UBI EasyCoder 201 IIE Manuale delle Istruzioni Pagina 160
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Intermec Fingerprint v7.61 – Programmer’s Reference Manual Ed. 7158
Chapter 2 Program Instructions
LOF
Field of Application
Function returning the length in bytes of an OPEN sequential or
random fi le, or returning the status of the buffers in an OPEN
communication channel.
Syntax LOF(<nexp>)
(<nexp>) is the number assigned to the fi le or communication channel
when it was OPENed.
Remarks
LOF can also be used to check the receive or transmit buffer of the specifi ed
communication channel:
• If a channel is OPENed for INPUT, the remaining free space (bytes) in
the receive buffer is returned.
• If a channel is OPENed for OUTPUT, the remaining number of characters
to be transmitted from the transmit buffer is returned.
Examples
The fi rst example illustrates how the length of the fi le "Pricelist" is
returned:
10 OPEN "PRICELIST" AS #5
20 A%=LOF(5)
30 PRINT A%
. . . .
. . . .
The second example shows how the number of free bytes in the receive buffer
of communication channel "uart2:" is calculated:
100 OPEN "uart2:" FOR INPUT AS #2
110 A%=LOF(2)
120 PRINT A%
- Programmer’s 1
- Reference Manual 1
- Intermec Finger 1
- 1. Introduction 3
- Chapter 1 Introduction 10
- Auxiliary Files in 11
- Intermec Fingerprint 11
- 2. Program Instructions 13
- ACTLEN 15
- ALIGN (AN) 16
- ALIGN (AN), cont 17
- BARADJUST 20
- BARCODENAME$ 21
- BARFONT (BF) 22
- BARFONT (BF), cont 23
- BARFONT ON/OFF (BF ON/OFF) 24
- BARHEIGHT (BH) 25
- BARMAG (BM) 26
- BARRATIO (BR) 27
- BARSET, cont 29
- BARTYPE (BT) 30
- BREAK, cont 33
- BREAK ON/OFF 35
- CHECKSUM 38
- CLEANFEED 40
- CLL, cont 44
- COM ERROR ON/OFF 46
- COMSET, cont 49
- COMSET OFF 50
- COMSET ON 51
- CONT 53
- COUNT& 55
- COUNT&, cont 56
- CSUM 57
- CUT ON/OFF 59
- DATEADD$ 61
- DATEDIFF 62
- DBBREAK OFF 64
- DBSTDIO 66
- DBSTEP 67
- DELETEPFSVAR 69
- DEVICES, cont 71
- DIR, cont 75
- ERROR 81
- ERROR, cont 82
- FILE& LOAD 86
- FILENAME$ 87
- FLOATCALC$ 89
- FONT (FT) 90
- FONT (FT), cont 91
- FONTNAME$ 93
- FOR...TO...NEXT 95
- FORMAT, cont 97
- FORMAT DATE$ 98
- FORMAT INPUT 99
- FORMAT TIME$ 100
- \ use two backslashes 101
- FORMAT$, cont 102
- FORMFEED (FF) 104
- FUNCTEST 106
- FUNCTEST, cont 107
- FUNCTEST$ 108
- FUNCTEST$, cont 109
- GETASSOC$ 111
- GETASSOCNAME$ 112
- GETPFSVAR 113
- GOSUB, cont 115
- HEAD, cont 118
- IF...THEN...(ELSE) 119
- IF...THEN...(ELSE), cont 120
- IMAGE BUFFER SAVE 121
- IMAGE LOAD 122
- IMAGENAME$ 123
- IMMEDIATE 125
- IMMEDIATE, cont 126
- INPUT (IP) 128
- INPUT (IP), cont 129
- INPUT ON/OFF 130
- INVIMAGE (II) 134
- KEY BEEP 135
- KEY ON/OFF 136
- KEY ON/OFF, cont 137
