Link System Flags And Control Bits - Omron SYSMAC C2000H Operation Manual

SR Area
Word(s) Bit(s)
253 00 to 07
08
09
10
11
12
13
14
15
254 00
01
02 to 06
07
08 to 12
13 to 15
255 00
01
02
03
04
05
06
07
3-4-1

Link System Flags and Control Bits

Remote I/O Systems
Bit 00 - Error Check Bit
Bits 01 and 02
Bit 03 - Remote I/O Error
Flag
24
FAL number output area.
Low Battery Flag
Cycle Time Error Flag
I/O Verification Error Flag
Rack-mounting Host Link Unit Level 0 Error Flag
Remote I/O Error Flag
Normally ON Flag
Normally OFF Flag
First Cycle
1-minute clock pulse bit
0.02-second clock pulse bit
Reserved for function expansion. Do not use.
Step Flag
Duplex System flags
Reserved for function expansion. Do not use.
0.1-second clock pulse bit
0.2-second clock pulse bit
1.0-second clock pulse bit
Instruction Execution Error (ER) Flag
Carry (CY) Flag
Greater Than (GR) Flag
Equals (EQ) Flag
Less Than (LE) Flag
Use of the following SR bits depends on the configuration of any Link Sys-
tems to which your PC belongs. These flags and control bits are used when
Link Units, such as PC Link Units, SYSMAC LINK Units, Remote I/O Units,
SYSMAC NET Link Units, or Host Link Units, are mounted to the PC Racks
or to the CPU. For additional information, consult the System Manual for the
particular Units involved.
The following bits can be employed as work bits when the PC does not be-
long to the Link System associated with them.
Word 251 is used to indicate errors in Remote I/O Systems. The function of
each bit is described below. Refer to Optical and Wired Remote I/O System
Manuals for details.
If there are errors in more than one Remote I/O Unit, word 251 will error in-
formation for only the first one. Data for the remaining Units will be stored in
memory and can be accessed by turning the Error Check bit ON and OFF.
Be sure to record data for the first error, which will be cleared when data for
the next error is displayed.
Not used.
Bit 03 turns ON when an error has occurred in a Remote I/O Unit.
Function
Section 3-4