
!
!
!
5
Application Precautions
xv
•
Do not touch the Expansion I/O Unit Connecting Cable while the power is
being supplied in order to prevent any malfunction due to static electricity.
Caution
Always clear memory before beginning to program the CPM1. Although
memory is cleared before the CPU Unit is shipped (except for bits with specific
functions), AR 1314, which turns ON when the internal capacitor cannot back up
memory, may have turned ON during shipment.
Caution
If the CPM1 will be turned off for periods exceeding the data backup period of the
internal capacitor, design the system so that it will not be influenced if data in the
DM, HR, and CNT areas is cleared when power is turned off.
Caution
Either switch the CPM1 to RUN or MONITOR mode, or turn off and on power to
the CPM1 after changing from a Programming Device any data that is backed up
in flash memory. This data includes the user program, read-only DM area (DM
6144 to DM 6599), and the PC Setup (DM 6600 to DM 6655).
•
The user program and memory area data in the CPM1 are backed up either by
an internal capacitor or in flash memory as shown in the following table.
Backup method
Data
Internal capacitor
Read/write DM area (DM 0000 to DM 0999, DM 1022, and
DM 1023)
Error log area (DM 1000 to DM 1021)
HR area (HR 00 to HR 19)
Counter area (CNT 000 to CNT 127)
Flash memory
User program
Read-only DM area (DM 6144 to DM 6599)
PC Setup (DM 6600 to DM 6655)
Note
1. The IR, TR, LR, and timer areas are not normally backed up when power is
turned off and all contents will be cleared the next time power is turned on.
(The PC Setup setting in DM 6601 can be used to back up this data. Refer to
details on the PC Setup later in this manual for details.)
2. The bits in the AR and SR areas have special functions and are set accord-
ing to these functions when power is turned on.
•
The capacitor backup time depends on the ambient temperature, as shown in
the following graph. The backup time, however, assumes that the capacitor is
fully charged, which requires that power be supplied to the CPU Unit continu-
ously for at least 15 minutes.
Backup time (days)
Ambient temperature (
_
C)
20
10
7
1
25
40
80
Summary of Contents for SYSMAC CPM1
Page 1: ...Cat No W262 E1 4 Programmable Controllers SYSMAC CPM1 OPERATION MANUAL ...
Page 2: ...CPM1 Programmable Controllers Operation Manual Revised February 1998 ...
Page 116: ...105 Appendix B Dimensions All dimensions are in millimeters CPM1 10CDR j 121 130 85 81 90 ...
Page 118: ...Appendix B Dimensions 107 CPM1 20EDR 81 90 171 180 85 ...
Page 119: ...Appendix B Dimensions 108 CPM1 CIF01 90 81 21 30 205 50 56 CPM1 CIF11 90 81 21 30 205 50 61 ...