Allen-Bradley MicroLogix 1400 - Page 680

Publication 1766-RM001A-EN-P - October 2008
678 Index
DF1 radio modem parameters 606
DH485 parameters 589
Modbus RTU Master parameters 614
Modbus RTU Slave parameters 615, 616
clear instruction 206
clearing
controller faults
577
controller memory 51
clock, free running 562
CLR instruction 206
common techniques used in this manual 13
communication instructions 393
communication protocols
DF1 full-duplex
592
DF1 half-duplex 593
DH485 588
Modbus Slave RTU 611
communication scan 668
communications
active status bit
570
channel 0 status 569
mode selection status bit 570
status file 63, 80
compare instructions 189
compiler revision
build number status
575
release status 575
contacting Rockwell Automation for assistance 585
control profile 668
control program 668
control register error status bit 563
controller
definition
668
fault messages 578
mode 558
mode status 554
overhead 668
status file 551
controller properties 44
conversion instructions 243
convert from binary coded decimal (BCD) instruction 246
convert to binary coded decimal (BCD) instruction 250
COP instruction 269
copy file instruction 269
copy word instruction 268
count down instruction 185
count up instruction 185
counters
counter file
182
counter file and status bits 183
definition 668
how counters work 182
CPU (central processing unit), definition 668
CPW instruction 268
CS function file 63, 80
CTD instruction 185
CTU instruction 185
D
data file download protection 47
data file overwrite protection lost status bit 571
data files 40, 45
bit (B) 45
control (R) 45
counter (C) 182
floating point (F) 45, 201
I/O images for expansion modules (MicroLogix 1200) 18
input (I) 45
input and output addressing examples 27
integer (N) 45
long word (L) 45
message (MG) file 399
organization and addressing 364
output (O) 45
PID (PD) 331
programmable limit switch (PLS) 132
protecting data files 47
status (S) file 551
string (ST) file 364
timer (T) 175
data logging 518, 526
Quick Start example 650
data table 668
DCD instruction 244
decode 4 to 1-of-16 instruction 244
DF1 full-duplex protocol 592
configuration parameters 592
description 592
DF1 half-duplex protocol 593
configuration parameters 599, 603
description 593
DH485 communication protocol 588
configuration parameters 589
DH485 network
configuration parameters
589
description 588
protocol 588
token rotation 588
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