Delta RMC101 User Manual Page 286

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RMC100 and RMCWin User Manual
5-36
This technical brief will compare the four discrete I/O interfaces of the RMC100 series product-
line, describe implementing Parallel Position Mode, and finally provide a sample application using
Parallel Position Mode.
DI/O Communication Mode Comparison
The following chart lists the advantages and disadvantages of each communication mode. Each
word or phrase in bold print appears in RMCWins online help index.
Interface
Mode
Advantages
Disadvantages
Parallel
Position
Mode
Any position can be
moved to in a single
PLC scan
Any open loop drive can
be triggered in a single
PLC scan
Multiple profiles can be
selected for any move
Requires a PLC
Returns only a Halted
Bitindicating an error
has occurredand an In
Position Bit per axis
Issues only Go and
Open Loop commands
Gives commands to only
one axis per scan
Is limited in number of
speed/acceleration
profiles
Parallel
Event Mode
Up to four axes may be
commanded at once
PLC or thumb-wheel
switches may be used
Allows use of Event
Control feature
Requires parallel inputs
Returns only a Halted
Bitindicating an error
has occurredand an In
Position Bit per axis
Sequence must be pre-
programmed in Event
Control
Command
Mode
Any RMC command can
be issued
Any status information
can be retrieved
(including Actual
Position, Actual Speed,
Drive, Error Bits, and
other Status Bits)
Requires a PLC
Requires 2 PLC scans
per command
Gives commands to only
one axis per command
cycle
Input to
Event Mode
Does not require a PLC
Multiple axes may be
given commands from a
single input
Allows use of Event
Control feature
Returns only a Halted
Bitindicating an error
has occurredand an In
Position Bit per axis
Issues only Start Event
commands
Implementation
The following diagram shows the electrical control connections of a single-axis hydraulic system
using RMC-DI/O in Parallel Position Mode (the PC and its RS232 cable are needed only during
setup):
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