&
16550 263
60-Hz noise 133
74HCT logic 49
74HCT541 58
75ALS180B 130
A7 Engineering, Inc. 153
abstract control management functional
descriptor 349 , 352
abstract control model 337 , 339
virtual COM ports and 340 – 362
AC termination 123 – 125
adapters
RS-232 63 – 65
See also converters
address
COM port 36 – 37
network 272 – 280
alarm wire. See twisted-pair cable
analog ground 71
analyzers 78
ANSI encoding 21
Application Settings, .NET 186 – 188
ASCII Hex 22 – 23
ASCIIEncoding 173 – 176
asserted, defined 47
asynchronous protocol, defined 11
AT commands 24 , 336
USB virtual COM port and 341 , 344
AT89C5131 341
ATM networking control model 337
Atmel Corporation 341
autodetecting the bit rate 17 – 18
6
B&B Electronics Manufacturing Company
63 , 89
back termination 122
BACnet 270
balanced line 80 – 83
Basic language (embedded). See code example
(embedded); PICBASIC Pro
Basic language (PC). See Visual Basic
Basic Stamp 14 , 54
baud rate 13
See also bit rate
BAUDCON 234 – 235 , 236 , 242
biasing, RS-485 127 – 131
BinaryReader and BinaryWriter 177 – 182
bInterval 353
bit rate
autodetecting 17 – 18
defined 13
setting (.NET) 221 – 223
setting (PIC18F4520) 234 – 237
transmission line effects and 107
BITBUS 271
Bluetooth 153
bmRequestType 321
Break signal 46 , 210 , 233
breakout box 76 – 77
BreakState 210
bRequest 321
bridge chip, USB to UART 325
buffers 27 – 28
bus topology 125
multiple RS-485 buses 141 – 143