytes, or words are expected operandsValid data types that can be accessed by slice are Byte, Char, Conn_Any, Date, DInt,
DWord, Event_Any, Event_Att, Hw_Any, Hw_Device, HW_Interface, Hw_Io, Hw_Pwm,
Hw_SubModule, Int, OB_Any, OB_Att, OB_Cyclic, OB_Delay, OB_WHINT, OB_PCYCLE,
OB_STARTUP, OB_TIMEERROR, OB_Tod, Port, Rtm, SInt, Time, Time_Of_Day, UDInt,
UInt, USInt, and Word. PLC Tags of type Real can be accessed by slice, but data block tags
of type Real cannot.In the PLC tag table, "DW" is a declared tag of type DWORD. The examples show bit, byte,
and word slice access:
The AT tag overlay allows you to access an already-declared tag of a standard access block
with an overlaid declaration of a different data type. You can, for example, address the
individual bits of a tag of a Byte, Word, or DWord data type with an Array of Bool.
Declaration
To overlay a parameter, declare an additional parameter directly after the parameter that is
to be overlaid and select the data type "AT". The editor creates the overlay, and you can
then choose the data type, struct, or array that you wish to use for the overlayThis example shows the input parameters of a standard-access FB. The byte tag B1 is
overlaid with an array of Booleans: Overlaying of tags is only possible in FB and FC blocks with standard access.
● You can overlay parameters for all block types and all declaration sections. ● An overlaid parameter can be used like any other block parameter.
● You cannot overlay parameters of type VARIANT.