Omron CVM1D Operation Manual page 46

CPU Bus Link Area
PC Status Area
Calendar/Clock Area
Data Link Area
40
The following table shows the specific functions of flags and control bits in the
PC Status Area, G000.
G000
bit(s)
00 ON when the PC is in PROGRAM mode.
01 ON when the PC is in DEBUG mode.
02 ON when the PC is in MONITOR mode.
03 ON when the PC is in RUN mode.
04 ON when the program is being executed (RUN or MONITOR mode).
05 Not used.
06 ON when a non-fatal error has occured. (PC operation continues.)
07 ON when a fatal error has occured. (PC stops.)
08 SPL/DPL Mode Flag
09 Active CPU Unit Flag
10 Not used.
11 UM Protect Bit. Prevents both reading out and writing to Program
Memory when turned ON. Set with the SSS.
12 Memory Card Protect Bit. Prevents writing to Memory Cards when
turned ON. Set with the Memory Card Protect Switch.
13 and 14 Not used.
15 UM Protect Bit. Prevents writing to Program Memory when turned ON.
Set with the System Protect Key Switch.
The following table shows the function of bits in the Calendar/Clock Area, G001
to G004. The clock is set with the SSS. Refer to the SSS Operation Manuals for
more details.
Word Bits
G001 00 to 07 Seconds
08 to 15 Minutes
G002 00 to 07 Hours
08 to 15 Day of month 01 to 31 (adjusted by month and for leap year)
G003 00 to 07 Month
08 to 15 Year
G004 00 to 07 Day of week
Note The accuracy of the internal clock depends on the ambient temperature. Refer
to the following table.
Ambient temperature
55_C
25_C
0_C
The CPU Bus Link Area is disabled by default in the PC Setup and must be en-
abled with the SSS in order to use the Data Link Area.
Function
OFF when operating in duplex mode
ON when operating in simplex mode
OFF when the CPU Unit on the left is active.
ON when the CPU Unit on the right is active.
Contents
00 to 59
00 to 59
00 to 23 (24-hour system)
1 to 12
00 to 99 (Rightmost two digits of year)
00 to 06 (00: Sun.; 01: Mon.; 02: Tues.;
03: Wed.; 04: Thurs.; 05: Fri.; 06: Sat.)
Error per month
–3 to 0 min
±1 min
–2 to 0 min
Section 3-5
Possible values