Precautions In Using C200H Special I/O Units - Omron SYSMAC CS Series Operation Manual

Precautions in Using C200H Special I/O Units

Content After Mode Change or Power Interruption
Area
CIO I/O Area
Area
C200H DeviceNet Words
PLC Link Words
Data Link Area
CPU Bus Units
Special I/O Unit Area
Inner Board Area
SYSMAC BUS Area
I/O Terminal Area
CS-series DeviceNet Area
Internal I/O Area
Work Area (W)
Holding Area (H)
Auxiliary Area (A)
Data Memory Area (D)
Extended Data Memory Area (E)
Timer Completion Flags (T)
Timer PVs (T)
Counter Completion Flags (C)
Counter PVs (C)
Task Flags (TK)
Index Registers (IR)
Data Registers (DR)
9-3

Precautions in Using C200H Special I/O Units

Memory Areas
414
Mode Changed
IOM Hold
Bit OFF
Cleared
Cleared
Retained
Status varies from address to address.
Retained
Retained
Cleared
Cleared
Retained
Retained
Cleared
Cleared
Cleared
Note 1. Mode changed from PROGRAM to RUN/MONITOR or vice-versa.
2. The PLC Setup's "IOM Hold Bit Status at Startup" setting determines
whether the IOM Hold Bit's status is held or cleared when the PLC is turned
on.
Observe the following precautions when using C200H Special I/O Units.
There are differences between the words allocated to Special I/O Units in the
PLC memory areas, as shown in the following table.
PLC
IR/CIO IR 100 to IR 199
Area
allocations
DM Area DM 1000 to DM 1999
allocations
1
IOM Hold Bit Cleared
IOM Hold IOM Hold
Bit ON Bit OFF
Retained Cleared
Retained Cleared
Retained Retained
Retained Retained
Retained Retained
Retained Cleared
Retained Cleared
Retained Retained
Retained Retained
Cleared Cleared
Retained Cleared
Retained Cleared
C200H/C200HS C200HX/HG/HE
IR 100 to IR 199
IR 400 to IR 459
DM 1000 to DM 1999
DM 2000 to DM 2599
Section 9-3
PLC Power OFF to ON
2
IOM Hold Bit Held
IOM Hold IOM Hold
Bit ON Bit OFF
Cleared Cleared
Cleared Cleared
Retained Retained
Retained Retained
Retained Retained
Cleared Cleared
Cleared Cleared
Retained Retained
Retained Retained
Cleared Cleared
Cleared Cleared
Cleared Cleared
CS Series
CIO 2000 to CIO 2959
(allocated CIO 2000 to
CIO 2159 for unit
numbers 0 up to 15)
D20000 to D29599
(allocated D20000 to
D21599 for unit num-
bers 0 up to 15)
2
IOM Hold
Bit ON
Retained
Retained
Retained
Retained
Retained
Retained
Retained
Retained
Retained
Cleared
Cleared
Cleared