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3 Memory Allocations
CJ-series EtherCAT Slave Units Operation Manual (W541)
3-3 DM Area Allocations
3
3-3-2 Details of the Allocated DM Area Words
m + 10 08 to 15 IN data area type Unit 00 hex The area type code in use is indi-
cated.
• 00 hex: not used
• 01 hex: CIO Area (CIO)
• 03 hex: Data Memory (DM)
• 04 hex: Work Area (WR)
• 05 hex: Holding Relay Area
(HR)
• 08 to 14 hex: Expansion Mem-
ory (EM) bank 0 to C
*1
08 to 15 Reserved --- --- Reserved by system
m + 11 00 to 15 First word in IN
data area
Unit 0000 hex The starting word of the IN data
area in use is indicated. The
ranges vary by IN data area
type.
• CIO: 0000 to 17FF hex
• DM: 0000 to 7FFF hex
• WR: 0000 to 01FF hex
• HR: 0000 to 01FF hex
• EM: 0000 to 7FFF hex
*1
m + 12 00 to 15 IN data area size Unit 0000 hex The IN data area size in use is
indicated. The value is in bytes
from one of the following.
• 00 hex: 0 byte
• 32 hex: 50 byte
• 64 hex: 100 byte
• C8 hex: 200 byte
• 190 hex: 400 byte
*1. EM areas are not available for all CJ-series CPU Units. Refer to the operation manuals of the CPU Units for
details on the EM memory area specification.
Word Bit Name Manipulated by Default value Function
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