Omron CS1W-HCA12-V1, Руководство по эксплуатации

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Section 6-2
Read-only Words in DM Area
Reading is possible for these words using instructions, but writing is not possi-
ble. Using a Programming Device, both reading and writing are possible. Use
this area for storing data that must not be changed.
Note Writing is not possible when bits 00 to 03 in DM 6600 are set to 1 Hex (writing
to user memory disabled).
Unit Setup Area
This area is used for making settings for the Customizable Counter Unit’s
functions.
Note Writing is not possible when bits 00 to 03 in DM 6600 are set to 1 Hex (writing
to user memory disabled). (Except for bits 00 to 03 in DM 6600.)
6-2-8 EM Area
This area is used in word units (EM 0000 to EM 2047). The EM Area is con-
tained in I/O memory (i.e., memory that can be freely read and written to from
the ladder program). It is possible to specify whether or not EM Area settings
are cleared at power interruptions. This setting is made in bits 12 to 15 of DM
6600 in the Unit Setup Area as shown below.
Area Addresses Instructions Programming Device
Reading Writing Reading Writing
Read-only portion of DM Area (for
general-purpose data) DM 6200 to
DM 6599 OK NO OK OK (See note.)
Area Address Instructions Programming Device
Reading Writing Reading Writing
Unit Setup Area DM 6600 to DM 6655 OK NO OK OK (See note.)
Address Bits Function Contents
DM 6600 12 to 15 Hold function for EM Area
(EM 0000 to EM 2047) 0 Hex: Cleared
1 Hex: Held
Note: Set to 0 Hex to clear the EM Area and
subsequently reduce the execution time for
instructions that access (i.e., read/write) this
area.