TIA Datatypes
List of data types used by Simatic S7. The page contains the more modern TIA variable types as well as the earlier S7-classic types.
There are four data types in: Boolean, Text, Numeric, and Date/Time. Each data type defines the format of information that can be entered into a data field and stored in your database.
| Datatyp | Width (bits) | Range of values | Examples | S7-300/400 | S7-1200 | S7-1500 |
|---|---|---|---|---|---|---|
| Binaries | ||||||
| BOOL (x) →details | 1 (S7-1500 optimized 1 Byte) | FALSE or TRUE BOOL#0 or BOOL#1 BOOL#FALSE oder BOOL#TRUE | TRUE BOOL#1 BOOL#TRUE | X | X | X |
| BYTE (b) →details | 8 | B#16#00 .. B#16#FF 0 .. 255 2#0 .. 2#11111111 | 15, BYTE#15, B#15 | X | X | X |
| WORD (w) →details | 16 | W#16#0000 .. W#16#FFFF 0 .. 65.535 B#(0, 0) .. B#(255, 255) | 55555, WORD#55555, W#555555 | X | X | X |
| DWORD (dw) →details | 32 | DW#16#0000 0000 .. DW#16#FFFF FFFF 0 .. 4,294,967,295 | DW#16#DEAD BEEF B#(111, 222, 255, 200) | X | X | X |
| LWORD (lw) →details | 64 | LW#16#0000 0000 0000 0000 .. LW#16#FFFF FFFF FFFF FFFF 0 .. 18.446.744.073.709.551.615 | LW#16#DEAD BEEF DEAD BEEF B#(111, 222, 255, 200, 111, 222, 255, 200) | - | - | X |
| Datatyp | Width (bits) | Range of values | Examples | S7-300/400 | S7-1200 | S7-1500 |
| Integers | ||||||
| SINT (si) →details | 8 | -128 .. 127 (hex only positive) 16#0 .. 16#7F | +42, SINT#+42 16#1A, SINT#16#2A | - | X | X |
| INT (i) →details | 16 | -32.768 .. 32.767 (hex only positive) 16#0 .. 16#7FFF | +1234, INT#+3221 16#1ABC | X | X | X |
| DINT (di) →details | 32 | -2.147.483.648 .. +2.147.483.647 (hex only positive) 16#00000000 .. 16#7FFFFFFF | 123456, DINT#123.456, 16#1ABC BEEF | X | X | X |
| USINT (usi) →details | 8 | 0 .. 255 16#00 .. 16#FF | 42, USINT#42 16#FF | - | X | X |
| UINT (ui) →details | 16 | 0 .. 65.535 16#0000 .. 16#FFFF | 12.345, UINT#12345 16#BEEF | - | X | X |
| UDINT (udi) →details | 32 | 0 .. 4.294.967.295 16#00000000 .. 16#FFFF FFFF | 1.234.567.890, UDINT#1234567890 | - | X | X |
| LINT (li) →details | 64 | -9.223.372.036.854.775.808 .. +9.223.372.036.854.775.807 | +1.234.567.890.123.456.789, LINT#+1.234.567.890.123.456.789 | - | - | X |
| ULINT (uli) →details | 64 | 0 .. 18.446.744.073.709.551.615 | 123.456.789.012.345, ULINT#123.456.789.012.345 | - | - | X |
| Datatyp | Width (bits) | Range of values | Examples | S7-300/400 | S7-1200 | S7-1500 |
| floating point numbers | ||||||
| REAL ® →details | 32 | -3.402823e+38 .. -1.175 495e-38 .. +1.175 495e-38 .. +3.402823e+38 | 0.0, REAL#0.0 1.0e-13, REAL#1.0e-13 | X | X | X |
| LREAL (lr) →details | 64 | -1.7976931348623158e+308 .. -2.2250738585072014e-308 .. +2.2250738585072014e-308 .. +1.7976931348623158e+308 | 0.0, LREAL#0.0 | - | X | X |
| Datatyp | Width (bits) | Range of values | Examples | S7-300/400 | S7-1200 | S7-1500 |
| Times | ||||||
