Relay instructions – Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers User Manual
Page 302
Publication 1785-UM012D-EN-P - July 2005
D-2 Instruction Set Quick Reference
Relay Instructions
Instruction
Description
Examine On
XIC
Examine data table bit I:012/07, which corresponds to terminal
7 of an input module in I/O rack 1, I/O group 2. If this data table
bit is set (1), the instruction is true.
Examine Off
XIO
Examine data table bit I:012/07, which corresponds to terminal
7 of an input module in I/O rack 1, I/O group 2. If this data table
bit is reset (0), the instruction is true.
Output Energize
OTE
If the input conditions preceding this output instruction on the
same rung go true, set (1) bit O:013/01, which corresponds to
terminal 1 of an output module in I/O rack 1, I/O group 3.
Output Latch
OTL
If the input conditions preceding this output instruction on the
same rung go true, set (1) bit O:013/01, which corresponds to
terminal 1 of an output module in I/O rack 1, I/O group 3. This
data table bit remains set even if the rung condition goes false.
Output Unlatch
OTU
If the input conditions preceding this output instruction on the
same rung go true, reset (0) bit O:013/01, which corresponds to
terminal 1 of an output module in I/O rack 1, I/O group 3. This is
necessary to reset a bit that has been latched on.
Immediate Input
IIN
This instruction updates a word of input-image bits before the
next normal input-image update. Address this instruction by
rack and group (RRG). For a local chassis, program scan is
interrupted while the inputs of the addressed I/O group are
scanned; for a remote chassis, program scan is interrupted only
to update the input image with the latest states as found in the
remote I/O buffer.
Immediate Output
IOT
This instruction updates a word of output-image bits before the
next normal output-image update. Address this instruction by
rack and group (RRG). For a local chassis, program scan is
interrupted while the outputs of the addressed I/O group are
updated; for a remote chassis, program scan is interrupted only
to update the remote I/O buffer with the latest states as found
in the output image.
I:012
07
I:012
07
O:013
01
(
)
O:013
01
(
)
L
O:013
01
(
)
U
01
(
)
IIN
01
(
)
IOT