143
Index
A
AC Adapter, 5
assembly tool, 112
Auxiliary Area, 117
reading contents of Auxiliary Area words, 76
writing to Auxiliary Area words, 79
B
Backplane, 27
baud rate, 8, 116
bits, controlling
cancelling forced-set and forced-reset bits, 93
forced-resetting, 92
forced-setting, 92
block
command block, 53
command block format, 53
dividing command blocks into frames, 54
C
C-mode commands, 52
response codes, 103
C-series commands. See C-mode commands
cable lengths, 7
for a direct RS-232C connection, 28
in RS-422 communications, 7
cables, 110
All Plastic Optical-Fiber: APF, 111
hood assembly, 44
Plastic-clad Optical-Fiber: PCF, 110
RS-422 communications, 41
wiring, 42
character format. See communications parameters
CIO Area
reading contents of CIO Area words, 73
writing to CIO Area words, 77
CMND(194), 57, 63
C-mode commands
ABORT, 98
AUXILIARY AREA READ, 76
AUXILIARY AREA WRITE, 79
CIO AREA READ, 73
CIO AREA WRITE, 77
DM AREA READ, 75, 76
DM AREA WRITE, 79
ERROR READ, 91
FORCED RESET, 92
FORCED SET, 92
FORCED SET/RESET CANCEL, 93
HOLDING AREA READ, 74
HOLDING AREA WRITE, 78
I/O REGISTER, 95
I/O TABLE GENERATE, 95
INITIALIZE, 98
LINK AREA READ, 73
LINK AREA WRITE, 77
list, 72
PC MODEL READ, 94
PROGRAM READ, 94
PROGRAM WRITE, 95
PV READ, 74
PV WRITE, 78
response codes, for an undefined command, 98
STATUS READ, 89
STATUS WRITE, 90
SV CHANGE 1, 84
SV CHANGE 2, 85
SV CHANGE 3, 87
SV READ, 80
SV READ 2, 81
SV READ 3, 83
TC STATUS READ, 75
TEST, 94
commands
C-mode, 52
PC instructions, 57
sending to host computer, 3, 57
communications
form, 2
general description, 2
parameters, 12, 13
testing, 48, 49, 94
timing, 64
communications method, 8, 116
communications protocol, 53
See also communications parameters
components, Host Link Unit, 14
connection examples
1-to-1, 35
1-to-N, 40
connections
connecting to shield, 42
not connecting to shield, 42
connector pins
RS-232C, 28
RS-422, 31
soldering, 43
connectors, 110
control system, configuration, 5
counters
changing PV, 78
changing SV, 84, 85, 87
reading Completion Flag status, 75
reading PV, 74
reading SV, 80, 81, 83