Omron CS1W-MCH71 Operation Manual page 450

Allocations for the CPU Unit
Note
Note
03: DM area (custom address)
Specifies DM area of PLC starting from the specified first address
(m+3).
04: EM area (custom word)
Specifies EM area of PLC starting from the specified first address
(m+3).
When EM area (04) is specified for the operation data area in area type
specification (word m+2), EM area is fixed at Bank No.0.
Do not set the bank No. of the file memory on PLC. Specifying EM area of the
file memory bank No. causes the alarm [0044h: CPU memory error].
When mounting several MC Units on the same PLC, make sure that operation
data areas do not overlap. Since MC Units do not detect the error even if cus-
tom data areas of different Units are overlapping in PLC, a malfunction may
result.
For details on bank and file memory for the EM Area, refer to the SYSMAC
CS Series Programmable Controllers Operation Manual (W339) or the SYS-
MAC CJ Series Programmable Controllers Operation Manual (W393).
• First address (word m+3)
When CIO (0001), WR (0002), DM (0003), or EM area (0004) is specified
for the operation data area in the area type specification (word m+2), the
first address is to be specified.
Set the first address in hexadecimal (Hex). The setting ranges are as fol-
lows:
CIO area: 0000 to 177F Hex (0 to 6015)
WR area: 0000 to 017F Hex (0 to 383)
DM area: 0000 to 7F7F Hex (0 to 32639)
EM area: 0000 to 7F7F Hex (0 to 32639)
When "Does not use the custom data area (0000)" is specified in the area
type specification (word m+2), this setting is not necessary.
Setting example
m+2 0003
m+3 7530
The custom data area is allocated, as shown below, starting from word
7530Hex (30000) of DM area in PLC.
Control data
Axis 01
30000
Axis 02
30001
. .
. .
. .
Axis 31
30030
Axis 32
30031
Custom data area is allocated for 32 axes starting from the specified first
address regardless of the setting of the axis parameter [P1AA01: Physical
axis setting].
However, in the addresses corresponding to the axes that are set to "Not
used" in the axis parameter [P1AA01: Physical axis setting], data is not trans-
ferred between CPU Unit and MC Unit.
Status data
30032 to 30034
30035 to 30037
.
.
.
30122 to 30124
30125 to 30127
Section 7-3
405