- KEYBMAP$ 138
- KEYBMAP$, cont 139
- LAYOUT, cont 143
- LAYOUT END 145
- LAYOUT INPUT 146
- LAYOUT RUN 147
- LBLCOND, cont 149
- LED ON/OFF 150
- LINE INPUT 154
- LINE INPUT# 155
- LISTPFSVAR 157
- LTS& ON/OFF 162
- MAKEASSOC 164
- MAP, cont 166
- NAME DATE$ 169
- NAME WEEKDAY$ 170
- NASC, cont 172
- NORIMAGE (NI) 175
- ON BREAK GOSUB 176
- ON COMSET GOSUB 177
- ON COMSET GOSUB, cont 178
- ON ERROR GOTO 179
- ON GOSUB 180
- ON HTTP GOTO 182
- ON KEY GOSUB 183
- ON KEY GOSUB, cont 184
- ON/OFF LINE 186
- OPEN, cont 188
- OPTIMIZE BATCH ON/OFF 189
- PORTOUT ON/OFF 191
- PRBAR (PB) 192
- PRBOX (PX) 193
- PRBOX, cont 194
- PRIMAGE (PM) 200
- PRINT (?) 201
- PRINT KEY ON/OFF 202
- PRINTFEED (PF) 204
- PRINTFEED (PF), cont 205
- PRINTONE 206
- PRINTONE# 207
- PRLINE (PL) 208
- PRPOS (PP) 209
- PRPOS (PP), cont 210
- PRSTAT, cont 212
- PRTXT (PT) 213
- PRTXT (PT), cont 214
- RANDOMIZE 217
- REDIRECT OUT 220
- REM (') 221
- REMOVE IMAGE 222
- RENDER ON/OFF 223
- SAVE, cont 231
- SET FAULTY DOT 232
- SETASSOC 233
- SETPFSVAR 234
- SETSTDIO 235
- SETSTDIO, cont 236
- SETUP, cont 238
- SETUP GET 240
- SETUP WRITE 241
- SETUP WRITE, cont 242
- SOUND 245
- STOP 248
- STORE IMAGE 249
- STORE INPUT 250
- STORE OFF 251
- SYSVAR, cont 255
- TESTFEED 261
- TIMEADD$ 264
- TIMEDIFF 265
- TRANSFER KERMIT 266
- TRANSFER STATUS 267
- TRANSFER ZMODEM 268
- TRANSFER$ 269
- TRANSFERSET 270
- TRON/TROFF 271
- VERBON/VERBOFF 273
- VERSION$ 274
- WEEKDAY 275
- WEEKDAY$ 276
- WEEKNUMBER 277
- WHILE...WEND 278
- XORMODE ON/OFF 279
- External Commands; ZMODEM 280
- 3. Image Transfer 282
- Image Format 283
- Chapter 3 Image Transfer 286
- UBI10, cont 287
- PRBUF-Protocol 288
- 4. Character Sets 290
- Roman 8 Character Set NASC 1 291
- French Character Set NASC 33 292
- Chapter 4 Character Sets 293
- German Character Set NASC 49 298
- PCMAP Character Set NASC -1 301
- ANSI Character Set NASC -2 302
- MS-DOS Latin 1 NASC 850 303
- MS-DOS Greek 1 NASC 851 304
- MS-DOS Latin 2 NASC 852 305
- MS-DOS Cyrillic NASC 855 306
- MS-DOS Turkish NASC 857 307
- Windows Latin 2 NASC 1250 308
- Windows Cyrillic NASC 1251 309
- Windows Latin 1 NASC 1252 310
- Windows Greek NASC 1253 311
- Windows Latin 5 NASC 1254 312
- Windows Baltic Rim NASC 1257 313
- 5. Bar Codes 314
- Standard Bar 315
- Chapter 5 Bar Codes 316
- Chapter 5 Bar Codes 317
- Interleaved 2 of 5 318
- Code 128 319
- Setup Bar Codes 320
- 6. Fonts 321
- Bitmap Fonts 322
- Font Aliases 322
- Printout Samples 323
- OCR-A BT Character Set 324
- Chapter 6 Fonts 325
- 7. Error Messages 327
- Chapter 7 Error Messages 328
- 8. EasyLAN 100i Setup 329
- Sections, Objects 330
- *1-960434-06* 332
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