User`s manual

90 Index
M (continued)
Multiplexer Module
block diagram
, 13
card numbers, 14
changing channels, 82
channel, 11–13
address, 16
connections, 11–13
channels, 11
command reference, 47–72
configuring, 19–30
description, 11
error messages, 85
error numbers, 85
initial operation, 17
programming, 14
reading registers, 81
register definitions, 83
register types, 81
registers, 83
resetting, 82
selecting channels, 14
specifications, 73–74
understanding, 41–46
using, 31–40
with HP command module, 24
with HP mainframe, 24
writing to registers, 82
N
Numeric Command Parameters, 49
O
*OPC, 71
*OPC?, 71
Opening
channels
, 33, 59
multiple channels, 33
order for multiple channels, 33
Operation Status Register, 46, 63
bit value, 64
setting bit 8, 64
Optional
command parameters
, 49
commands, 16, 48
OUTPut Subsystem, 57
OUTPut[:STATe], 57
OUTPut[:STATe]?, 57
P
Parameters, 49
Pinout, 29
Port
Event In
, 41
scanning using, 45
external trigger, 44–45
Trig Out, 36, 44
enabling, 41, 57
query state, 57
scanning using, 45
shared by switchboxes, 57
voltmeter complete, 45
Program Examples
closing channels
, 17
measure voltage by scanning, 36
resetting the switchbox, 17
scan complete interrupt, 46
scanning using event in port, 45
scanning using trig out port, 45
scanning with external devices, 44, 60–61
Programming the Multiplexer Module, 14
Protection Resistors, 13
Q
Query
error queue
, 67
open/closed channels, 33, 59–60
scanning
cycles
, 52
mode state, 62
states, 56
trig out port, 57
trigger sources, 70
R
*RCL, 71
Reading
channel registers
, 81
device type registers, 81
ID registers, 81
registers, 81
status/control registers, 81
tree switch registers, 81
READIO, 79–80