| S5TIME (s5t) →details | 16 | S5T#0H_0M_0S_0MS .. S5T#2H_46M_30S_0MS | S5T#10s, S5TIME#10s | X | - | X |
| TIME (t) →details | 32 | T#-24d20h31m23s648ms .. T#+24d20h31m23s647ms | T#13d14h15m16s630ms, TIME#1d2h3m4s5ms | X | X | X |
| LTIME (lt) →details | 64 | LT#-106751d23h47m16s854ms775us808ns .. LT#+106751d23h47m16s854ms775us807ns | LT#1000d10h15m24s130ms152us15ns, LTIME#200d2h2m1s8ms652us315ns | - | - | X |
| Timer operations: IEC timers, TON (Generate on-delay), TOF (Generate off-delay), TP (Generate pulse), TONR (Time accumulator) | ||||||
| Datatyp | Width (bits) | Range of values | Examples | S7-300/400 | S7-1200 | S7-1500 |
| Counters | ||||||
| CHAR →details | 8 | ASCII character set | 'A', CHAR#'A' | X | X | X |
| WCHAR (wc) →details | 16 | Unicode character set | WCHAR#'A' | - | X | X |
| STRING (s) →details | n+2 (Byte) | 0 .. 254 characters (n) | 'Name', STRING#'lamaPLC' | X | X | X |
| WSTRING (ws) →details | n+2 (Word) | 0 .. 16382 characters (n) | WSTRING#'lamaPLC' | - | X | X |
| Counter operations: CTU (count up), CTD (count down), CTUD (count up and down) | ||||||
| Datatyp | Width (bits) | Range of values | Examples | S7-300/400 | S7-1200 | S7-1500 |
| Date & time | ||||||
| DATE (d) →details | 16 | D#1990-01-01 .. D#2168-12-31 | D#2020-08-14, DATE#2020-08-14 | X | X | X |
| TOD (tod) (TIME_OF_DAY) →details | 32 | TOD#00:00:00.000 .. TOD#23:59:59.999 | TOD#11:22:33.444, TIME_OF_DAY#11:22:33.444 | X | X | X |
| LTOD (ltod) (LTIME_OF_DAY) →details | 64 | LTOD#00:00:00.000000000 .. LTOD#23:59:59.999999999 | LTOD#11:22:33.444_555_111, LTIME_OF_DAY#11:22:33.444_555_111 | - | - | X |
| DT (dt) (DATE_AND_TIME) →details | 64 | Min.: DT#1990-01-01-0:0:0 Max.: DT#2089-12-31-23:59:59.999 | DT#2020-08-14-2:44:33.111, DATE_AND_TIME#2020-08-14-11:22:33.444 | X | - | X |
| LDT (ldt) (L_DATE_AND_TIME) →details | 64 | Min.: LDT#1970-01-01-0:0:0.000000000, 16#0 Max.: LDT#2262-04-11-23:47:16.854775807, 16#7FFF_FFFF_FFFF_FFFF | LDT#2020-08-14-1:2:3.4 | - | - | X |
| DTL (dtl) →details | 96 | Min.: DTL#1970-01-01-00:00:00.0 Max.: DTL#2554-12-31-23:59:59.999999999 | DTL#2020-08-14-10:12:13.23 | - | X | X |
| Datatyp | Width (bits) | Range of values | Examples | S7-300/400 | S7-1200 | S7-1500 |
| Pointers | ||||||
| POINTER (p) →details | 48 | Symbolic: “DB”.“Tag” Absolute: P#10.0 P#DB4.DBX3.2 | X | - | X | |
| ANY (any) →details | 80 | Symbolic: “DB”.StructVariable.firstComponent Absolut: P#DB11.DBX12.0 INT 3 P#M20.0 BYTE 10 | X | - | X | |
| VARIANT (var) →details | 0 | Symbolic: “Data_TIA_Portal”. StructVariable.firstComponent Absolute: %MW10 P#DB10.DBX10.0 INT 12 | - | X | X | |
| BLOCK_FB | 0 | - | X | - | X | |
| BLOCK_FC | 0 | - | X | - | X | |
| BLOCK_DB | 0 | - | X | - | - | |
| BLOCK_SDB | 0 | - | X | - | - | |
| VOID | 0 | - | X | X | X | |
| PLC_DATA_TYPE | 0 | - | X | X | X | |